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Appeared on: Friday, March 05, 2004
Mitsumi DW-7872TE


1. Package - Installation

Mitsumi DW-7872TE DVD±RW recorder - Page 1

The availability of dual DVD recorders is continuously increasing. One more drive has been added to the market, the Mitsumi's DW-7872TE. Since in the market are already available the 8x dual DVD recorders, we estimate that Mitsumi delayed more than we expected to reveal a new model. We have it on good authority, that Mitsumi is considering withdrawing from the optical drive market.

The drive is capable of 8x DVD+R, 4x DVD-R recording and 4x DVD+RW, 2x DVD-RW rewriting. With CD media, the unit allows recording up to 40x and 24x with recordable and rewritable media respectively. As a reader it supports 12x for DVD-ROM, 8x for DVD±RW and 40x for CD.

Features

The Mitsumi DW-7872TE recorder uses the Exac-Link feature to prevent buffer under-run errors.

Specifications
Type: DW 7872 TE
Interface: ATAPI with UltraDMA 33
Supported media for writing: DVD+R, DVD-R, DVD+RW, DVD-RW, CD-R, CD-RW
Writing speed: DVD+R 8x, DVD-R 4x, DVD+RW 4x, DVD-RW 2x, CD-R 40x, CD-RW 24x
Reading speed: DVD-ROM/DVD-R/DVD-RW/DVD+R/DVD+RW max. 12x, CD-ROM/CD-R/CD-RW max. 40x
Recording capacity: DVD+RW/DVD-RW/DVD+R/DVD-R 4.7GB, CD-R/CD-RW 650MB, 700MB
Access time: CD 120ms, DVD 140ms
Burst transfer rate: PIO Mode 4 / Ultra DMA 33
Buffer memory: 2MB
Audio: digital out and line out at back site (MPC compatible)
Writing mode: TAO (Track-At-Once) with zero gap, variable or fixed packet, multisession, DAO (Disc-At-Once), SAO (Session-At-Once), Multi-Track Reservation
Supported formats: DVD Video, DVD-ROM, DVD+RW, DVD-RW, DVD+R, DVD-R, CD-ROM, CD-ROM XA, CD-Text, VideoCD, CD-I, DVD SS-SL, DVD SS-DL-OPT, DVD SS-DL-PTP, DVD DS-SL, DVD DS-DL,
DVD DS-DL-OPT, DVD DS-DL-PTP, CD-Extra, CD-Audio, Photo-CD (single-/multisession), CD-RW, CD-R, CD-I Ready
Disc diameter: 120mm or 80mm
Mounting method: Horizontal/vertical
Compatibility: MPC Level 3, MultiRead, PC 2001
Supported OS: Windows ME®/2000®/XP®
Weight: 1kg
Dimensions: 42 mm x 148 mm x 194 mm (W x H x D)
Characteristics: Buffer underrun prevention, dust protected enclosure, emergency eject

The drive uses a 2MB buffer memory store and supports RAW DAO 96 writing (CD). Thus the drive does not support Mount Rainier, nor does it read or write DVD-RAM media.

The drive uses the RPC II region control, allowing a user to change the drive's region at most 5 times. For our tests, we set the region code to 2 (Europe).

- The drive

The european retail package includes a quick start guide and a software CD with Nero 6. The IDE cable, audio cable and mounting screws are also included.

The drive's front panel is colored light gray. On the tray we can see a dual DVD logo and the supported recording speed. Below there are placed, from left to right, the power led, the DVD-RW, DVD+RW and CD-RW logos and the eject button. Also there is an emergency eject hole, above the button.

On the rear panel there are the analogue and digital audio outputs (SPDIF), the IDE connector and the power input.

Removing the screws and opening the drive's cover voids the drive's warranty. For reference reasons, we post the following pictures. Click on the photos for an enlarged view.

The main chipset is manufactured by Mediatek and it is the same with most 8x recorders coming from Teac, LiteOn etc.

- Installation

The Mitsumi DW-7872TE was connected to our test PC and was identified as "MITSUMI DW-7872TE" under WinXP. All tests were done with firmware revision v0054.

The following pages include the test results for the Mitsumi DW-7872TE drive in comparison with the Teac DV-W58G and Sony DRU-530A, since all drives are capable of 8x DVD recording.


2. Data CD Reading Tests

Mitsumi DW-7872TE DVD±RW recorder - Page 2

Data CD Reading Tests

- Pressed CD results (Click for CDSpeed results)

In the graph above, we can see that the drive was the fastest among the two other, while managed to confirm the manufacturer's specifications. The difference of 2x is not negligible.

The reported seek times for the Mitsumi drive were quite good for all modes. However the drive was behind Sony and Teac.
- CD-R results (Click for CDSpeed results)

We made a copy of the previous, pressed CD in order to test the drive's behavior with a CD-R media. As in the previous test the Mitsumi drive was the fastest.

This time Mitsumi was better than Teac, in comparison with the previous test. Sony had again the better seek times.

- ReWritable Media (Click for CDSpeed results)

For the reading test we used 24x High Speed rewritable media from Mitsubishi Chemicals.

In this test Mitsumi had the second fast speed, behind Sony, due to the supported 32x reading for rewritable media.


3. CD Error Correction Tests

Mitsumi DW-7872TE DVD±RW recorder - Page 3

Error Correction Tests

In the following tests we check the drive's behavior when reading scratched / defective audio discs. The test discs used were the ABEX series from ALMEDIO.

- ABEX TCD-721R

Errors total
Num: 872559
Errors (Loudness) dB(A)
Num: 47573 Avg: -73.9 dB(A) Max: -36.0 dB(A)
Error Muting Samples
Num: 2776 Avg: 1.0 Samples Max: 11 Samples
Skips Samples
Num: 0 Avg: 0.0 Samples Max: 0 Samples
Total Test Result
77.0 points (out of 100.0 maximum)

The performance with this disc was very good. Although the total error count was high, the maximum loudness error level at -36.0dB is very good. No samples were skipped. The final score of 77.0 is good.

- ABEX TCD-726

Errors total
Num: 11517940
Errors (Loudness) dB(A)
Num: 101873 Avg: -36.1 dB(A) Max: -1.9 dB(A)
Error Muting Samples
Num: 117391 Avg: 28.7 Samples Max: 2705 Samples
Skips Samples
Num: 2905 Avg: 118.6 Samples Max: 2898 Samples
Total Test Result
44.4 points (out of 100.0 maximum)

The Abex TCD-726 test disc is much easier for drives in general to read. However the Mitsumi drive reported poor performance. The total error count was extremely high, while there were several skips and mutes. That's why we post for both test discs the CDSpeed reading graph. As we can see below, in the CDSpeed graph, DW-7872TE find it difficult to read the contents of the 726 disc.

- CD-Check Audio Test Disc

The CD-Check Test Disc is a very useful tool for evaluating the Sound Reproduction / Error correction capabilities of a CD player. The disc offers a signal combination with disc error patterns to rate the drive's abilities to read music and reproduce it completely. Five tracks on the disc contain a sequence of progressively more difficult tests. These tracks are referred to as Check Level-1 through Check Level-5.

The tracks are reproduced (played) through a software multimedia player (i.e. Windows Media Player). Each level is considered as passed, if the tone coming out from the speakers is smooth, continuous without interruptions, skipping or looping. The higher the Check Level passed, the more reliable the sound reproduction of the tested drive.

Error Level
1
2
3
4
5
Mitsumi DW-7872TE
5/5
5/5
5/5
5/5
0/5

The drive successfully passed the four first out of the five check levels for this test. This is a good performance since the fifth level, which includes artificial scratches of 1.5mm, is difficult for most drives to be read.

- Summary

Test Disc
Reading Speed
Score
ABEX TCD-721R
Max
77.0
ABEX TCD-726
44.4
Average Score
60.7

The Mitsumi DW-7872TE managed an average score of 60.7 out of 100. This is a very low score and it is a resultant of the low 44.4 score of the 726 test disc.


4. DVD reading tests

Mitsumi DW-7872TE DVD±RW recorder - Page 4

DVD reading tests

- Single Layer DVD-ROM (Click for CDSpeed results)

Mitsumi and Teac reported similar performance, while Sony was the slowest. The difference between the first two is negligible.

Mitsumi had the higher seek times among the other two drives. Although the reported seek times was not the worst we ever seen, we would like to be lower.

- Dual Layer PTP DVD-ROM (Click for CDSpeed results)

The two layers of a PTP DVD-ROM disc are read sequentially with the drive starting the read process from the inner tracks on the disc, which is the beginning of each layer, and progressing outwards towards to the outer tracks for each layer.

In this test DW-7872TE had the lower speed. However the difference was unconsidered.

Once again the seek times were increased for the Mitsumi drive. Teac was the best, in this test.

- Dual Layer OTP DVD-ROM

The first layer of an OTP dual layer DVD-ROM is read exactly the same way as the first layer of the PTP disc we tested previously. The difference here is the reading strategy of the second layer on the disc. The beginning of the second layer is located in the outer part of the disc, so the drive starts reading from the outer tracks inwards towards the inner tracks of the disc.

 

As it can been seen in the following screenshot the OTP dual layer DVD test disc had the same speed as the PTP one. The seek times are about in the same levels.

- DVD Ripping Tests

We measured the DVD-Video ripping speed of the Mitsumi DW-7872TE using the latest version of DVD Decrypter. The DVD Video title is the "Matrix" pressed DVD-Video.

Sony drive was the fastest while Mitsumi was the slowest. However the reported 7165 kb/s is a good transfer rate.

- DVD Recordable / Rewritable reading Tests

The chart below shows the Nero CDSpeed average reading speed results with the following media:

We would like the Mitsumi drive to be faster in RW reading. We estimate that the reported speeds are very low.


5. DVD Error Correction Tests

Mitsumi DW-7872TE DVD±RW recorder - Page 5

DVD Error Correction Tests

In the following tests we examined the DVD reading capabilities of the Mitsumi DW-7872TE drive with scratched / defective DVD media. For the tests we used CDVD Benchmark and Nero CDSpeed. The reference test media come from ALMEDIO.

- Single Layer media
ABEX TDR-821

This is a single sided, single layer DVD-ROM with a 4.7GB capacity, and its surface has an artificial scratch of dimensions varying from 0.4 to 3.0 mm. The following transfer rate picture comes from the CDVD Benchmark v1.21 transfer rate test.

The drive read the contents of the 821 test disc without reporting any reading error. There were no speed deviations while reading the defective areas on the disc's surface.

ABEX TDR-825

This is also a single sided, single layer DVD-ROM of 4.7GB capacity. The data structure of the disc is exactly the same as that of the TDR-821, with the difference that there are no scratches on the surface and instead defective areas ranging in dimensions from 0.5 to 1.1 mm. There are also fingerprints with height between 65 and 75 micrometers.

The drive managed to read without particular problems the defective area on the disc. However there were some instant speed drops.

- Dual Layer media
ABEX TDR-841

This is an 8.5GB dual layer, single sided DVD-ROM disc with artificial scratches of dimensions ranging from 0.4 to 3.0mm, on both layers.

Once again the disc was read without reading errors and speed falls, for both layers.

ABEX TDR-845

This disc is a single sided, dual layer DVD-ROM disc with capacity of 8.5GB. The only difference between the TDR-845 and the TDR-841 is that the first includes both defective areas and fingerprints. The dimensions of the defective areas range from 0.5 to 1.1 mm and the fingerprints have height sized from 65 to 75 microns (micrometers).

The test finished successfully without reporting any error.

ABEX TDV-541

The TDV-541 is a single sided, dual layer DVD-VIDEO disc, with a capacity of 8.5GB.The disc is based on the TDV-540 series which is designed for inspection and adjustment of DVD-VIDEO players. The disc checks the layer switch operation from layer 0 to layer 1 and also includes test pictures and test signals for DVD sound files. The current TDV-541 also checks the error correcting capabilities of the drive and includes scratches sized from 0.4 to 3.0 mm.

The drive managed to read the disc without reporting any errors. Some intermittent speed drops didn't affect the reading process.

The drive also had good speed and acceptable seek times for all modes.

 

 

ABEX TDV-545

The TDV-545 disc is based on the TDV-540 series. It is a single sided, dual layer Video/S-2 disc with a capacity of 8.5GB. The TDV-545 includes artificial black dots on the disc's surface, sized from 0.4 to 1.0 mm. It also has 65 - 75 micrometer high fingerprints.

Once again the drive finished the test successfully. No error or speed drop were reported. This disc is not a problem for Mitsumi drive.

 

 

 


6. Protected Disc Tests

Mitsumi DW-7872TE DVD±RW recorder - Page 6

Protected Disc Tests
- Reading Tests

To create an image of the various protected titles onto a hard disk, we used CloneCD v.4.3.2.2 software and the appropriate settings, depending on the protection type of the inserted discs. Below are summarized the capabilities of the Nec drive, according to CloneCD software. As you can see the drive supports writing of CD+G under RAW DAO:

The game titles we used for each protection scheme are given in the table below:

Game Title
Protection Scheme
PSX "NBA Jam Extreme"
Lybcrypt
Serious Sam The Second Encounter v1.07
SafeDisc v.2.60.052
VRally II
SecuROM v.2
PSX Pressed Media

SafeDisc v.2

SecuROM v.2

Nec managed to rip the contents of all test discs successfully. Mitsumi has an acceptable behavior in all tests. Also it was faster than Teac and Sony in all tests, especially with the PSX game.

- Writing Tests

The Mitsumi DW-7872TE supports the DAO-RAW writing mode. For checking the drive's EFM correction status, we used 3 different game titles with different SafeDisc 2 versions with the latest software patches installed. After making the images of the various titles to the hard disk, we burned them (maximum speed) with CloneCD. Two different discs were created for each title; one with the "Amplify Weak Sectors" enabled and one more with the function disabled.

The table below shows the results of the attempted backups and whether they ran (game installed / played normally), or not.

Drive
Game Title
SD2 Build
Settings
Amplify Weak Sectors On
Amplify Weak Sectors Off
Mitsumi DW-7872TE
Max Payne
v2.51.020
Yes
Yes
Serious Sam - The Second Encounter v1.07
v.2.60.052
Yes
Yes
The Sims Unleashed
v.2.8
Yes
Yes
The Sims Superstar
v2.9
Yes
Yes
Fifa 2004
v3.1
Yes
Yes

Teac was able to make playable copies of all games we tested. The most difficult game was Fifa 2004 protected with Safedisc v3.10. In order to test the compatibility of the written media we tested the Fifa 2004 backup disc on the following devices:

Drive
Amplify Weak
Sectors On
Amplify Weak
Sectors Off
Plextor 16x
No
No
Pioneer DVD-500W
Yes
Yes
Memorex DVD+/-RW DUAL XL
No
No
Optorite DD0203
No
No
CyberDRV CW058D
Yes
Yes
Memorex True-8x
No
No
Teac DV-W58G
Yes
Yes
Mitsumi DW-7872TE
No
No
Teac CD-540E
Yes
Yes

The strange thing here is that the backups were not playable in the same drive, meaning the Mitsumi DW-7872TE.


7. DAE Tests

Mitsumi DW-7872TE DVD±RW recorder - Page 7

DAE Tests

- Pressed and CDR AudioCD results

The Mitsumi DW-7872TE uses 40x CAV reading strategy for CD-DA. Below is the resultant output from the CDSpeed transfer rate test with a pressed audio CD:

According to Nero CDSpeed, the average reading speed was 32.25x, while at the end of the reading procedure was at 42.79x. The seek times were good.

 

 

 

We ripped the contents of the same audio disc to our hard disk, using the CDDAE software. The average ripping speed (burst mode) of 29.6x, was acceptable. Teac was the fastest at 35.2x.

The same pressed audio disc was copied onto a CD-R and was read again with CDspeed.

This time Mitsumi was the fastest among the other, at 29.5x.

- Advanced DAE Quality

In the Nero CD Speed Advanced DAE test, the Mitsumi drive returned an average speed of 29.28x, which is good performance, and a quality score of 99.2. According to CDSpeed the drive can read Cd Text and Subchannel Data but not Leadin and Leadout.

- Support of 90/99mins AudioCDs

Mitsumi drive managed to playback both 90min and 99min test discs.

- Reading/Ripping Protected AudioCDs

For the test procedure we used two audio discs with different audio protection schemes. We tested for both recognition and ripping to the hard disk. The software used was Exact Audio Copy.

* Pressed Audio disc protected by Nec Key2Audio (Celine Dion - New Day Has Come)

* Pressed Audio disc protected by Cactus Data Shield 200 (Natalie Imbruglia - White Lilies sIsland)

Key2Audio
CDS200
EAC
Mitsumi DW-7872TE
OK
Recognize the disc but cannot rip or play the contents
Teac DV-W58G
NO
OK
Sony DRU-530A
OK
Recognize the disc but cannot rip or play the contents

Mitsumi drive playbacked successfully the Key2AudioCD protected disc but failed with the CDS200, where the drive recognized the disc but cannot rip or play the contents of the disc.


8. CD Recording Tests

Mitsumi DW-7872TE DVD±RW recorder - Page 8

CD Recording Tests

- CD-R Writing Tests

The Mitsumi DW-7872TE supports 8x, 16x, 24x, 32x and 40x writing speeds. Below you can see the CDSpeed writing simulation graph with Taiyo Yuden 48x CD-R media.

The simulation test, under Nero CD Speed, confirmed the manufacturer's specifications for 40x recording which is under CAV. The average speed was at 32.03x.

 

 

 

- Recording Times

We created an 80min data compilation with Nero Burning Rom and recorded it on a 700MB disc. The better time that Nec did was 3:08 minutes, with 40x writing speed selected.

Below are the best writing times For Mitsumi DW-7872TE drive at 8x, 16x, 24x, 32x and 40x with a Taiyo Yuden media.

In the following graph you can see the recording times with various media brands.

- CD-RW Writing Tests

The Mitsumi DW-7872TE supports 24x P-CAV maximum rewriting speed, with Ultra Speed rewritable media. Below are the results from the CDSpeed writing simulation test with blank 24x US-RW media from Mitsubishi Chemicals.

The test once again confirmed the drive's specifications for 24x rewriting. The average speed at the end of the test was 23.6x.

 

 

 

 

We also used Nero Burning Rom software to burn a data disc using 24x US-RW media from Mitsubishi Chemicals again. The data compilation, which we burned, had a size of 651 MB. The duration of the recording process was 3:41 minutes for Mitsumi.

- Packet Writing Tests

Using InCD and Mitsubishi Chemicals 24x US-RW media for all Packet Writing tests, quick format took 37sec. The formatted disc had 530mbs of free space. We copied a 403 MB file (412.822 KB) from Hard Disk (on the same PC as the recorder) to the formatted RW media through Windows explorer (drag and drop).

 
Operation
Duration
Average speed
Read
2:21 min
19.5X
Write
2:36 min
17.6X

- Other features

Overburning
Up to 89:57
CD text reading/writing
Yes


9. 3T Jitter Tests - Page 1

Mitsumi DW-7872TE DVD±RW recorder - Page 9

Writing Quality Tests - 3T Jitter Tests

On an 80min 48X CD-R disc from Taiyo Yuden we burned the same AudioCD project at 8x, 16x, 24x, 32x and 40x. The 3T Pit & Land Jitter graphs are presented here.

- 3T Pit results

As we can easily conclude from the graph above, the lower the speed the better is the quality. At 24x and lower, the writing quality is very good. Above 24x the litter values are increased, but not in extremely high levels.

The average 3T Pit Jitter values for all recording speeds are illustrated in the following table.

The average Pit jitter for recording speeds of 24x and over is acceptable, and very good for those below.

- 3T Land results

The jitter land levels illustrated in the graph above are for all speeds very good. Especially, once again, recording at 24x and below, is high quality recording.

The following average values graph confirms the very good burning quality of Mitsumi recorder.

Recording Speed
Average 3T Pit Jitter (ns)
Average 3T Land Jitter (ns)
> 35ns
Max 3T jitter values (ns)
8X
25.12
26.34
No
30 Pit, 30 Land
16X
26.95
28.41
No
30 Pit, 31 Land
24X
29.93
29.27
No
32 Pit, 30 Land
32X
32.95
31.34
Yes
38 Pit, 35 Land
40X
32.88
31.71
Yes
38 Pit, 36 Land
- Summary

Mitsumi DW-7872TE is a very good recorder, at least with Taiyo Yuden media. In the following page we test the drive's writing quality with other media brands.


10. 3T Jitter Tests - Page 2

Mitsumi DW-7872TE DVD±RW recorder - Page 10

Writing Quality Tests - 3T Jitter Tests

The same Nero compilation used in the previous jitter tests was used once again, this time with media from different brands. The recording speed was the maximum 40x in all cases. The following graphs show the 3T Pit & Land Jitter results.

- 3T Pit results

According to the results we took from the jitter measurements, Mitsumi performed very well with half of our media brands while with the other half the levels were increased. The Ritek, Maxell and CMC Magnetics are a very good combination with Mitsumi DW-7872TE recorder. The rest of the tested brands, Mam, HiSpace and Creation it is better to be avoided, in combination with this recorder.

The average 3T Jitter values for all manufacturers discs are illustrated in the following graph.

- 3T Land results

The jitter land values were almost at the same levels with this one of 3T Pit.

The average values presented below illustrates the drives recording ability.

Recording Speed
Average 3T Pit Jitter (ns)
Average 3T Land Jitter (ns)
> 35ns
Max 3T jitter values (ns)
Creation 48X
34.24
33.93
Yes
42 Pit, 39 Land
HiSpace 48X
35.32
34.54
Yes
40 Pit, 39 Land
Ritek 48X
29.71
30.29
No
33 Pit, 32 Land
Maxell 48X
31.68
30.59
No
34 Pit, 34 Land
CMC 48X
29.22
27.39
No
33 Pit, 30 Land
Mam 52X
34.71
33.17
Yes
40 Pit, 38 Land
- Summary

As we mention before some media brands can be burned better than others. This is natural since most drives are compatible with some media brands while are not with others. Maybe a firmware upgrade will improve the drives recording behavior with more media.

On the following page we check the C1 and C2 error rates for the same discs.


11. C1 / C2 Error Measurements

Mitsumi DW-7872TE DVD±RW recorder - Page 11

Writing Quality Tests - C1 / C2 Error Measurements

The C1 / C2 error rate was measured for the recorded discs burned during the previous writing tests (jitter). The software used was UMDoctor Pro II, and the reader was the Optorite DD0203 drive.

  • CMC Magnetics 48x recorded at 40x

  • Ritek 48x recorded at 40x

Below is presented information on the CD-R media used in this test.

Disc
ID Code
Capacity
Taiyo Yuden 48X
TaiyoYuden 97m24s01f
79:59:72
HiSpace 48x
97m25s07f
79:59:00
CMC Magnetics 48x
CMC Magnetics 97m26s66f
79:59:71
Ritek 48x
Fuji 97m26s45f
79:59:73
Mam 52X
Mitsui 97m27s58f
79:59:74
Maxell 48X
Ritek 97m15s17f
79:59:70
Creation 48X
Plasmon 97m27s18f
79:59:74
- Summary

According to our measurement the drive's CD writing quality is good with all media brands but mostly with Taiyo Yuden. The C1 levels are all quite low. However there were some cases that C2 errors were reported. The strange thing is that all the C2 error were occured at the 68 minute for all cases.


12. DVD Recording Tests

Mitsumi DW-7872TE DVD±RW recorder - Page 12

DVD Recording Tests

- Writing Performance

The Mitsumi DW-7872TE supports DVD-R/RW and DVD+R/RW writing. The maximum supported speed for DVD+R and DVD-R is 8x and 4x respectively, 4x CLV for DVD+RW and 2x for DVD-RW media.

8x DVD+R

A 8x DVD+R disc from CMC Magnetics was used to check the 8x writing strategy of the drive. The software used was Nero CDSpeed, and its "create disc" function.

The drive started the writing at 3.99x, maintaining this speed until the 800MB address mark on the disc, where the drive steps up to 6x until 2.75GB where once again step up to 8x writing for the rest of the recording (hence Z-CLV). The average speed is 6.33x.

 

 

 

CMC 4x DVD-R

Maxell 4x DVD+RW

CMC 4x DVD-RW

- Burning Tests

The best recording times are illustrated in the following table after burning 4315MB of data on various DVD±R, DVD±RW media, using the maximum allowed writing speed for each disc. For comparison, we also include the writing times for the Teac DV-W58G and Sony DRU-530A.

With the DVD-R/RW media Mitsumi was the fasted. However the reported recordings times for DVD+R/RW was the slowest for Mitsumi, as we expected, due to the average 6,3x for this format.

The table below presents the writing speeds, media name and media code for the various discs used.
Media
Code
Speed
CMC Magnetics 8x DVD+R
CMC MAG F01
8x
Mitsubishi Chemicals 8x DVD+R
MCC 003
8x
Taiyo Yuden 4x DVD+R
YUDEN000T01
8x
CMC Magnetics 4x DVD+R
CMC MAG E01
4x
Mitsubishi Chemicals 4x DVD+R
MCC 002
4x
Maxell 4x DVD+R
YUDEN000T01
4x
Mam 4x DVD-R
MCI4XG01
4x
Taiyo Yuden 4x DVD-R
TYG01
4x
Mitsubishi Chemicals 4x DVD-R
MCC 01RG20
4x
CMC Magnetics 4x DVD-R
CMC MAG AF1
4x
Pony 4x DVD-R
RITEK G04
4x
Mitsubishi Chemicals 4x DVD+RW
MKM A02
4x
Maxell 4x DVD+RW
PHILIPS 041
4x
Pioneer 2x DVD-RW
PVCW00V00245
2x
Mitsubishi Chemicals 4x DVD-RW
MCC 01RW4X
2x
Philips 8x DVD+R
PHILIPS C08
1x

Although TY and Maxell DVD+R have the same ID, they burned in different speeds. Below are the screenshots from Nero:

Maxell 4x DVD+R

TY 4x DVD+R

- Packet Writing Tests

For this test we copied a 403 MB file (412.822 KB) from the hard disk (on the same PC as the recorder) to the formatted RW media through Windows explorer (drag and drop).

DVD-RW
Duration
Average speed
Read
2:06 min
2.4X
Write
2:38 min
1.9X

DVD+RW
Duration
Average speed
Read
2:06 min
2.4X
Write
1:26 min
3.5X

13. KProbe PI/PO quality tests

Mitsumi DW-7872TE DVD±RW recorder - Page 13

PI/PO quality results

The following screenshots show the PI/PO results for various DVD-/+R and DVD-/+RW media, recorded with the Mitsumi DW-7872TE at the maximum allowed speed.

The software used for the measurements was KProbe v1.1.28, the ECC was set to 8 and the reading drive was the LiteOn LDW-811s. The specific methodology is very dependent on the drive used as a reader, while the reliability of the PI/PO provided output is also not technically confirmed. Hence as a result, we cannot safely come up with conclusive results, although we do make a comparison of the drive's behaviour when using various DVD recordable/rewritable media.

The recording discs used came from Mitsubishi Chemicals, CMC Magnetics, Taiyo Yuden, Maxell, Pioneer and Ritek. Further details about each disc type are presented at the bottom of this page.

Media
Code
CMC Magnetics 8x DVD+R
CMC MAG F01
Mitsubishi Chemicals 8x DVD+R
MCC 003
Taiyo Yuden 4x DVD+R
YUDEN000T01
CMC Magnetics 4x DVD+R
CMC MAG E01
Mitsubishi Chemicals 4x DVD+R
MCC 002
Maxell 4x DVD+R
YUDEN000T01
Mam 4x DVD-R
MCI4XG01
Taiyo Yuden 4x DVD-R
TYG01
Mitsubishi Chemicals 4x DVD-R
MCC 01RG20
CMC Magnetics 4x DVD-R
CMC MAG AF1
Pony 4x DVD-R
RITEK G04
Mitsubishi Chemicals 4x DVD+RW
MKM A02
Maxell 4x DVD+RW
PHILIPS 041
Pioneer 2x DVD-RW
PVCW00V00245
Mitsubishi Chemicals 4x DVD-RW
MCC 01RW4X

The drive reported good writing quality with most of the media we tested. However there were some cases where the PI/PO levels were increased.


14. Conclusion

Mitsumi DW-7872TE DVD±RW recorder - Page 14

Conclusion

Pros

Cons

  • 8x DVD+R writing
  • 4x DVD+RW writing
  • 40x CD-R writing speed
  • Excellent DVD error correction
  • Very good CD writing quality
  • Long supported DVD media list
  • Supports CD-Text (reading/writing)
  • Makes partially working backups of SafeDisc v3.10 protected games
  • Poor performance with ABEX TCD-726 test disc
  • Mount Rainier is not supported
  • Low reading speed with rewritable media
  • The CDS200 protected AudioCD is not supported
  • DVD writing quality

Mitsumi drive is a fast CD reader with also good seek times. Its ability with defected discs depends on the type of defection. It performed well with artificial scratches but not with fingerprints.

As for a DVD reader, Mitsumi was again fast with recordable and pressed media. However with rewritable media we expected to be faster since the average 4.6x is rather low. Thus the seek times should be lower. The drive's DVD error correction ability was better than with CD media, in fact it was great. It managed to playback all of our test disc without reporting any error.

The drive managed to make SafeDisc v3.1 working backups. However the strange is that those backups are not playable in the same drive, DW-7872TE, while are in same other. Apart from this the drive is very fast in ripping process with all the game types we tried.

According to DAE test the drive has a good performance. On the other hand the drive managed to playback and rip Key2Audio but not the CDS200 protected Audio CDs. The drive also can play or rip 99 minutes AudioCDs.

In the CD recording tests the Mitsumi drive performed very good. The supported 40x maximum writing speed is high. Also the writing CD quality is good, especially with Taiyo Yuden media. However we would like the supported media list to be longer. Maybe a firmware upgrade will improve this.

Inspite of the fact that the drive's average recording speed was 6.3x, generally performed good. The PI/PO levels are generally acceptable. However there were some cases that those levels were extremely high.

The drive is currently not yet available in the market. The upcoming price, according to Mitsumi, will be at 169 euro, which is a very high price. We estimate that with a much lower price, since there are 8x dual DVD recorders already available at 100~130 euro, will be a good purchase.



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