Panasonic
LF-D311 IDE DVD-RAM/R
- Page 3
CD Data Tests
- Test Method
* SCSI Mechanic v3.0x: This was used to compare the drive's
I/O performance against other various CDR-W drives (see charts). We used a pressed
CD containing PlexTools v1.08 for all tests.
* Nero CD Speed v0.84b was also used to check the drive's
performance with pressed CDs. For that test, we also used the PlexTools v1.08
pressed CD.
- SCSI Mechanic v3.0x results
The Panasonic LF-D311 has good performance for a 24x CD-ROM reader.
It managed to outperform Pioneer DVR-A03 but stays behind Ricoh MP5120A, which
however is a 32x reader. The Average Random I/O score is not as good as the
specs say.
- Nero CD Speed v0.84 results: (Click
to see the CD Speed Graph)
Using Nero CD Speed 0.84, we can see that Panasonic LF-D311 average
reading speed is 20.27X. The drive starts reading at 12.14X and ends at 26.59X.
We thought that Ricoh's MP5120A "seek times" results
were impressive. Panasonic manages to further reduce the seek times around 91ms
in the random access test.
- PSX Pressed Media
For this test we used the PSX game 'NBA Jam Extreme' and we ripped the image
to HD with CloneCD. We measured the reading times for the Panasonic LF-D311,
which was very low compared to other drives (84secs):
- CDR Media: (Click
to see the CD Speed graph)
With CDR media, the Panasonic LF-D311 has an even higher reading
speed of 20.7X compared to the pressed CD results.
- DVD Speed v0.52: (Graphs for DVD-ROM,
DVD-R,
DVD-RW
, DVD-RAM)
The Panasonic LF-D311 has 6X (max) DVD reading speed which enough
for our daily needs.
The DVD seek times of the Panasonic LF-D311 with DVD Speed were
very low, which leads us to the conclusion that there is some kind of bug here.
The DVD Speed gives zero (0) seek times for random use and 63ms for full stroke.
When ripping DVD movies, the Panasonic LF-D311 give an 6764Kb/s
average transfer rate, which is the highest among the three tested drives.
The Panasonic LF-D311 cannot recognize the DVD+RW media. The
results with DVD-R/RW media are very good. Lastly, the drive reads the DVD-RAM
media with a 2698Kb/s transfer rate (CLV).
- Movie Tests
We tested the Panasonic LF-D311 with many DVDs and our overall
impression was very good. When we played the DVD movies, the average CPU Usage
was 45% using PowerDVD v3.0 Build 0421. We noticed no problems during DVD playback.
