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Home > Hardware Reviews > PC Parts

Tuesday, February 24, 2009
Patriot Memory PC3-12800

3. Benchmarks

Here is the configuration of our test PC:
  • CPU: Intel Core i7-920 Retail
  • CPU Cooler: Titan Fenrir
  • Motherboard: Asus P6T Deluxe/OC Palm Edition BIOS 1102
    PSU: OCZ GameXStream GXS600 SLI-Ready
  • VGA: MSI 7600GT Silent (stock memory/core timings)
  • HDD: WD 800JB
  • OS: Windows VISTA x64 SP1 with all the latest updates installed

Generally, before installing ay new memory modules, it is wise to update the BIOS of your motherboard to the latest version. This will ensure that your motherboard is compatible with the memory modules you bought and will also fully take advantage of the increased speeds of your memory.

For the stability tests, we used Prime95 v25.6 and MemTest v3.80 software under Windows VISTA x64.

The Asus P6T motherboard we used for this test offers various dividers in order to "overclock" memory without messing up with the processor. We left most of the BIOS options to the "Auto" mode and set the the DRAM voltage at 1.66V. Intel suggests that the memory voltage should not exceed the 1.65V, but our Asus motherboard doesn't include the 1.65V option, so we selected the 1.66V, which anyway shouldn't affect the results.

The memory was recognized as 1066MHz at CL7, but we managed to get CL6 without any problems:

Click To Enlarge!
(Click To Enlarge!)

Going further at 1333MHz, we selected CL7 and CL8, but the motherboard refused to work. So we went back back to CL9, which proved to be stable:

Click To Enlarge!

The advertised DDR3-1600 comes easily with CL9. With the voltage set at 1.66V we have a totally stable system:

Click To Enlarge!

After that point you have to either select the DDR3-1866 under BIOS or go try to manually find the overclocking limits of the memory kit. We selected the DDR3-1866 with no luck so we lowered the frequency to the DDR3-1600 divider and we increased the CLK. The memory seems to be totally stable at DDR3-1708 with CL9 @ 1.66V

Click To Enlarge!

Sisoft Sandra Memory Benchs also indicates that the higher speed we set in the memory modules, the better our system goes. Starting from the 1066MHz and 19.11GB/sec, we reached the 28.56GB/sec at 1708MHz, a good performance gain.

Patriot Memory PC3-12800
Memory Bandwidth (GB/sec)
Memory Latency (ns)
Cache And Memory (GB/sec)
1066-CL7-7-7-20-1T-1.66V
19,11
79
60,60
1066-CL6-6-6-18-1T-1.66V
19,37
76
60,71
1333-CL7-7-7-20-1T-1.66V
23,50
69
66,00
1600_CL9-9-9-24-1T-1.66V
26,82
65
69,33
1708_CL9-9-9-24-1T-1.66V
28,56
61
73,62

The Everest Ultimate Edition provides more performance figures for the DDR3-1600 and DDR3-1708 speeds:




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