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Old December 24, 2009, 08:04 AM
windwithme windwithme is offline
Join Date: Jul 2009
Posts: 580

PCMark Vantage => 15482

DK P55 performs stable in 200/ 2000MHz.
To compare with other P55, there is no difference in voltage setting.
OC performance is better than average.

DDR3 bandwidth
DDR3 2000 CL8 8-8-25 1T,1.53V
Sandra Memory Bandwidth - 24479MB/s
EVEREST Memory Read - 18567MB/s

DDR3 2100 CL8 8-8-25 1T,BIOS 1.63V
Sandra Memory Bandwidth - 26008MB/s
EVEREST Memory Read - 19645MB/s

Memory bandwidth of DK P55 is a little bit higher than others. However, the frequency reaches 2100MHz only.
I hope that DFI can break through the bottleneck and release new BIOS for overclocking.
Software bundling is the weakness part in DFI product.
Finally, DFI adds some useful tools for P55 series such as Auto-boost, bclk OC & BIOSecure.

BIOSecure let you recover BIOS when crashing.
Generally, you have to send the board back when BIOS is crashed; with BIOSecure, you can recover it by yourself immediately.

If your board cannot boot anymore, you can user BIOSecure on the other PC or NB as “BIOS programmer”.
Simply “install” the new BIOS via mini USB port, your board with be fully recovered within 1 minute.

Then, let’s try higher bclk and DRAM frequency
CPU 210.8 X 20 => 4216Mhz
DDR3 218 CL8 8-8-25 1T

Hyper 4 X PI 32M=> 9m 24.406s
CPUMARK 99=> 653

Nuclearus Multi Core => 25975
Fritz Chess Benchmark => 25.89/12425

CrystalMark 2004R3 => 305172

1 CPU=> 5966
x CPU=> 21375

PCMark Vantage => 16052

CPU works stable in bclk 210.8MHz, it could be higher if you enable “CPU/DRAMCOMP”.
When OC to 4.2GHz, it still passes the test. Of course, if shows the OC performance.
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