Machines used in the test :
Our tests were performed on two different machines, as the SuperMicro board we used for the previous generation processors had a bug which meant it could not fully support the L5640's turbo mode.
The benchmarks were set by the following setups:
Dual Quad-core :
2 Xeon X5560 ES (2.8 Ghz - 3.06 Ghz with Turbo mode)
Dual Hexcore :
EVGA SuperRecord 2
2 Xeon L5640 ES (2.2 Ghz - 2.5 Ghz with Turbo mode)
The other components in the test machine were the same for both systems:
6 x 2 GB Crucial ECC DDR3-1333
2 Noctua NH-U12P SE2
Nvidia 9800 GT
Windows 7 Professional 64-bit
The tests were carried out using one unit from project 6014 for standard SMP benchmarking and one unit from project 2685 for -bigadv benchmarking.
To measure power consumption, we used a watt meter manufactured by Watt&co. The values given are for total system power consumption, not just the CPUs. For Folding@home power consumption, only the SMP client was running.
Where possible, we will only give a single value for each WU type (currently sorted by how many points the relevant unit is worth). Measurements have been made using projects currently being assigned at the time of writing the article. For ease of use, all performance comparisons are given in PPD. The value we have used is the effective time per frame over the whole unit as measured by FahMon.
We use the site http://sites.google.com/site/mrjellyorg/folding-home/calculator to calculate the true PPD including bonus for SMP and bigadv units
The overclocked frequency of the L5640s was obtained with turbo mode enabled and a QPI of 195MHz. This resulted in a clock speed of 3.7GHz for the 12 cores with the boost from Turbo mode.
Folding@home performance (PPD)