First benchmarked using latest Passmark. Then did some tests with latest Aida64. What's interesting here is that both processor and memory speed keeps fluctuating. I have not found a good explanation for this behavior.
Hardware: HP ProLiant DL380 G7 Mushkin Enhanced Chronos SSD - 2.5” 240GB SATA III MLC (MKNSSDCR240GB) (RAID1) 2 x Seagate Savvio 10K.5 hard drive - 300 GB 2.5” 6Gb/s SAS 10000 rpm 64 MB Buffer (ST9300605SS) Benchmarked with CrystalDiskMark 3.0.1 x64 on Windows 2008 R2 Std + SP1.
I recently had a Microsoft workshop session and became excited about parallel for/foreach/etc. There we got a solid 60% of efficiency. It means that whenever number of cores increases by 2x, performance is boosted by 1.6x.