Quote from: Trillium on August 06, 2013, 09:51:18 AM

Quote from: 1l1l11ll1l on August 06, 2013, 12:03:42 AM

Also, in case anyone is curious

24-core Opteron 6164HE 1.7GHz:
"chainspermin" : 29,
   "chainsperday" : 1.67533939,
   "primespersec" : 8389,

32-core Opteron 6274 2.2GHz:
"chainspermin" : 12,
   "chainsperday" : .71721642,
   "primespersec" : 7039,

From PassMark and the opteron wiki page:
http://www.cpubenchmark.net/cpu_list.php
http://en.wikipedia.org/wiki/List_of_AMD_Opteron_microprocessors

Dual CPU, 12-core opteron 6164HE's PassMark CPU result: 5351/ea, 5351*2 = 10702 ||| Cache arrangement; L2: 12x 512 KB L3: 2x 6 MB
[Dual CPU] AMD Opteron 6274 PassMark CPU result: 10809 (inclusive of both) ||| Cache arrangement; L2: 8x 2MB L3: 2x 8 MB

If I had to guess, the dual cpu, 16 core setup (6274's) is slower because it shares one unit of L2 cache between two cores. The HE's have dedicated L2 for every core.

Despite the disappointing(?) performance, those are still all nice systems and I would mine on them any day.

Looking at the specs on AMD's site, it shows the L2 cache of the 6274 at 1MBx16

http://products.amd.com/en-us/OpteronCPUDetail.aspx?id=760&f1=AMD+Opteron%E2%84%A2+6200+Series+Processor&f2=&f3=Yes&f4=&f5=&f6=G34&f7=B2&f8=32nm&f9=&f10=6400&f11=&
http://products.amd.com/en-us/OpteronCPUDetail.aspx?id=649

If that were the case then the only thing left would be the L1?