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,
Because 6164HE is K10 and 6274 is Bulldozer. The 1st consists of two downvolted/downclocked Phenom II X6 dies, therefore 12 FPUs per each CPU. The 2nd consists of two downvolted/downclocked FX dies, therefore 8 FPUs per each CPU. In addition, K10 delivers better performance per GHz, though Bulldozer supports AVX with FMA.