Have you tried testing with HyperPi 32M to see if it's the RAM?
It might be something else. It also depends how you fail, i.e. if 0x124 BSOD, definitely CPU.
The best test for RAM I've found is HCI Memtest. Take your total available RAM and divide it up across how ever many threads your CPU has. So for a Quad core with 5600MB RAM available run 4 instances of HCI Memtest with 1400MB RAM per instance. If there are big memory problems it will error right away, for long term stability testing I let it run till it passes 10,000% coverage with no errors to be sure.
thanks for reminding me of that software, gona see if i find a solution for that problem.
any suggestions other than increasing Vdimm?
will HT speed change anything when it comes to stability?
maybe some RAM drive strength adjustments help?
here some details about the current ram settings:
Vdimm: 1.70v (1.65v stock)
NB voltage: 1.20v
CPU-NB voltage: 1.50v (wanted to make sure that is not the problem... NB@2600mhz)
Vcore: 1.50v @3.6ghz (also to eliminate cpu fail)
all other voltages are stock.