About 2 month ago, I bought my comp(mainboard R.AB0), memory tested with memtest test#5 @273 3-3-3-8 1T 2.8v no error.
Cpu can run FSB 270x10 3-3-3-8 1T 2.9v div200(1:1) superpi32M passed.
After I failed to flash my BIOS and get another mainboard(R.AB0 too), I tried oc my cpu to 278x10(may be too hot; 57-60c) then I started get another problem, suddently restart and I can't install windows in opt default setting(FSB200x10), I RMA the mainboard(I think the mainboard defect).
Two weeks ago, the new mainboard(R.AD0) arrived, but I can install OS in optimize default(200x100) if I gave vDRAM 2.8v and can run superpi 32M.
but strange freq shown on cpu-z when I used div120 and div140
also div140 can run superpi faster then div150 ??:confused:
Two days ago, set on opt default with vDRAM 2.8v I tried to run prime for 15 hours and no error, but after that it can't pass superpi 1M ? :confused:
Yesterday ,with all setting in optimize default(vDRAM 2.6v), I tested my memory with memtest test#5 for about an hour no error found, but can't load windows
then I tried to give the vDRAM 2.7v ---> just load windows, but superpi 1M failed,
I gave it more volt(2.8v)--->can load windows, prime for 12hours and superpi 1M passed, but superpi 32M failed.
Now,I give it 2.9v--->can load windows, superpi 32M passed.
I try memtest test#5 can reach FSB 245 2.5-3-3-8 1T @2.8v for an hour without error.
I try superpi 1M with 245x10 2.5-3-3-8 1T 2.8v div200(1:1) always restart can't load windows.
VDRAM 2.9v--->load windows superpi 1M fail.
FSB245x10 2.5-3-3-8 1T 2.8v div100 superpi 32M pass.
From this experiment, I can't get conclusion what's wrong? memory or proc? I don't have another proc,memory or mainboard now.
I have bought dfi expert and memory that will arrive in a few days.
Because I don't know which is defect, if I use my proc and old/new memory on old/new mainboard, will this cause my new memory and mainboard defect too?
Please help me to get conclusion which hardware is defect?