Issues in prime 95

[Martin 71]

I have my Phenom 2 965 at 3.8ghz and a vcore of 1.40. When running prime 95 I either get a Bsod or worker #3 gets a fatal error in all of the 3 test types. It used to be stable, I'm really confused. Any help?

 

[Hobybobag]

I have my Phenom 2 965 at 3.8ghz and a vcore of 1.40. When running prime 95 I either get a Bsod or worker #3 gets a fatal error in all of the 3 test types. It used to be stable, I'm really confused. Any help?

that might not be quite enough voltage, try bumping it just a little and running prime95 again

 

[Martin 71]

I bumped the voltage to 1.427 and it seems more stable, but in AMD overdrive, it shows the vcore @ 1.375

 

[Martin 71]

it's still crashing. On the third core. Always the third core. I pushed to 4 ghz and vcore of 1.487 and it's still getting a fatal error on the 3rd core. Is my cpu dead?

 

[green300]

What fatal error are you getting ? rounding error ? If it is look at memory, either bumping cpu_nb voltage and or dram voltage.

You mentioned your oc was stable at one point and that this new, clear cmos and start over.

Make sure your memory is at specs, even try 2T over 1T. If after voltage bumps and clearing cmos you still get the error run memtest on each stick individually in the same slot, could be one stick is flaking out on you.

 

[Martin 71]

It's a rounding error. I'll bump nb and dram voltages... thanks... What are 2t and 1t?

 

[green300]

cpu_nb not nb. cpu_nb will increase the voltage to thee IMC (integrated memory controller)

2T is the command rate of your memory. 2T is more stable than 1T.

 

[henydiah]

If oc just use for bios it's best way for you , if oc use bios uninstall amd over drive.
For safety hardware use good cooler cpu
Many setting need change in bios if overclock :
For state : disabled C1E n cool n quite, spread spectrum
Overvolt : Vcore (1.44 can get 4ghz) ,
vdim (max ddr3 up to 1.65V)
HT link keep 2000 - 2500
Check all setting in soft cpu-Z
Test in prime use small fft 8hours enough

 

[Martin 71]

So, I should only run small fft? I've been using large 'cause I read that it creates the most heat.

 

[Martin 71]

Oh, and Temps are not a problem... I have an aftermarket cooler And the max I've seen out of it is 51c

 

[green300]

if you run small fft's only your only testing the cpu, large fft's test memory and imc. run blend to test the whole system...

 

[henydiah]

For fast0 test stable to ram use intel burn test : test ram maximum and 20 test, IBT is very fast. or use OCCT set cpu:mem run at mem 90%free cpu on normal 2hours enough

 

[henydiah]

For fast0 test stable to ram use intel burn test : test ram maximum and 20 test, IBT is very fast. or use OCCT set cpu:mem run at mem 90%free cpu on normal 2hours enough