AMD Phenom II X4 955 C3 oc help

[JesseLactin]

I'm trying to OC my Phenom II X4, and I can't seem to get past 3.7 GHz(tried 1.45v). Could I have "hit the wall" this early? Or is it my cheap mobo that's preventing me from going further?

 

[Mr Muggles]

3.7 is more than enough, it's an old CPU.

i've had the 965 and now using 970BE which will OC to 4ghz stable. ?

You have to over-volt the CPU though so I don't like doing that.

 

[JesseLactin]

I think it may be my PSU that is holding back my OC.

 

[BrandonR-NZ]

My PII 955 has been running at 4GHz @1.45v for like 4 months 24/7, it's rock solid, never hits above 55 Degrees C.

 

[JesseLactin]

How many amps should I have on the 12V2(4 pin CPU)? I've got 18 max, 16 if 12V1 maxes out(18A max on 12V1).

 

[JesseLactin]

How many amps should I have on the 12V2(4 pin CPU)? I've got 18 max, 16 if 12V1 maxes out(18A max on 12V1).

 

[S1EJ0]

18Amps per rail, what size PSU you using?

It's more than likely you motherboard doesn't have enough options. You need to alter more than just the CPU voltage, and if your motherboard doesn't give you those options then you can't stabilize your overclock.

EDIT: just checked your profile as you are using intergrated graphics your PSU is fine so will not be the PSU.

Read the below for guidence

http://sites.amd.com/us/Documents/AMD_Dragon_AM3_AM2_Performance_Tuning_Guide.pdf

 

[JesseLactin]

What should I do to stabilize my OC? It's largely for F@H, not epeen. I got it chugging along at 3.8GHz, without changing any other setting. Even though I'm using an IGP, I'm getting a new PSU soon, mine ought to die sooner or later. It's like 7 years old. I can indeed change HT Link Speed (maybe, SMP folding and don't wanna stop), or CPU NB speed, not sure which. Oh yeah, it's not the oldest P2 around, it's a C3. 4GHz should be doable. People were getting 3.7-3.8 on the C2 revision.

 

[JesseLactin]

How much voltage should I use? I just dropped a F@H WU running @ 3.7GHz, 1.4125V. Now running w/ 1.435V

 

[kilobravo]

Ht link 2000-2200 should be stable.Its most likely Ht link.

1.435v is more than enough for 3.7ghz

 

[JesseLactin]

I can change both the HT Link and the CPU NB speed, but the BIOS "unlocks" options only when I increase the CPU NB speed first. I'm running the same unit (6894) again. Hope it works this time. Not too warm (49-50 ºC), but I won't push it.

 

[GamerMan3D]

just saying i got my 955 from 3.2 ghz to 4.2 ghz on aircooling temps never go above 53

 

[airdeano]

please notice the dates on some of these searches.. this was back in august 2011