[Kazumi]

So, I'm trying to fine tune my 4.0Ghz OC. Took me around 4 1/2 hours last night to get a stable OC. I'm at 20X multi, 1.488v, I had to drop the NB from 2000 to 1800 to stabilize the OC and pushed the NB volts from 0.800 to 1.100v.

Any suggestions on a better method to balance this OC out? sitting at 51c during prime 95 testing.

 

[Anonymous305]

I would recommend keeping your NB at 2000 even if it requires backing off your OC a little

Edit: I mean if you can keep a 2000 NB at 3.8 you wont notice the 200mhz the diff trust me

 

[jellis142]

Push that NB.

I get MUCH better performance running a 2.4Ghz NB @ 3.8Ghz than I do with a 2Ghz NB @ 4.1Ghz. You'd be surprised how much you can gain with a combination of CPU/NB overclocking. Communicating with GPU's is one of them.

 

[linkin93]

My NB is at 1.3v for 2.8GHz just for reference

 

[Kazumi]

So try a reduced CPU OC but instead go for a NB OC. WHat would you suggest 2400?

 

[Anonymous305]

yeah try to maintain 2000+ NB when you lower it doesnt really matter how high your OC is based on the chip you will get better performance with 2000+ NB even if its lower OC

 

[linkin93]

2400 minimum for 1600Mhz RAM. As high as possible is best though

Especially because you have 1866 RAM.

 

[Kazumi]

I was getting unstable at 4.0Ghz and a higher NB oc. But I'll try boosting more Volts and boosting the NB up.

 

[Anonymous305]

try lowering the OC to 3.8 for 2400 NB you wont notcie a 200 mhz drop on the chip OC

 

[Anonymous305]

Edit: lol sorry for double post im a little drunk and typing isnt going good for me right now

 

[razaice]

Quote:

Originally Posted by Kazumi I was getting unstable at 4.0Ghz and a higher NB oc. But I'll try boosting more Volts and boosting the NB up.

Yeah, it's pretty much a question of making the voltage high enough to support whatever overclock you're aiming for. Most likely the reason you're seeing the instability you mentioned is because your voltage is too low. Try not to go over 55c temps too.

 

[Anonymous305]

Just remember dont go over 1.5v on your chip trust me I settled for 4.0 at 2400NB at 1.42 because I want my chip to last atleast until I finish college I could probably go higher but I dont want to kill it with max voltage until I have too

 

[Kazumi]

So I tried the same 4.0Ghz OC with NB at 1.250v no go. So trying 1.3v now. Lasted a little while before. So we shall see.

 

[Kazumi]

Crashed. So I'm trying 1.35v on NB and reduced the OC from X20 to X19.5 for 3.9Ghz

 

[Kazumi]

Was holding at the current NB OC and Volts. However I broke 56c so I stop'd and went ahead and reduced volts to 1.466 down from 1.488 to see if I can keep it below 55c

 

[Kazumi]

I've read all across OC.net and other AMD sites. that the max temp is 62c on the AMD 965 BE. Only on the last couple weeks have I noticed people now saying 55c. Why the change?

 

[Kazumi]

Anyone?

 

[Anonymous305]

its 62c for max i run my 1090t 50ish just dont go above 62c anything below that is fine but if your close to max temps back off OC a little 62c is the max but i dont go above 60c max just to make sure my chip will last for atleast a couple years

 

[Kazumi]

That's what I thought. I've been trying to battle below 55c. and I know that was never gonna happen..haha 60c..Now that's very possible.

 

[Kazumi]

I'm currently under full load prime95 testing at stable 59c..haha I'm gonna let this test a bit more, then down the Vcore a bit to reduce temps and hopefully stabilize at 55-57c during prime testing.