ATI
Legacy Member
Hallo
Ik ben aan het lezen om mijn cpu te overclocken en had topic gemaakt op overclock.net en dit is wat ene zegt!Klopt dat wat ie zegt doen of niet doen???
Too be honest, 3.4GHz is a easy goal to reach. You can do that fairly quickly without going in 100MHz increments. I would first recommend figuring out the stable voltage and settings for the FSB of your target goal 3.4GHz.
So what I recommend is setting the CPU's multi to x6 (lowest it will go) and bring the FSB to 425. This will bring your CPU up to 3.4GHz once you brig the default multi back up to x8 from x6. 425 FSB should be fairly easy for your P45 chipset board.
There is one thing to consider in all of this, and that is your ram. The ram is also tied to the FSB. So at the lowest mem divider of 2:1, you will have to run your ram at DDR2 850 (425 x 2). This is very possible with DDR2 800 ram. On that note, what is your OCZ ram rated for? And do you have a 2x2Gb kit or a 4x1Gb kit?
Back to the FSB. For a 425 FSB, you will need to mess with the GTL REF voltage and the Northbridge (NB) voltage (or called MCH in bios). Now it has been a while, but I believe the default NB voltage is 1.10v. I thi8nk you can push 425 FSB with 1.20v, and should not go any higher then 1.25v. As for the GTL REF voltage, it is done by a strength setting, so try setting it to: 0.65.
There is also a FSB termination voltage to change. I would set it to 1.22v - 1.24v. This actually has more to do with cleaning the signalling of the voltage then actually giving the northbridge any sort of power. So setting it too high (you should not need to go over 1.28v and never go over 1.35v) can cause instability as it can distort the signaling.
Once youve got the FSB and ram stable and figured out, OCing the CPU should be a breaze because up until now you've kept it out of the equation by dropping the multi to x6 (425 x 6 = 2.550GHz). Bring it back up to x8, give the vcore a bump, and test. if it is not stable, bring the vcore up in increments. You should not have to change any other voltages since you know the FSB and ram are stable. That is the reason to isolate the FSB (and inherantly the ram) first, then OC the CPU.
Here is a great rundown of your bios:
Ik ben aan het lezen om mijn cpu te overclocken en had topic gemaakt op overclock.net en dit is wat ene zegt!Klopt dat wat ie zegt doen of niet doen???
Too be honest, 3.4GHz is a easy goal to reach. You can do that fairly quickly without going in 100MHz increments. I would first recommend figuring out the stable voltage and settings for the FSB of your target goal 3.4GHz.
So what I recommend is setting the CPU's multi to x6 (lowest it will go) and bring the FSB to 425. This will bring your CPU up to 3.4GHz once you brig the default multi back up to x8 from x6. 425 FSB should be fairly easy for your P45 chipset board.
There is one thing to consider in all of this, and that is your ram. The ram is also tied to the FSB. So at the lowest mem divider of 2:1, you will have to run your ram at DDR2 850 (425 x 2). This is very possible with DDR2 800 ram. On that note, what is your OCZ ram rated for? And do you have a 2x2Gb kit or a 4x1Gb kit?
Back to the FSB. For a 425 FSB, you will need to mess with the GTL REF voltage and the Northbridge (NB) voltage (or called MCH in bios). Now it has been a while, but I believe the default NB voltage is 1.10v. I thi8nk you can push 425 FSB with 1.20v, and should not go any higher then 1.25v. As for the GTL REF voltage, it is done by a strength setting, so try setting it to: 0.65.
There is also a FSB termination voltage to change. I would set it to 1.22v - 1.24v. This actually has more to do with cleaning the signalling of the voltage then actually giving the northbridge any sort of power. So setting it too high (you should not need to go over 1.28v and never go over 1.35v) can cause instability as it can distort the signaling.
Once youve got the FSB and ram stable and figured out, OCing the CPU should be a breaze because up until now you've kept it out of the equation by dropping the multi to x6 (425 x 6 = 2.550GHz). Bring it back up to x8, give the vcore a bump, and test. if it is not stable, bring the vcore up in increments. You should not have to change any other voltages since you know the FSB and ram are stable. That is the reason to isolate the FSB (and inherantly the ram) first, then OC the CPU.
Here is a great rundown of your bios: