Vista - Intel Overclocking Guide

I'm new to overclocking with Intels as I've used AMD for the last few years, but is the CPU:RAM divider the FSB divided by 4?

I was testing some OCing last night, and put the FSB QDR to 1500 with the multiplier at 7, which got my E8200 from 2.66 to 3.00GHz and it ran fine with no noticable temp increase of voltage increase needed.

My RAM is only 667MHz atm, so 333MHz, so keeping the multipler at 7 and putting the FSB QDR to 1500, would have an external clock speed of 375. Is this a good setting to have? It ran stable after a few benchmarking tests and the CPU score in 3dmark vantage increased by over 1000 as well.

Try setting the FSB to 1600 and the multi at 8x to give 3.2Ghz raise the memory to 400 and change the memory timing to about 5,4,4,12 T2, set the memory voltage to 2.1v and the CPU voltage to about 1.35v which will be about 1.32v in CPU-Z.

That should give you a nice solid OC, as long as your RAM can hold those settings, I have some RAM on a older machine running that spec and that was just generic 667mhz RAM so should be OK

My CPU is the same as yours but I have a 9.5 multiplier but aside from that I am using those settings I gave you 24/7

I just noticed that with your FSB at 1500 with your multi set to 7 that will only give you 2.625Ghz so that would mean you have underclocked your CPU but you have increased your FSB and RAM speed which would explain your results in 3DMarkVantage.

To see your Result of your overclock check it with CPU-Z as I take it you were using Vantage to see 3Ghz but that will show you what it would be with your multi at 8.

So with your Bus speed at 375 x your multi at 8 will give you 3Ghz (3000Mhz). Your Bus speed of 375 x 4 will give you your FSB of 1500 and your Ram speed set at 375 x 2 will give you 750Mhz.

Sorry, it's a multiplier of 8 I had, not 7. 7 is what I was going to try.

So it would have been 1500/4 = 375, then 375x8 for 3000.

I'm not sure it has a RAM thing like what you described. There's a RAM frequency bit I can increase, but while I'm raising the FSB, the RAM frequency changes between 629 to 667. It was at 667 when I hit 1500, so would I just raise this to overclock the RAM?

Yes you should be able to do that, although you can keep the RAM where it is if you like, it's not a necessity to overclock the RAM with your CPU and sometimes it's better to have it lower if you want a higher CPU clock.

Hi Folks, finally tried my first overclock on my Q6600 and it seems to be ok. I've altered the FSB frequency to 333 Mhz put the PCie frequency to 101 and the FSB strap to NB at 333.
This gives me a speed of 3005 Mhz on the 9x multiplier and that flips to 2003 on the 6x.
This Asus P5Q Pro has this power saving function that flips the multiplier automatically.
Everything seems to be stable so far and my idle speeds according to Core Temp are at between 55 and 59 on all 4 cores.
I just played Crysis Warhead for 40 minutes and my temps shot up to the late 70s reaching 80c on one core.
Is this ok temperature wise?
I'm running DDR2 8500 at 1066Mhz.
Comments welcome.
Thanks, John

Your overclock is good but not your temps, you need to get better CPU cooling, you don't want to go any higher than 65c for any amount of time.

Okay, thanks a lot for your help

Your Welcome

Hi Mr Grim, thanks for your input. I have a Thermaltake Golden Orb CPU cooler which I had hoped would be sufficient but apparently not.
On the other hand I've just had a system refurb (new mobo) performed at a local PC store so it might be that they have not replaced the cooler correctly.
Do you think this might be the case or do you feel the Thermaltake is insufficient?
If so could you recommend a better cooler?
Thanks for your help, John