So I was wondering, how much of a difference am I going to notice going from 1066fsb to 1333fsb, if I'm only actually increasing the the processors resulting frequency by ~200mhz.
Stock we have it sitting at 266x9 (2.4GHZ) with a fsb of 1066.
I've set the fsb to 1333, but lowered the multi to 8, resulting in 333x8 (2.66GHZ).
I'd had it set to 333x9 (2.99GHZ), but that caused an error in my Prime95 burn.
That may in turn be because my Q6600 was undervolted at the time (only a little, sheesh), so I've set the vcore to stock and I'm letting it burn in Prim95 at 2.66GHZ.
Temps look fine; more than fine actually, but I don't suppose that I should expect much a difference from a 200mhz overclock. Now I don't know how hot the northbridge is getting, but this board is rated for 1600fsb, so, I don't expect that it's getting terribly hot.
You might check out this thread if you have any other questions about my build ;3.
Well what you need to do is get Everest and check yourr VID. Whatever it is (maybe 1.25v) set it to that in BIOS and make sure to set your memory timings and voltages to the spec. That should let you get a 3GHz OC without Prime95 errors. I did it at 1.248v with Prime95 stable for 12 hours.
The increase you would see is relative to say a Q6700 right now and if you OC it to 3GHz it would be just about the same performance as a QX6850 so about 10% in most and more in multi threaded apps.
Your northbridge will be fine as I run mine on a 1333MHz FSB 24/7 and my P35 chipset is rated at 1066 but can OC to 1333 which I have done.
Also try a 1:1 FSB satio. So the memory should be set at DDR 667MHz which will give you a 1333MHz FSB to the memory and thus a 1:1 ratio which is normally much more stable.
Actually I have the same RAM in my PC right now and its running at a 1:1 FSB ratio. Check my sig it has my CPU-Z validation. Funny thing is its just Corsair XMS DDR2 PC 6400 but tested to be able to be rated at PC 8500 and needs 2.1v. I was also lucky to be able to get mine stable at 4-4-4-12 timings instead of the normal 5-5-5-18 timings.
As for the FSB, it will because the FSB will push the data through faster. I wouldn't be able to tell you exactally what the difference is as I OCed my Q6600 the day I got it so I never compared but its probably 5-10%.