Trying to get 1:1 Ratio can you help?

[badnewcastle]

Here's specs...

Thermaltake Toughpower 700w
MSI P6N Diamond
C2D E6750 @ 2.667

Currently running stock HSF but will likely put a better one in just to be safe.

Has been able to run the 1:1 with memory running @ 533mhz? And what will the cpu be bumped up to if I bump the FSB up?

 

[myocardia]

Originally posted by: badnewcastle
Has been able to run the 1:1 with memory running @ 533mhz?

1:1 with your processor is 333 Mhz/DDR2 667.

And what will the cpu be bumped up to if I bump the FSB up?

It will be whatever FSB you tell the motherboard to run, times your CPU's multiplier. Assuming you leave your CPU multiplier at it's stock setting, that # will be an 8.

 

[badnewcastle]

Would there be any point then, to run this?
1:1 = 533:533 with a multiplier of 5? That would keep roughly the stock speed of 2.66 and would run the 1:1 @ 533?
or
1:1 =533:533 with a multiplier of 6, don't know if it will be stable to run @ 3.2... or even if.

Also, don't know if my mobo or processor can stay stable @ 533...


Thinking the best thing to do might be (if cpu will stay stable/cool) FSB 400: 400 MEM and CPU 3.2Ghz

 

[amenx]

IMO best to keep your multiplier at 8, less stress/heat on your NB. You will get a very slight increase in performance at a lower multiplier but its not enough to be worth it IMO. Never mind the ratios on C2D systems, its not like AMD. Your CPU has a 1333fsb (667 x2) and your Ram is rated @ 1067 x 2 (DDR2), so it were running 1:1 (8 multi) your CPU would be at a 2132fsb which is a rather big OC (around 4ghz). You have to underclock your RAM for a more typical OC, this would allow you to tighten your timings as well, but with C2D tight timings dont have as big an effect as with AMD systems.

P.S. what are your mem ratio options, I think you need to have it @ 2/3 (667/1066), then you can OC by adjusting the CPU Host Frequency to 400fsb, I think then it would give you 3.2ghz.

 

[badnewcastle]

Ok, I'm seeing in some other threads that 3.2 isn't that big of an OC for my processor... is the performance increase descent or worth it? Would then run 1600 FSB (400Mhz). And would tighten timings and lower ram to 400Mhz...

 

[amenx]

3.2ghz is a typical OC for this chip, but read the P.S I added to my earlier post. Good luck.

 

[amenx]

BTW, be careful not to confuse the numbers, in my Gigabyte (Award) BIOS which I think is similar to yours, there are these:

CPU Host Frequency : 400fsb (example) - this is what you would adjust for your OC., x 8 (default multi) would give you 3.2ghz

System Memory Multiplier: this is your memory ratio adjuster (mine is 2x, 2.5, 3, etc, where 2x = 1:1, 2.5 = 4:5), yours may show differently, like 1:1, 4:5, 2:3, etc.

Memory frequency. Your default mem freq for your (high performance) RAM is 1066. Make sure it reads 667, this will mean its set at a 2/3 ratio.

 

[badnewcastle]

I was able to get 1:1 with FSB @ 400(1600 in my bios) and mem @ 400, CPU @ 3.2ghz...

But it stalls, I loose control of keyboard/mouse and the screen freezes... Any ideas? It loads into windows.

 

[amenx]

OK, just looked for some info on your board and (as an Nvidia chipset) its bios is way different than mine, so disregard my last post. Have a look here:

http://www.pcstats.com/article...?articleid=2182&page=4

so should read fsb clock: 1600mhz and mem clock: 800, (multi = 8), that would have you your RAM at a 4:5 ratio (800/1066) for a 3.2ghz OC.

I cant advise on your RAM timings/volts, its way different than mine, esp its high volts and which can be a factor in stability. But since you would be underclocking it, make sure its set at its default volts (whatever it is).

I assume your default CPU voltage = 1.325 - 1.35v? So you might need to tinker with that at .025v increments. Best really is if you can find someone with your exact board or at least with a 680i chipset board with similar BIOS settings to advise you further. Good luck.

 

[badnewcastle]

Thanks for all your help amenx, I'm trying to find someone that has my mobo... the main problem I'm having is I don't know how to change the voltages on my mobo, it seems they are all in gray and I can't change them. But I will keep looking. And Yeah the CPU voltage is about 1.32 or so...