P4 Overclocking Question

[Chrispy]

My setup:
P4 2.4 SL6WF (Cooled with Thermalright SLK-948u)
2x 256MB Kingston HyperX PC4000 @ 3-4-4-8
Asus P4C800-E Deluxe

I have a few questions for people with similar setups...

What should I have my CPU Vcore set at for optimal performance
Should I leave DDR Frequency at 400MHz, or should I change
Should I leave my DDR Reference voltage at 2.85? I have already done the VDIMM mod....

 

[OneMadPoptart]

Vcore has nothing to do with performance. You up the stock voltage to get the proc to run stable at a given speed. Don't change the stock voltages until you start to run into stability issues when overclocking.

You should not leave your memory frequency at 400mhz. When you overclock, keep a 1:1 divider as long as possible. This means that your fsb would equal your memory freq and give you the best performance.

Vdimm voltage should stay stock until you run into stablility issues, ie running 1:1 with the fsb at high clockvalues. Thats a quality bunch of ram there and you shouldnt even have to bump up the voltage until your proc is overclocked quite a bit.

 

[Hades16x]

crock of shit

set agp/pci locked to 66/33
set ram 1:1
set ddr voltages to 2.9v
set timings to 2.5-3-3-6
set core to 1.550
set fsb to 250

there you go your at a stable 3 ghz

 

[OneMadPoptart]

Everybody gets different results. How can you say that these settings will work for him when the work for you?

His question was simply whether raising voltages raise performance. The answer is no. Plain and simple. Voltages are raised when overclocking to gain stability, but are only raised when you need the extra stability.

Overclock your fsb at 1:1 with your ram as far as you can in small increments until you run into errors. THEN play with the voltages.

 

[Hades16x]

I unno i jumped straight to 250 fsb because that was what everyone was getting

I though his stepping was the best stepping so far and ppl are getting the 300mhz fsb's on air

Ill put money down his system will do 250 fsb

 

[Chrispy]

Originally posted by Cloud15x
I unno i jumped straight to 250 fsb because that was what everyone was getting

I though his stepping was the best stepping so far and ppl are getting the 300mhz fsb's on air

Ill put money down his system will do 250 fsb

It does actually, it runs 250FSB effortlessly, even without changing any of the voltages....

 

[mewannafastpc]

Originally posted by OneMadPoptart
Everybody gets different results. How can you say that these settings will work for him when the work for you?

His question was simply whether raising voltages raise performance. The answer is no. Plain and simple. Voltages are raised when overclocking to gain stability, but are only raised when you need the extra stability.

Overclock your fsb at 1:1 with your ram as far as you can in small increments until you run into errors. THEN play with the voltages.

i agree with this answer because it teaches the thread starter how to approach overclocking. not just jumping in and do what everyone else does. you can kill your chip that way you need to take small steps at a time

 

[OneMadPoptart]

Originally posted by mewannafastpc
i agree with this answer because it teaches the thread starter how to approach overclocking. not just jumping in and do what everyone else does. you can kill your chip that way you need to take small steps at a time

Thank you for the support. Overclocking is not something to be taken lightly. It reduces the life of your components, and many people end up having to buy new components ($$$) just because they dont go slow and find out what works for them.

Do yourself a favor and take it easy on heavy overclocking until you know your computer runs stable for a while at a lower overclock.

-OMP

 

[Duvie]

Originally posted by mewannafastpc
i agree with this answer because it teaches the thread starter how to approach overclocking. not just jumping in and do what everyone else does. you can kill your chip that way you need to take small steps at a time

While I agree you can't always jump right into it like that and especially for newbies, I think the killing the chip is highly unlikely with any of the settings he suggested. LOL!!!

No 1.55v is going to kill a P4 chip even on an overvolting pig like Asus mobos.....The heat wont be an issue due to the wonderful world of thermal throttling. More likely the system wont boot or fails to post into windows....KILL??? Highly unlikely with what he suggested....


For me I would and did jump straight to 250fsb....I however built the system with the finest ocing components and have been ocing P4's since the first northwoods and have had 6 different cpus oevr the last 2-1/2 years....

I would have said....

set agp/pci lock
set ratio to 5:4 (even though he has pc4000 not all ram has been shown to be compatable at all speeds and ratios on certain mobos.)
set cas to 2.5,3,3,8
set vdimm to 2.8v
set vagp to 1.55-1.6v
Under GAT I would likely disable or use an auto slection if available.


Then tried 250fsb out of the gate....I have not seen many if any p4c chips fail to make it to 3.0ghz that we later didn't find what was the limting factor.


I say keep memory out of the equation until we see the limit of the cpu. I have tested this elsewhere and sites have even shown this of recent that cpu mhz is often far more important then ddr speed...meaning don't stop at 250fsb and 3.0ghz cause your pc4000 wouldn't do more at 1:1...many have shown dropping to a 5:4 ratio could often allow further gains of 100-300mhz more and this in REAL WORLD test (NOT that sissoft crap!!!) often gives better performance. Often times yes you run your memory under stock speeds but that means you can maybe run it at cas 2 and cas 2.5 levels and this helps tremendously as well. I have seen 5:4 cas 2,3,3,8 stuff beat or equal 1:1 cas 2.5 and cas 3 stuff at same clock speed....

 

[mewannafastpc]

Originally posted by Duvie
d have had 6 different cpus oevr the last 2-1/2 years....

why do you change out your cpus so much, i thought the point to overclock was to delay upgrading.