OC question

Aastii

Aastii

VIP Member
I have just started overclocking my system and just noticed that there is an option to keep the CPU and RAM linked, so you put the FSB speeds up and it puts the RAM speed up in proportion aswell. So i went from 1333 FSB to 1340 as my first increment and my 800MHz RAM went to 804MHz.

Should i use this option or do the RAM manually aswell?

If i should do it manually how should i raise my memory speeds in proportion to my CPU speeds?
 
I would keep them separate. Start just by OCing the CPU and find the max stable speed that your cooling will allow. After that I would then start OC'ing the ram. If you hit a wall you could try loosening you timings and that will help you OC the ram more. The biggest performance increase that you will see though will come from overclocking your CPU. Anything extra you get from your ram is just icing on the cake.
 
THERMAL-REACTOR said:
I would keep them separate. Start just by OCing the CPU and find the max stable speed that your cooling will allow. After that I would then start OC'ing the ram. If you hit a wall you could try loosening you timings and that will help you OC the ram more. The biggest performance increase that you will see though will come from overclocking your CPU. Anything extra you get from your ram is just icing on the cake.
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Alright thankyou very much for the info :)

For the RAM what steps should i step it up in? For the CPU in about 5-20ish MHz intervals, but what about memory?
 
Aastii said:
Alright thankyou very much for the info :)

For the RAM what steps should i step it up in? For the CPU in about 5-20ish MHz intervals, but what about memory?
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I would try to get atleast 100mhz out of it. With my 1600 ram I've hit 1930 with them. You should use Prime95 to make sure your OC is stable (found here). If you can run this for a couple hours it should be fine. Also keep an eye on your temps with Realtemps I am not sure what the temps are like with your processor but a google search should be able to answer that for you.
 
on the p5k deluxe you can manually control the ram speed, by just entering your desired speed. is it not the same with the P5Q? i completely unlock the ram and FSB, its just a hinderance. your best bet is to lower your multiplier, overclock the fsb to 1600mhz, and keep your ram at exactly 800mhz. that will give you a 1:1 ratio to your FSB, giving you the best performance without a real overlclock on the ram.

hell i would give it 1.36V and try for 400fsb, with an 8x multi. that'll give you 3.2ghz fairly easily.

honestly, stepping the processor up in small increments is unnecessary. sure every processor is different but hell just bump the fsb, then continually bump the voltage untill it is stable. so much faster and plenty safe.
 
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THERMAL-REACTOR said:
I would try to get atleast 100mhz out of it. With my 1600 ram I've hit 1930 with them. You should use Prime95 to make sure your OC is stable (found here). If you can run this for a couple hours it should be fine. Also keep an eye on your temps with Realtemps I am not sure what the temps are like with your processor but a google search should be able to answer that for you.
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Thnakyou very much for the help and advice.

The Prime95 thing, could you tell me which test to use to best test my processor? And how long should i leave it running? an hour or 2, or overnight?

==400th post :D==
 
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i think that depends on what u call stability, thats a discussion already going on for ages :p

i usually run it for 2 hours, followed by 2 hours of occt, then i call it stable... I mean if its not stable, u will notice it during the usage won't u?

boonet
 
boonet said:
hi,
is there a possibilty to unlock your ram to fsb speeds on the P5Q pro?

boonet
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Not sure if it is the same as mine, but if you are on phoenix award bios then it may be the same thing:

There is a setting to change tuning, AI tuning, AI, it is always something along those lines, to auto, standard or manual. Auto=the "best (not overclocked)" that the bios will put it. Standard is the settings that are the stock bog standard settings and manual will let you choose all of the settings
 
Aastii said:
Thnakyou very much for the help and advice.

The Prime95 thing, could you tell me which test to use to best test my processor? And how long should i leave it running? an hour or 2, or overnight?

==400th post :D==
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I would forget about prime95. Intel burn test (IBT) or other linpack stress testing (I think OCCT has a linpack test) is much faster. If your CPU can do 30 passes of IBT it is pretty darn stable, watch those temps. I can run prime95 for 8 hours with no errors and then run IBT for 5 passes (20 minutes?) and get an error. But, to answer your question, before i started useing IBT I would let prime or OCCT run for 8 hours+ to test cpu stability. While I run OCCT once in awhile for fun I really only stress test my cpu with IBT and RAM with memtest86+. I don't OC my RAM but I love to get those timings reeeeaaaal low. And I run memtest for 8 hours+. The only benefit to prime or OCCT is you can still use your computer when they are running. With IBT the computer is not as usable and memtest is run from a boot disk so yah.

edit: small fft's i think it is called?? The purpose of a larger data set is to test RAM at the same time. A small data set focuses on the cpu but all the tests will stress the cpu.
 
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yeah ibt is much faster, but the problem are the temps... it gets so hot when u run it...

still im going to try it now and see the differences.. i am running prime for 6 hours stable, im going to see ibt... In prime max core temp is 71, lets see in ibt...
 
boonet said:
you see, i get temps around 92-92- 87-86
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c? Those are dangerous temps. I am giving you a cease and desist order with that OC right now! What is your OC at and what do you have for cooling? I recommend you drop your OC back until you can get better cooling.
 
Thanks for the info on IBT, i will download now, only used prime so far (as i said in my other post) but if IBT is better and quicker, i will give it a whirl, but keep speedfan up to keep a close eye on temps
 
Aastii said:
Thanks for the info on IBT, i will download now, only used prime so far (as i said in my other post) but if IBT is better and quicker, i will give it a whirl, but keep speedfan up to keep a close eye on temps
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When I am in the midst of OCing and stress testing I turn off my smart fan control in bios. All this does is cause the cpu fan to run at 100%. Once my desired OC is reached and stable I turn the smart fan option back on for noise control.
 
i am running a q 9550 at 4 ghz with 1.38125 vcore, my cooler is scythe mugen 2, but what i saw when i took it off was that is was a diagonal pressure surface.... so it was diagonally touching the ihs, but not on other 2 corners...

with prime my temps are max 77-77-70-70, so two last core are much more cooled... and from what i hear is core 0/2 together and core 1/3 together... and 3and 2 are good cooled, but 1 and 0 not.... Do i maybe have to lap it?

i am using ibt at maximum stress test, then my temps on first 2 cores hover from 92 to 88...

thx
 
I have just run IBT and that too went to 66 degrees, so i think that that is the highest possible temperature it can get if both a so-so test and an uber stressful test both put it to that point.

Also, i don;t think that cooling is much of an issue because from the second it stops the temps drop very very rapidly, as in from 66 to idle within 4-5 seconds, i watching it go 66, 50, 35, 30 with 1 sec refresh in between each temp update, so i think that so long as no damage is caused by it being at 66 degrees i think it should be ok
 
Aastii said:
I have just run IBT and that too went to 66 degrees, so i think that that is the highest possible temperature it can get if both a so-so test and an uber stressful test both put it to that point.

Also, i don;t think that cooling is much of an issue because from the second it stops the temps drop very very rapidly, as in from 66 to idle within 4-5 seconds, i watching it go 66, 50, 35, 30 with 1 sec refresh in between each temp update, so i think that so long as no damage is caused by it being at 66 degrees i think it should be ok
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you said it was 66 degrees and you haven't overclocked yet. that means that if you do overclock, its gonna hit 75-80C with no problem whatsoever. it doesnt matter how fast it came back down, it matters that it went that high. with your current cooling i wouldnt risk overclocking at all.
 
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