View Full Version : Need Overclocking Advice
Okay so I've gotten all my parts in and my computer set back up, watercooling and all! Now comes the overclocking. Well I still can't push my Cpu past 250fsb, even with 4-8-4-8 mem timings at 5:4. So now I'm running at 205 at 2-3-2-5 1:1 stable. I'm really not sure what to do. I'm running a P4C800-E Dlx/P4 2.8C D1/2x512Corsair 3200LLPRO. Any advice/suggestions would be greatly appreciated. Thankyou.
I thought the Vcore should only be upped for stability. My system won't even post at 250.
What will it do stable? Hitting 250 FSB with a 2.8C is not always possible. Certainly it will require higher than default vcore.
What will it do stable? Hitting 250 FSB with a 2.8C is not always possible. Certainly it will require higher than default vcore.
What ram would be a good loose setting so that I can try and push my fsb as far as I can.
I'm also wondering is a 2.8 oc'd to 3.2 faster than a 3.2 stock? because of the higher fsb?
With PC3200 RAM, you'll need to use the 5:4 ratio above a certain point anyway, so you'll be in spec all the way up to 250 FSB. So, there's no reason not to use the SPD RAM timing setting while you are sorting it out. Sometimes, you can have timings too relaxed, especially with low latency RAM like yours.
Yes, a 2.8C running at 3.2 gig is faster than a 3.2C at default speed. Higher FSB rules.
I thought the Vcore should only be upped for stability. My system won't even post at 250.
it won't post because its super unstable ;)
I thought the Vcore should only be upped for stability. My system won't even post at 250.
This setup should post and run at 250 the other question is stabbility, You shold select in bios to run your memory at 5:4 ratio and you do this by selecting I think memory frequency 320, Up the voltage for memory to 2.7v and the vcore to 1.575 or 1.6v, also run timing of memory on default,
I had almost same setup as you expect my memory was hyper x 3500 it would never post at 250 at 1:1, I ran it stable at 243 with 5:4 ratio
Yes, 243 (3.4 gig) is probably a more reasonable goal and closer to average with the 2.8C. You will need to bump up vcore a little. Try 1.55v and see how high you can get with that. You need to take smaller steps in FSB. Trying for a giant leap is a recipe for failure.
Well I've gotten the system to post up at 238. I'm running cpu burn in on it at the moment. I'm wondering though. How great of an effect would my NB Temps have on overclocking? Right now I just have the passive Asus heatsink on it. I'm going to be putting my Swifty Air hs on it today.
Improving N/B cooling is never a bad thing. But, it's more important at higher FSB speeds. I would at least pull the heatsink off, clean it up, and reinstall with Arctic Silver. Then maybe install a 40mm fan on the heatsink.
Right now I'm running at 235fsb 1.55 vcore stable. I put my NB cooler on...wow talk about a tight fit, was glad it cleared the vid card pegs for my gpu waterblock. I always get scared when messing around with heatsinks while not having much room to work. Had to fit my hands in between about 4 thick wall 1/2" ID tygon line. Well I guess I didn't mess it up, it's running about 7C cooler now.
P.S. I really think I just have a weak proc. With this setup I was able to hit 3.43 with a 2.53 533fsb proc. Kind of like getting slapped in the face when the computer I built for my sister overclocks better than mine :( Oh yeah, and that was on Air!
its not weak, its justa bout average, i can't even get 230 stable with mine.
Got it up to 237FSB, and went ahead and tightened up the Ram timings to 2-3-2-6. Does that sound pretty decent or should I loosen them up and take another crack at raising the fsb?
Siphilon
06-07-04, 09:28 PM
Up that vcore dude, that's why you have water ;-)
Sorry for sounding repetitious but consider it positive reinforcement.
:sn:
Up that vcore dude, that's why you have water ;-)
Sorry for sounding repetitious but consider it positive reinforcement.
:sn:
KK...well if I burn the proc out...I guess it will just give me an excuse to go get another right? :santa: Is comin to town!
lol yea then you can pick up a 3.0
but right now i think you can set the vcore at 1.58-1.6 and still be ok.
aNTiChRisT
06-08-04, 03:43 AM
Yes there is often a point that needs that little "bump"
My CPU runs below spec volts up to 3.6~ but if i want 3.8 damn it aint easy! Needs about 1.65v :/ but i suspect the stability issues could be to do with the RAM needing abit more volts -- its running hot already though :/
~t0m
Drop-Top
06-08-04, 09:13 AM
myhre, remember everything is about trial and error. I personally found the best way to OC is in steps. This way you push as many variables out as possible. Plus, in my experience atleast, gradually pushing FSB seems to work better. Start out at stock vcore, lock agp/pci, try to figure out some memory settings that seem to be working(factory settings). In your case having pc3200 you will need to set it 5:4 ration. Then just up the FSB a couple points at a time. Then run something in the backround with prime95 and check for 2 hours for stability. It won't catch everything in 2 hours, but it will give you an idea. Then just bump up as you see fit. If it gets unstable, bump up vcore. The hardest part IMO is memory timings. Sometimes memory is more stable at looser settings and vice versa with tighter timings. Also try to find out how much power your memory can take, so you know how hard to push it.
G'd luck oc'in
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