help oc my 4000 san d

shakka

shakka

shakka

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Joined
14 Oct 2006
Posts
5
amd 64 4000 sdiego
msi neo platinum 2
2 gig twinmos ram 3,3,3,8
500 watt enermax
6800 ultra oc

i can get it to 2.7
how much voltage can i add to the ram and cpu ?
what should i turn off ie:cool n quiet)in bios
how do i make sure graphics dont oc too ?
thanx.
will anything hold me back or do i have ocable hardware ?
 
What stepping is your chip?

If you have a KAB1E or simular stepping try this:

First of all you need to enable the PCI/AGP locks. There will be a setting somewhere where you can set it to 33/66MHz or on a PCI-E system 100MHz. You should also definatley disable Cool & Quiet.

Next drop your HT down to 4x, Run on a 333Mhz divider and try putting your FSB upto 250. If you do not have a KAB1E stepping chip, use a lower FSB to start with, like 230 and slowly increase it. Check for stability constantly using Prime95 etc.

Using the divider allows you to run your FSB at 250MHz and have your ram bang on 200Mhz, allowing you to easily achieve a 3Ghz clock speed. You should not need to change any voltages, except a small vcore increase on the CPU, and I mean small. Your motherboard should allow someting like .125v increcements.

Just remember to slowly increase cpu voltage and monitor stability and temperatures closely. Ideally you dont want a full load temp higher than about 52c on these chips.

Chris.
 
Use a divider to keep your memory at stock for now, so no need for additional RAM voltage.

I think general consensus would advise a core voltage of no more than 1.65v although I know many people who use 1.7, 24/7.

As celliott mentioned, it all depends on the stepping (most of the time). Some overclock better than others. I know someone who has an A64 4000 that is supposed to be crap for overclocking. He's running it at 2.8ghz now, with only a small increase in vcore.

Let’s hope you have a good one. Good luck :)
 
celliott said:
What stepping is your chip?
Just remember to slowly increase cpu voltage and monitor stability and temperatures closely. Ideally you dont want a full load temp higher than about 52c on these chips.
Click to expand...

That low?

I would have though anything under 60 at load is fine.

Mine doesn't break 49ºC :D
 
Yes thats correct.

As a 24/7 overclock you want your temps to be in a good range. I certainly wouldnt run one of these chips hotter than 52c under full load as a permanent overclock. For the sake of a few Mhz its worth running your chip within reasonable temperatures.

I am 90% sure that 55c is the Max suggested for these chips.
 
My kab1e @ 3ghz sits between 45-48 degrees at full load, idle is 35 degrees with 1.37v. Celliot explained it pretty well, just go steadily and test stability with prime and looped 3dmark or a good timedemo like farcry as sometimes a pc can be prime stable but not 3d stable. Run the tests for at least 8hours for real stability testing, altho if it is going to fail it generally will in the first 10mins.
 
celliott said:
Yes thats correct.

As a 24/7 overclock you want your temps to be in a good range. I certainly wouldnt run one of these chips hotter than 52c under full load as a permanent overclock. For the sake of a few Mhz its worth running your chip within reasonable temperatures.

I am 90% sure that 55c is the Max suggested for these chips.
Click to expand...

Fair enough, but as a 24/7 overclock, how often are you maxing out your cpu?

Didn't realise the suggested max temps had dropped so much, gone are the Barton days, hehe
 
Obviously im not maxing out my cpu all the time(I dont fold :p) but its still best to stay clear from the suggested limits on a cpu; it wont do you any favours gaming for a couple of hours or encoding something with your cpu sizzling away at 55c. Therefore id say 52c and below is fine for a permanent clock (Mine runs 51c).

And yes A64's are designed to run cooler than Athlon XP's so they have a lower max temp.
 
Celliott, are you on water? What voltage are you giving yours to get that 3.2ghz clock? Is your memory on a divider? Sorry about all the questions but that is an amazing clock. Can't wait for my new power supply to arrive so i can start clocking mine. :D
 
benchmarking now at 3.05

let you know how i get on benchmarking it now.
also amd say 65 degrees is ok so if running at 60 all day would that be too hot ? although at present it hasnt gone over 53 just added a64 freezer this week and i got raid ready to go.
 
TheOtherOption said:
Just got my KAB1E 4000+ to 3 Ghz on 1.525v - 40 degrees idle and about 50 odd on load :)

Thats doing 251 x 12
Click to expand...

Is that votlage really needed?

I do the same at 1.39 :confused:
 
celliott said:
Yes thats correct.

As a 24/7 overclock you want your temps to be in a good range. I certainly wouldnt run one of these chips hotter than 52c under full load as a permanent overclock. For the sake of a few Mhz its worth running your chip within reasonable temperatures.

I am 90% sure that 55c is the Max suggested for these chips.
Click to expand...


55c is not the max temps for these cpus. had mine running on a passive cooler at 75c constant temp at max load for overnight snm testing. amd themselves rate the max opterating temp on these cpus to be around the 85c range.

obviously the lower the better.
 
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