Abit A8N Ultra & OC

S

stone

n00b
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Jul 22, 2004
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I have an Abit A8n Ultra with silent otes and having lots of problem Oc'in, basicaly,i think the heatpipe on the chipset just dsnt cut it and the heat coming from my 7800gtx doesnt help.

My idead whas this: first put an nv silencer on my 7800gtx,second,putting a 40mm fan on the chipset.

Thing is i have no idea how i could fix a 40mm fan on the chipset heatsink(s-otes) since it's suppose to be fanless!

You guys have ne idea??

Second question: i have Ocz pc4000 Vx dual channel 1gb kit supose to do 2-2-2-8 at 3.3v and was wondering: does Oc my X2 cpu mean that i absolutely need to relax the timings on the ram?Maybe a dumb question,but didn find much info on that in Oc'in litterature.

Spec as follow:
Antec P-160 with 2x120mm fan(intake and outake)
Antec Smart-Power 2.0 500w
Amd X2 4400+ with stock cooler
Ocz Gold pc4000 Vx Dual Chanel 2x512mb
Maxtor 250gb S-ATA 7200rpm with NCQ
PX-716 DVD burner
Asus 7800gtx running at BFG speeds
 
There's no such thing as an Abit A8N. That's an ASUS. I think you've gotten yourself an AN8.
Second. Just use rubber bands or something to clamp the fan right next to that huge heatsink that is on the end of the heatpipe, over near the back of the board.
Third. Dont relax your timings. That RAM is designed to run at those timings, and will more than likely not get any higher overclocks with looser timings.
Fourth. It's designed to run at PC4000, which is 500Mhz in DDR, or 250 real-world Mhz, which mean you're going to have to raise the LDT frequency of you're X2 to get it to it's rated speed. LDT is sort of like what FSB was in the Athlon XPs (not correct, but it's an easy analogy). Therefore, you will have to raise the LDT frequency to 250Mhz to reach the rated speed of this RAM. Whether or not you can do this on stock cooling remains to be seen, but I wouldn't think it would be all too hard.
 
the silent otes has a heatpipe that goes to a heatsink on the io panel. put your fan on that heatsink and see what happens.
 
While the fanless heatpipe cooler will get rather warm...abit says "normal" to see load temps of 75c to 85c....on the mosfets right above and to the left of the cpu...the chipset should not suffer issues if your case has decent airflow.

When I was water cooled on this board, the mosfets got HOT, but NEVER suffered stability issues...you can mount a 40mm fan directly to the heatsinks on the mosfets....old school screw straight between the fins....works wonderful.

I am back to air for the moment, and the secondary flow from the cooler keeps the mosfets a few degrees cooler than my cpu...
 
also, at 250, make sure your HTT multi is a 4x instead of 5x. try to keep HTT = 1000 or so (LDT x Multi).
 
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