Abit AT8 32X HTT voltage problems

palindrome

Senior member
Jan 11, 2006
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*Update* 6/27/06 - I'm now using an OCZ GameXStream 700 watt PSU and I still have the exact same problems. I think my only conclusion now is that this motherboard is either faulty, or Abit is total crap for overclocking. To make a long story short, this mobo won't break 2.6 ghz (stable or otherwise) with ANY multiplier using my opteron 165. This is a proven chip, as stated below, that will easily do 2.7ghz on stock cooling. My CPU voltage doesn't seem to dictate my overclock at all. In fact, unless I bump the voltage on the 1.8V NB and HTT, I can't overclock above 2.2ghz. Abit denied any problems with this motherboard and told me never to overclock.

Are there ANY Abit employees on this forum?

*Original Post*
I have an opteron 165 that I had previously in a MSI K8N Neo2 Platinum and it OCed to 2.7ghz without breaking a sweat on air cooling. Now as I installed the AT8 32X, I tried to repeat my overclocking success on this board to NO avail. After playing around with my vcore and realizing that it wasn't doing a darn thing, I got the bright idea of reducing my HTT voltage and see what happens. Keep in mind at this point I'm running 271x9 @ 1.4vcore and 1.4 HTT voltage. I bumped the HTT down to 1.35V, no post. Ok, well then I changed my FSB frequency from 271 to 255 at 1.3V HTT, it posts no problem. After playing around and making sure I wasn't imagining things, its very clear that the HTT voltage at 1.4 will only allow my FSB to be around 270. I tried using uguru in windows and its an instant lockup. I have experience OCing and I have made sure my ram is not part of the equation, its at DDR200 and 2.5-3-3-7 timings, its rated for 2-3-2-6 at DDR400... Anyhow, any help would be appriciated, I just need to figure out if this is defective or if a bios update will solve my problem.
 

Heidfirst

Platinum Member
May 18, 2005
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it comes from several people who own it ( I currently have an AT8).
All the current RD580 boards have/had some kind of BIOS problems at launch - that's a minor 1 compared to some.
 

palindrome

Senior member
Jan 11, 2006
942
1
81
Well, after doing some burning in, I was able to get up to 284mhz FSB, ONLY after raising the NB 1.8V to 2.0V. It seems that I'm dependent on both the HTT voltage and the NB 1.8V voltage. The CPU wants to OC more more more! Also, I'm buying a couble of 40mm fans to cool the PWM and NB, this should help greatly when I have these voltages put up there.
 

palindrome

Senior member
Jan 11, 2006
942
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Sorry, I almost forgot to thanks you Heidfirst for replying! Thanks, dude. Also, isnt the AT8 non-32X limited to like 256 fsb right now?
 

snor

Senior member
Feb 3, 2006
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for my AT8, i can get like 315 fsb, so your case might be a bios issue or setting
 

palindrome

Senior member
Jan 11, 2006
942
1
81
i've only found 1 guy on the internet able to hit anything above 283 (what i'm running right now) FSB, and he is on a water block.... I'm coming to find many have this problem