Problem Overclocking X1950XT

L

Luke2

Member
Hi - I have HIS x1950xt with TR HR-03 cooler http://www.newegg.com/Product/Product.asp?Item=N82E16835109134
The temps are under 70C in full load
I use ATitool 0.26 for overclocking - but everytime I try to overclock the core for example - It's very unstable having to reboot the PC after about 2 minutes running the 3DView in ATitool(fuzzy cube)...
I did set the voltages higher - as you can see in the screenshot - the VGPU is on 1.5 and the clock is set to 681 (anything above won't even let me start 3dmark06) - it'd freeze right after about 3 seconds
The memory is set to 2000(effective) and I think I should have no problem running at those speeds

Other people reach 700 on the core smoothly...
So I was wondering what the problem could be and the only thing I could think of is that i son't have enough juice from my PSU - Even though I have this on it also - http://www.newegg.com/product/product.asp?item=N82E16817153037
My current PSU is Enermax NoiseTaker 485W Dual 12Vrails 33Amps Total
That could be the only problem I'm thinking of - or AM I WRONG ???
Please Help

Here is rest of the rig
I got AMD 64 3700+ San Diego @ 2.6
2x1gig Corsair Valueselect DDR400
85GB 7200RPM WD HardDisk
Epox 9npa+ultra
SB-24bit Live
DVD burner

Thx for replies
 
Just because others have hit 700 doesn't mean that you will be able to. Each core that is produced is different.
 
okay but the card should be capable of overclocking at least a bit - I mean I put the core on 650 and it craps out...
 
Does the new PSU help with the overclock? I've been having some trouble with overclocking my X1900XT but I think my PSU is fine.
From what I can tell, I think I just got a crap core.
 
The only reason it would help is if your power supply was a piece of junk before, and was not putting out steady voltages.
 
wow.. just because a PSU isnt putting out a fully steady voltage doesnt mean its bad. it could be that it just delivers more power than it was actually supposed to deliver, hanve making the voltages of the lines vary too much.

But yes, if the powersupply doesnt deliver voltages steady enough, the CPU's or GPU's wont be able to run stable.
 
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