New rig - 7800GTX issues :(

[aNabolic]

Hi all,

I have a new rig that consists of DFI Ultra-D, X2 4400+, 2GB Ballistix Tracer and a BFG 7800GTX.

I have a Vapo LS on the 4400 wich runs fine, the issue I have is the water/80W tec on the 7800.

Since I built the rig I have been unable to run RTHDRIBL or any 3d game for longer than 5 minutes, infact RTHDRIBL froze the system straight away, starting with a screen lock, then freezing the mouse and rebooting. Funny thing is I can complete 3dm03 all the time.I must add that the temp was always stuck on 31C.

I left it a bit then tonight I decided to install one of the 7800 BIOS's listed on here, first it was the one with the temp mon enabled. booted up checked temp and it was listed as -4c (Very cold), tried RTHDRIBL and it locked. Rebooted and ran 03 to "warm" it up, then ran RTHDRIBL and it then ran ok for 20 mins until I stopped it. mmm.. I thought. So I then installed the cold fix bios, which locked the temp at 31c (So I guess the stock bios already had the "fix"), ran RTHDRIBL and it locked again. BUGGER

So I rebooted, unplugged the TEC, watched the temp go up to around 65c then ran RTHDRIBL, ran fine first time and is still running now as I type, temp was rising. At 85c I plugged the TEC back in. Now the temp is back at 31c so I guess its below threshhold.

So the question is Why ? It seems that having the GPU to cold causes issues with certain 3D apps. Although 03 runs fine. Is it my card or is there something I should know? Is it an RMA job? - 2d clock is 275, maybe I should set it the same as the 3d core clock like my 6800U ? wich never had these problems with same water/tec setup.

Can anyone help me please, I have never had this "To cold issue" and im not sure what to do about it.

Thanks for any info you can give,

Brett

PS, sorry for long post.

[einCe]

pretty sure its the cold bug, if you look around you should find the bios that fixes it.

[aNabolic]

pretty sure its the cold bug, if you look around you should find the bios that fixes it.

Thanks for the reply, TBH I tried most of the BIOS's available and still no joy.

No matter though, Ive got rid of the TEC and installed a Swifty MCW55 Block. Im more than happy with this at the moment. idle less than 31C(Bios restrict) load about 40-45 wich is sweet. running stable at 520core so far.

Also at 260FSB on my X2 4400+, need some tweaking of the ram (Ballistix tracer) to get a stable prime above this, multipliers I guess. Everything is stable at 270 but Prime fails first test.

I now LOVE my new rig, with this DFI, CPU, GPU, RAM and the new Enermax 600w Noistaker I bought I have a whole lot of tweaks to do yet. At the moment 260 1:1, with 520 on the gpu is rock solid.

Been a P4 boy for a year though, need to get used to this DFI board with all its weird AMD technobabble ;)

aNaBolic