Need Help with X800GtO2

[Pekkie]

Hi,
I have a problem about my X800GTO2.
First I used it by Air Cooling and I overclocked it to about 580/640, if I bring it up more the screen it's always going to be frozen.

So I decided to use water cooling, but I was really surprise because the temperature is down about 4c but when I run ATITool and try to find max core.

The same problem occured, the screen is frozen when core speed is about 600/640. I don't really know why, the GPU is a little bit cooler but why it can't go up any more.

Somebody please help me...

P.s. I flashed X850XT PE Bios
P.s I use Termaltake Waterblock

http://www.xtremesystems.org/forums/attachment.php?attachmentid=42090&stc=1&d=1136866844

[Pekkie]

Or do you guys have to way to mod Voltage for this card???

[drunkenmaster]

check the xtreme mods section, lots of gpu mods in there, def x800 based voltage mods in there.

as for clocks, could well be voltage limit, or limit of core maybe. with watercooling, well i can't really tell what kind of tubing it uses or what kind of rad you're using but generally with any semi decent watercooling you should be able to get very much lower temps.

[Pekkie]

check the xtreme mods section, lots of gpu mods in there, def x800 based voltage mods in there.

as for clocks, could well be voltage limit, or limit of core maybe. with watercooling, well i can't really tell what kind of tubing it uses or what kind of rad you're using but generally with any semi decent watercooling you should be able to get very much lower temps.

Thank you very much, I'm a new member. I don't really know where I suppose to ask.

My temperature drops only 4c,because I connect it with CPU Waterblock too.
My pump is about 900L and my tubing is 3/8. And My radiator is Danger Den Black Ice 3 Fans.

I think I need a new pump???