Need help : X1900XT cooled with Mach II GT does not work!

[passionne]

Hello,

I installed my ASUS X1900XT and cooled it with a Mach II GT and I have the following problem : the PC boots normally, the screen is displayed but as soon as the Mach II head temperature reaches about -40°C, the screen becomes light blue. In the Catalyst 6.2, the temperature indicated was 120°C, probably a bug temperature when it is too low.

Then when I waited a few quarters and restarted the PC, the graphic card worked but the phenomenon happened again.

For the insulation, I was very careful : nail varnish, seal string and neoprene or dielectric grease all over the graphic card and on the motherboard DFI Lan Party nF4 SLI-D.

I switched of the 2 following ATI services : ATI Smart and ATI Hotkey.

So, is it the cold bug which affects my card in particular ? Or a driver bug ?

I would appreciate your help very much.

Thanks.

[W1zzard]

there is a driver bug + the card cant go that low .. try around -20 to -30 °C

[Dynamic]

Dude that is some KILLER temps on that BEAST! Don't go crazy overclocking it, because a $600 dollar video card killed is a NO NO.....

[passionne]

Unfortunately, I cannot choose the Mach II GT head temperature.

But on nordichardware site, they managed to cool a X1900XTX with nitrogen and the temperature was below -40°C.

[Dynamic]

I've noticed Phase cooling and nitrogen on these new R580 with crazy overclocks, but not sure what the deal is with your setup? If there is a bug in the drivers, they must of tweaked something to get rid of it, don't you think?

Note:BTW, that is a nice system you got there. Got the same board, but modified instead of the old NF4-D that i have. Have you overclocked anything related to CPU/RAM as of yet? That OCZ kit you got there a P.E. or GOLD Edition? You might be able to overclock that bad boy to around 260+.

[passionne]

I've noticed Phase cooling and nitrogen on these new R580 with crazy overclocks, but not sure what the deal is with your setup? If there is a bug in the drivers, they must of tweaked something to get rid of it, don't you think?

Note:BTW, that is a nice system you got there. Got the same board, but modified instead of the old NF4-D that i have. Have you overclocked anything related to CPU/RAM as of yet? That OCZ kit you got there a P.E. or GOLD Edition? You might be able to overclock that bad boy to around 260+.


Only the Catalyst 6.2 are said to be compatible with the X1900 series. So, if my problem is caused by this driver version, I won't be able to solve it.

I already overclocked the CPU and RAM with the mach II GT : I obtained 3000 Mhz on an AMD X2 4400+ and the RAM OCZ ran at 255 Mhz, with a divider. Unfortunately, in November, I had a condensation problem and the motherboard and the OCZ Powerstream 600 W were dead, due to a short-circuit. So, now, I insulate the maximum as soon as I use the Mach II GT.

If I finally manage to solve the problem with the X1900XT, I may buy a second Mach II GT for the CPU.

[Dynamic]

That's good to know and good luck with your toys. You did have WARRANTY on those two components that short-circuited right? If not, may we say our prayers.....

[yogurt_21]

as i was told most x1xxx cards have a cold bug on the stock bios, might wana try the same bios as the nordichardware guys, shoot them an email and see what they say about it.

[ivaj]

Why have you done that? x1900xt is not enough?, do you realy need to do this kind of experiments? I had bad experiences with water cooling and I will never try again to do experiments with expensive hardware, when I see photos with a lot of pipes going up and down of computers I remenber mi "worst live experience".

[15th Warlock]

Why have you done that? x1900xt is not enough?, do you realy need to do this kind of experiments? I had bad experiences with water cooling and I will never try again to do experiments with expensive hardware, when I see photos with a lot of pipes going up and down of computers I remenber mi "worst live experience".

This is not water cooling, this is one of the best phase change coolers around, but he has to be very careful with condensation though...

[yogurt_21]

but he has to be very careful with condensation though...
luckily witha vga card, gravity helps a bit lol granted his case doesn't flip the mainboard. but most people who can afford the mach2 will take the time to read up on it before applying it, I doubt it's the first time he's mounted one lol.

[passionne]

as i was told most x1xxx cards have a cold bug on the stock bios, might wana try the same bios as the nordichardware guys, shoot them an email and see what they say about it.

It is a good idea. I contacted them and I am waiting for a feedback.

[ivaj]

Yes I know it's a phase change cooler, Is for consensation I think Is more dangerous than water, phase cooling + bad isolation = uncontrolable water, and water killed my mother board :cry: :cry:
Good Luck.