Merging Rail on power is safe?

[Skull Knight]

Hi ive been with a problem today i just receive my new 1900xt but it dont want to work when i install the driver. Ive done some research and so far what seem to be my problem is that my power supply is in 2 rail of 18a each and the gfx want 30 amp on 1 rail.

my psu is the 600w version of
http://www.seasonicusa.com/s12.htm

so: 30a 3.3v
30a 5v
+12 18a
+12v2 18a

Ive done some testing and i got one idea i wanted to try if if do some kind of wire that will Merge rail 1 with rail 2 will it work or it will go in smoke.

Thank for info

[Istasi]

That PSU should have no problem with a single X1900XT, afaik...

[Skull Knight]

thank for reply but i think i havent gave enough explication maybe on prob:

after i install driver windows boot all go fine until it load desktop where the graphic card seem to reboot (fan shut off and restart full speed and to finally slow down) i can get some image if i unplug monitor and replug it after but the screen is all artifacted and i see vpu recover error.

ive tested some drivers 6.7-6.9 ati and omega version of each.

[[XC] Lead Head]

If the red lights ARE NOT on, on the GPU, its getting enough power..It sounds like your GPU is just fried

[xenolith]

Hi ive been with a problem today i just receive my new 1900xt but it dont want to work when i install the driver. Ive done some research and so far what seem to be my problem is that my power supply is in 2 rail of 18a each and the gfx want 30 amp on 1 rail.

my psu is the 600w version of
http://www.seasonicusa.com/s12.htm

so: 30a 3.3v
30a 5v
+12 18a
+12v2 18a

Ive done some testing and i got one idea i wanted to try if if do some kind of wire that will Merge rail 1 with rail 2 will it work or it will go in smoke.

Thank for info

Are you referring to ATI's spec recommendation of 30 amps on the 12v rail? That's a combined maximum, not for each rail.

One ATI 1900 series card consumes ~120 watts under load. That PSU should have no problem handling that.

I'm with Lead Head, you probably have a bad GPU.

[Skull Knight]

hum so i was wrong worrying about my psu. But for the momment the problem go back to my gfx, but can it happen that gpu work on windows default but when the driver is on because it clock the the gpu too high for it spec (as a defect one) But windows driver is low enough to make it work?

also thank alot for reply.