View Full Version : 7800 GT w/300W PSU (19A +12v rating)

10-03-05, 09:48 PM
Been doing a lot more reading about the 7800 GT, and I would like to eventually get one. My PSU is rated for 300W, however the +12v rating is a better-than-I-expected 19A. Would this be sufficient, or would I be better served going with a 6800 GT or Ultra? TIA.

10-03-05, 11:05 PM
The 6800 your find to be more of a power hog IMO, if I were you if your going to go for a 7800GT, personally I would wait till I could afford a new PSU. They are very good cards, and outperform the 6800 Ultra that I use to have.

10-03-05, 11:18 PM
All the newer uper range cards needs a lot of power to really work right ,A power supply is one of the most important part of a computer IMO since it takes it to have everthing to work proper so if you are planing on getting a 7800GT I would recomend upgradeing you power supply to the best you can get,I would get one with at least 30amps on th 12v line just for future upgradeing.

10-03-05, 11:31 PM
Just curious, but why are you using such a low end PSU? 19A is actually really good for a 300W, but it just seems odd that youre using such a low wattage PSU in such a nice system.

I have an Antec True Power 430W (20A on the 12v) and it seems to handle everything just fine in my system... and I remember hearing that the 7800s use less juice than the 6800s so youre probably good to go.

10-05-05, 06:56 AM
Also keep in mind that 19 A on 12v rail might be a mixed bag. If you put too much stress on the 12V rail the 5v and 3.3 rails will go all screwy on ya.
I think it will work but you can't be sure. If OC that CPU with loads of juice that PSU will go down i am pretty sure. (I had way better PSU's die. :D )

10-05-05, 07:06 AM
Minimum for 7800gt is 20A.
Recommended 26A.