the first thing and the most important is power on 12V rail. Other things saying about quality of PSU are efficiency,protections and stability, but you will not find stability in specification. Other things are noise level, modular cables and such but they are not so important

Sigh, stop confusing him, people. The power supply will definitely suffice, it's just a 9800gt

ok , then
i have a last question:?
is 980 gt ddr3 zotac will be compatable with the mother board XFX 630i/7100

Yes, it has a PCI-E 16x slot, so it will be compatible.

(10-20-2009 02:08 AM)rama Wrote:  Sigh, stop confusing him, people. The power supply will definitely suffice, it's just a 9800gt

The 9800gt is power hungry for being so weak, it has a tdp of 105watts, the 4850 has 110watts. I've also seen 580watt psus with like 16a max on the 12v rail.

(10-20-2009 02:08 AM)rama Wrote:  Sigh, stop confusing him, people. The power supply will definitely suffice, it's just a 9800gt

He's got a 300W PSU, the chances of it being decent are slim already, and I'd use at least a decent 400W for a 9800GT anyways...

And it's still just a 9800gt, it WILL work.

The 9800GT has a recommended requirement of 26 amps on the combined 12V rails. If his current PSU is an old PSU from the P4 era (chances are pretty high considering it's only a 300W PSU), then most of the amps are on the 3V and 5V rails, since they were more heavily used in P4 era machines. It won't have enough amps on the 12V rails.

True that, but I doubt he runs a nForce 630i with core2 cpu on a "advertised as" 300Watts psu.
I mean, those are from 4 years earlier

Au contraire, if you look in his other thread(s), eg. http://forums.pcsx2.net/thread-11008.html :

Quote:XFX 630i/7100
core 2
duo (2.93/3m)
2 GB of RAM
power supply 300 watt (300 real)