View Full Version : Do I have enough power?

09-05-07, 03:00 PM
Ok just a few easy questions that are PSU related.

I have a SeaSonic SS-600HT PSU its 600watt SLI ready dual 12v rail @ 18A each.

I have two BFG Geforce 6800 GT OC cards. They always seem to be shakey SLI and it ends up underclocking the card(s). Is this from lack of power?

I ordered a BFG Geforce 7950 GT OC card as an upgrade. Will that PSU have enough power to run 2 in SLI ?

Heres more specs on my system to help determine how much power I use.
Asus A8N-SLI Premium 939
AMD 4400+ X2 Taledo
2GB PC3500 RAM
DVD and DVD burner drives
Western Digital SATA II HD 250gb (SE 16mb)

I don't know if it matters.. but I have 6 80mm case fans and 1 cold cathode light.

Thanks for the replies and your input!

09-05-07, 03:03 PM
I would have though that would be more than enough power!

09-05-07, 06:02 PM
That seems like it'd be plenty to me.

I ran a 7950GX2 on both a 500W dual rail Antec PSU (17a and 19a) and for a short time on a 400W Antec single rail (20a) without any problems.

09-06-07, 08:36 AM
I'm just wondering because the back of the box says at least 350w with 12v @ 22A or more for SLI 500w with 28A or more.

With dual rail do the amps add up or something like rail 1+2 @ 18A ea = 32A ?

Also if anyone has the time.. Why would my old 6800 cards fail 90% in an SLI? When they fail it goes back and warns me it underclocked. The two 6800 cards are in great shape never overclocked, same bios, and have the same card revision. I'd like to sell these cards now but I won't be able to if they are so shakey.