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9800 gtx plus / ultra atx 600w power supply connections

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March 6, 2009 12:08:38 PM

Am putting together a new computer and realized that the power supply only has one 6 pin molex connector. Unfortunately the 9800 gtx takes two of the 6 pin power connects. Was wondering if it would be safe/advisable to use one of those adapter cables that uses (2) 4 pin molex and converts to (1) 6 pin? Also have an 8 pin power connect free but have not found any type of adapter to go down to a 6 pin. Any help on this would be appreciated.
a c 248 ) Power supply
March 6, 2009 1:08:09 PM

Yes, it is safe to use the two molex to one 6 pin adapter. That's what the adapter cable was designed for. However, that brings up a question. What power supply do you have or plan on getting? You'll need to check and make sure your power supply can handle the 9800 GTX plus all your other components.

One 9800 GTX video card uses about 132 watts and 11 amps at full load.

Two 9800 GTX video cards in SLI mode use a total of 260 watts and 22 amps at full load.
March 6, 2009 2:16:58 PM

ultra atx 600w power supply. AMD athlon 64 x2 6000+ 3.0 cpu. ASUS M3n78 Pro motherboard. OCZ SLI 4096MB PC6400 DDR2 800MHz memory. Seagate 250GB SATA harddrive. Lite-ON DVDRW 20x SATA w/lightscribe.
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a c 248 ) Power supply
March 6, 2009 2:21:57 PM

Here is a link to a psu power supply calculator:

http://www.antec.outervision.com/

The total you come up with will be for the entire system. Please remember the wattage will be overestimated because there are people who buy cheap psu's of poor quality.

Here is a link to a chart at Tom's hardware showing video card power usage:

http://www.tomshardware.com/review [...] 122-6.html
a b ) Power supply
March 6, 2009 2:43:11 PM

I run a 9800 GTX+ with one 6-pin and one adapter. Works just fine for me. The PSU is a Corsair 450VX.
March 6, 2009 7:40:47 PM

Thanks for the help!! I guess if I would have done a little more digging on the xfx 9 800 gtx plus than I would have known that works as I think I was sposed to get a couple of those adapters with the card, as well as a few other cables/adapters. I didnt get some of these as I am missing the spdif cable as well. Can anyone fill me in a bit on the spdif cable. Looks like a 3 pin cable from motherboard which has 5volt,audio out, and ground pins. It then goes to the 2 pin on the gpu.
!