25.07.2009, 12:51
A CORSAIR 620HX or 650TX, will run MOST 2 card Crossfire set-ups. I wouldn't try running 3870 X2s or 4870 X2's in crossfire, but for any of the sincle GPU cards in Crossfire it should be adaquate.
If you want a little 'cushion', then either the 750TX or 750HX would run any 2 card Crossfire setup including the X2's.
If you are going to run 3 cards in Crossfire then you would need to go with either the 850TX, 850HX or 1000HX.
I'm specifying CORSAIR because they are as good a PSU as you can get quality wise. There are a bit costly, but you get what you pay for.
Just in case you don't know, the TX series are standard PSUs. The HX series are modular, and do cost more than the TX series.
One thing to remember is that while wattage IS important, the AMPS on the +12v rail(s) is MORE important. The newer video cards require a lot of AMPS, and if the PSU can't supply then it's worthless, no matter how high the wattage is.
We have 3 systems here at home and all of them have CORSAIR PSUs. Two gaming systems with 620HXs, and a low end system with a 400CX. All of them have been flawless.
My system is: Phenom II X4 940, 8GB RAM, 3 SATA HDDs, I SATA CD-DVD, 1 FLOPPY with integrated card reader,, 3870 X2 video card, X-Fi Platinum sound card with the (powered) front bay, 3 120mm fans, and a Koolance Exos2 which is also powered bu the PSU. My 620HX handles all of that with ease.
If you want a little 'cushion', then either the 750TX or 750HX would run any 2 card Crossfire setup including the X2's.
If you are going to run 3 cards in Crossfire then you would need to go with either the 850TX, 850HX or 1000HX.
I'm specifying CORSAIR because they are as good a PSU as you can get quality wise. There are a bit costly, but you get what you pay for.
Just in case you don't know, the TX series are standard PSUs. The HX series are modular, and do cost more than the TX series.
One thing to remember is that while wattage IS important, the AMPS on the +12v rail(s) is MORE important. The newer video cards require a lot of AMPS, and if the PSU can't supply then it's worthless, no matter how high the wattage is.
We have 3 systems here at home and all of them have CORSAIR PSUs. Two gaming systems with 620HXs, and a low end system with a 400CX. All of them have been flawless.
My system is: Phenom II X4 940, 8GB RAM, 3 SATA HDDs, I SATA CD-DVD, 1 FLOPPY with integrated card reader,, 3870 X2 video card, X-Fi Platinum sound card with the (powered) front bay, 3 120mm fans, and a Koolance Exos2 which is also powered bu the PSU. My 620HX handles all of that with ease.