TX650 and 5870 crossfire.

I want to buy another 5870 to crossfire with, but I'm scared my corsair TX650 ---> (http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005&cm_re=tx650-_-17-139-005-_-Product) won't be enough for it. Even though it says it supports SLI/Crossfire.

Here are my specs.

i7 930 at 4.0ghz
Sapphire 5870
6gb of XMS3 corsair
P6X58D - E asus motherboard
TX650 PSU
1TB 7200rpm HDD
1 Blueray DVD RW drive.
3 fans
2 12' cathodes.
Tunic Tower Extreme CPU cooler.
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More about tx650 5870 crossfire
  1. I think it should be OK considering it is a Corsair. They claim 52A on the +12v rail and them I trust. 52 amps = 624w. Crossfired HD5870s use about 300w on average and I doubt the rest of your system ever goes much over 200w
  2. Since you have overclocked your CPU to 4 GHz, I would suggest that you get the 750 TX at least, just to be on the safe side.
  3. He already has the 650w and it should be fine.
  4. But the Core i7s do consume a lot of power when overclocked.Though the 650w would be fine if he overclocks those GPUs as well then it will push the PSU to its limits.
  5. You should be fine. If you're worried about it, you can buy a load meeter like this one to see what kind of wattage you're currently pulling from the wall

    http://www.newegg.com/Product/Product.aspx?Item=N82E16882715001&cm_re=p3_kill_a_watt-_-82-715-001-_-Product

    Do Prim 95 on 7 threads and furmark at the same time to see the worst case scenario. Also take into account the PSU efficiency, so if it's 80% when it's pulling 500W from the wall, then it's delivering 400W to your system. Anyway, I'm sure you will see that your PSU has can handle it, though if you wanted to OC your 5870s with a volt mod as well that may be pushing it ^_^
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