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Corsair TX-650 enough for crossfire/sli?

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April 12, 2011 12:01:56 AM

I have a corsair TX-650 , with 52 amps on a single 12volt rail,

Would I be able to power two 6850's in crossfire with overclocking? (so essentially two 6870s)

Or from the green team would I be able to power two gtx 560 ti's in SLI with overclocking?

Note I also plan to overclock my cpu to around 4ghz

System specs:
i5-2500k
Asus P8P67 pro
Antec 300 (2 stock fans only)
8gb (2x4gb 1600mhz ddr3 ram)
1 HDD (WD caviar black)


Thank you....
a c 164 ) Power supply
a b K Overclocking
April 12, 2011 12:29:39 AM

easily, during gaming total system power won't break 450w
CPU: Intel Core i7-920 @ 3.33GHz
Motherboard: Asus Rampage II Extreme
Chipset Drivers: Intel 9.1.1.1015 (Intel)
Hard Disk: OCZ Summit (120GB)
Memory: Patriot Viper DDR3-1333 3 x 2GB (7-7-7-20)

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April 12, 2011 12:51:49 AM

Agree with ct1615.

Used this to help figure it out: Antec Power Supply Calculator Used 80 percent utilization, 25 percent capacitor aging, 4 led fans, plus the specs you provided.

Came up with 515W for the OC'd 6850 and 562W for the 560Ti cards.
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a b ) Power supply
a b K Overclocking
April 12, 2011 6:06:10 AM

Be sure to get the tx v2
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April 12, 2011 6:21:43 AM

Thanks for the replies, ill probably play it safe and go with two 6850s then since ati seems to use less power. I dont even need the 560ti's anyways... its just that I found the msi hawk one on kijiji for $200... in Canada so its a good price, but somebody beat me to it unfortunately.

What is the difference in the V2? I bought mine a while ago so its V1.
Is there anything in particular wrong with the V1? lol ... now I am worried...
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a c 274 ) Power supply
a c 183 K Overclocking
April 12, 2011 11:01:44 AM

amirp said:
Thanks for the replies, ill probably play it safe and go with two 6850s then since ati seems to use less power. I dont even need the 560ti's anyways... its just that I found the msi hawk one on kijiji for $200... in Canada so its a good price, but somebody beat me to it unfortunately.

What is the difference in the V2? I bought mine a while ago so its V1.
Is there anything in particular wrong with the V1? lol ... now I am worried...

There's nothing wrong with a TX650 V1 !
No worries:) 
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a b ) Power supply
a b K Overclocking
April 12, 2011 11:59:59 AM

If you already got the v1 there isn't a problem.but if you buying one now the v2 is the one to go for
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