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850 Watt antec trupower

post #1 of 12
Thread Starter 
Will it be enough to power up 2 6970's I only have one atm and am going to be buying a second one... exact same model... I will also be adding some fan controllers... Reason I say this is because I need another powersupply for my old system to power it up... am I just better off buying a new one soon one in the 1000 watt range... and call it a day and use this one to power up the old machine...

Thanks... in advance
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DARTH
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post #2 of 12
You could run 3 or 4 6970s from an 850w, you'll have loads of spare power.
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post #3 of 12
thats plenty of power but if you REALLY wanna give yourself an excuse to buy a new psu feel free to get a new psu. 850w is more than enough though.
    
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post #4 of 12
Thread Starter 
Video Cards -
http://www.newegg.com/Product/Produc...82E16814161349
x2
Powersupply -
http://www.newegg.com/Product/Produc...82E16817371009
The cards say they only need a 600 watt powersupply in crossfire... but I'm also running a pretty powerhungry cpu... and have a ssd, watercooling kit, fans, controllers, raid, etc to power up...
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post #5 of 12
Thread Starter 
lol cool cuz I got 300 bucks in front of me saying to a brand spankin new 6870... and I'm going to add the controllers and fans when I brake down the machine.

Thanks guys...
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post #6 of 12
The 6970 pulls no more than 200w at full load each. That's 400w for the pair full on, plus another 150w for the sandy bridge (SB is very power light, even at high overclocks) and another 150w for everything else... That's around 700w with everything loaded down.

A decent 750w could do it, an 850 will have room to breathe on top. Zero trouble.
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post #7 of 12
Thread Starter 
Thanks I trust Antec too so worse comes to worse I see its overloaded and order a new powersupply but I've seen no droop on this p/s with the current setup so I know its a good one...

edit and it handled my 4850's well so I guess it doesn't need to if it doesnt need to...
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post #8 of 12
It will be fine, you'll run out of connectors before you run out of power!
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post #9 of 12
Quote:
Originally Posted by allikat View Post
You could run 3 or 4 6970s from an 850w, you'll have loads of spare power.
Four would be seriously stretching it especially with overclocking.
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post #10 of 12
Quote:
Originally Posted by allikat View Post
The 6970 pulls no more than 200w at full load each. That's 400w for the pair full on, plus another 150w for the sandy bridge (SB is very power light, even at high overclocks) and another 150w for everything else... That's around 700w with everything loaded down.

A decent 750w could do it, an 850 will have room to breathe on top. Zero trouble.
Even that estimate is excessive. Mainly because "everything else" is more like 50W-75W, not 150W.
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