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PSU for gtx 560 non ti SLI

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  • Power Supplies
  • Gtx
  • SLI
  • Components
  • Product
Last response: in Components
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December 21, 2011 2:26:54 AM

Hello,I am looking to upgrade my PSU for gtx 560 non ti sli I am using a corsair tx750 and I am pulling 700 watts from the wall at full load with this unit if I go SLI I will be eating up another 100 watts from the wall.

3 HDD 2 in raid 1 and 1 by it self
1055t at 4 ghz.

lots of fans cold cathode kit
3 SSD's

More about : psu gtx 560 sli

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a c 111 ) Power supply
December 21, 2011 4:05:16 AM

jchambers2586 said:
Will that be enough I will be over clocking the cards.

Yes. It gives you headroom for oc
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December 21, 2011 4:10:19 AM

amuffin said:
Yes. It gives you headroom for oc


It seems I have to change a PSU every time I change GPU's. Is there enough room for future upgrades to the cpu and GPU's. Or do I keep on the current path change the PSU every SLI/cross fire up grade.
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a c 111 ) Power supply
December 21, 2011 4:31:04 AM

jchambers2586 said:
It seems I have to change a PSU every time I change GPU's. Is there enough room for future upgrades to the cpu and GPU's. Or do I keep on the current path change the PSU every SLI/cross fire up grade.

You can use the same psu for future builds. ;) 
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a c 154 ) Power supply
December 21, 2011 7:17:04 AM

I think you are overly concerned about what comes outta the wall. Your PSU is rated on what comes outta it, not outta the wall.

A single 560 pulls a full system load of about 350 watts ....a second one adds another 150
http://www.anandtech.com/show/4135/nvidias-geforce-gtx-...

Two 560 Ti's pull just 300 watts (just the cards)

http://www.guru3d.com/article/geforce-gtx-560-ti-sli-re...
With 2-way SLI we noticed our power consumption for the cards peaked to roughly 298 Watts, that's JUST the two cards, not the entire PC.

Putting two 560 Ti's in here also comes up with just 353 watts - 88 watts as a base draw or 265 watts
http://extreme.outervision.com/PSUEngine

Remember ...at the wall will be a much larger number than what PSU puts out.....at 80% efficiency, 700 watts at the wall is just 560 watts output....adding 150 is still below the 750 rating.

I have two 560 Ti's upstairs in Son No. 3's box, had them OC'd to 1020 MHz and the CPU OC'd to 4.8 and was pulling less than 600 watts under OCCT 4.0 (Antec CP-850 PSU)

Yes if I was building a new box, Id take the 850 over the 750, mostly because the XFX 850 is the same price as the 750.......but given the quality of the unit, the 750 V2 should be fine. And yes, since the XFX gets the same jonnyguru performance rating as the Corsair V2's, if ya wanna sleep better at night and move up, grab the XFX and save the dough.
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December 21, 2011 8:00:13 AM

I have a XFX PSU and LOVE IT!
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a c 275 ) Power supply
December 21, 2011 5:14:46 PM

Really don't see the need to upgrade a very good psu to power a 150W max output gpu.
Double that for two cards and you still have plenty of headroom imo,even with both gfx cards and cpu oc'd.
That's your call though.
XFX 850W PRO850W XXX Edition Single Rail ATX 12V 70A 24PIN ATX Modular Power Supply 80PLUS Silver
http://us.ncix.com/products/?sku=62223&vpn=P1850BNLG9&m...
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