jchambers2586

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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
 

jchambers2586

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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. ;)
 

jchambers2586

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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-560-ti-upsetting-the-250-market/16

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

http://www.guru3d.com/article/geforce-gtx-560-ti-sli-review/14
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.