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How much power do I need?

H

Huskernation

Limp Gawd
Joined
Jan 11, 2011
Messages
436
Ok here is what I am running now. 2500k oced to 4.4, 1ssd and 1 regular hdd, 6 case fans, 2 optical drives and an oced gtx 570. I am running this off a corsair 750w but am very hesitant to add another oced gtx 570 with only 750w. I saw this posu and the price looks good but dont know much about it.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817341045

I also like this one but it's more expensive and less power

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011

I am open to suggestions but I don't want to be maxing out my psu.

Thanks
 
All three of those PSUs are actually pretty good, but realistically, your current 750W PSU is enough for a second GTX 570 as well. I would stick with what you've got.
 
Yes, it should still be enough. Try it first, and if you experience instability or sudden shutdowns, then you can consider getting a new PSU.
 
Ok, maybe ill give that a try first and see but if that xion unit is decent that is cheap for 1000w at $110 after rebate.
 
It's cheap and it's a decent PSU, but it's not that great compared to what else is out there, and I have no idea how good or bad Xion's service is in case you end up having problems.
 
Nothing wrong with your current psu. Its got more than enough juice

+12V@62A
 
Pulled this off a review of the gtx 570

GeForce GTX 570 in 2-way SLI

A second card requires you to add another ~225 Watts. You need a 750+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking).

Do you think they are over compensating a bit?
 
I think you might be borderline, but I don't think we can say for sure if you need more power. It's your choice whether or not you want to buy another PSU.
 
Huskernation said:
Pulled this off a review of the gtx 570

GeForce GTX 570 in 2-way SLI

A second card requires you to add another ~225 Watts. You need a 750+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking).

Do you think they are over compensating a bit?
Click to expand...

I'm guessing you pulled that off guru3d, as they always always always bump the numbers up for no real reason that I can understand (it doesn't even make sense when they bench their system to use like 350W, 5 lines later they recommend you get a 500W PSU, wtf).

@OP: You could probably run dual gtx570s on a 650W with a heavy overclock if you were a risktaker, a 750 gives you room to breathe easy. The Corsair 750tx (which is what I assume you have) is a nice quality PSU, if a bit dated. It will be able to handle almost any dual GPU combo on the market, except maybe SLI 480s (some people recommend 850 for 580s, but a 750 could probably run that depending...).

EDIT: If you do get the upgrade itch, I would pass on the OCZ ZX, it's decent but nothing special, an older design, made by Highpower. I'd be wary of a 1000W gold rated PSU at $150 really.The HX is a very nice unit, as is the AX850
 
Last edited:
hpokey said:
EDIT: If you do get the upgrade itch, I would pass on the OCZ ZX, it's decent but nothing special, an older design, made by Highpower.
Click to expand...
The ZX line is made by Great Wall. The old Z series was made by Sirfa.
 
Ok thanks, I am leaning towards the zx 1000w for $140 after rebates or waiting for the hx850 to drop to around $130 after rebates. I have second desktop that I can use my current psu in and am not sure I want to risk it with a brand new sandy bridge build. It would suck to have it burn out some parts because I over did it.
 
750 might be enough.

I'm using SLi GTX 480s overclocked and an i7 930 at 4.3Ghz on a 850W PSU and it runs fine.

GTX 570s and the 2500K all use less power than my cards and my CPU.
 
The Xoin psu go under 3 names.

AXP-1000P14HE not certified
AXP-1000R14HE (lan Party ed) Certified
Xon-1000R14HE Supernova - not certified

And the
OCZZ550
OCZZ650 were made by FSP which has been discontinued and the ZS is series coming out will also be made by FSP
 
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