GTX470 SLI Power requirement

Default_Uk

Default_Uk

Default_Uk

Associate
Joined
7 Jul 2010
Posts
20
Hi guys,

I am currently running a single GTX 470 (here) on an OCZ ModXStream Pro 700w Silent SLI Certified Modular Power Supply (Here). I am wanting to buy a second 470 and run SLI, i think i might be cutting it close but was wondering whether my current power supply was sufficient?

Current Spec:
i5 750 @ 2.67GHz
Zotac GeForce GTX 470 1280MB GDDR5 PCI-Express Graphics Card
Corsair XMS3 4GB (2x2GB) DDR3 PC3-12800C9 1600MHz (doubling to 8Gb)
OCZ ModXStream Pro 700w Silent SLI Certified Modular Power Supply
1 X 1TB HDD
1 x 2TB Eco HDD

Thanks for your help!
 
+1 for an 850w psu, will allow for a bit of headroom when overclocking. Running two 470's on a corsair hx 850w here.
 
Default_Uk said:
Thanks stulid,

That's pretty much what I thought, i was asking more in hope!
Is it worth getting a bigger PSU than the 850w for more overhead or would that just be a waste?
Click to expand...

A bit of a waste.

The GTX470+480's are unique in their power consumption usage.
 
With the spec in sig, cpu using 1.325 vcore my power draw is.

Gaming, 630w
Prime95, 470w
Furmark, 740w
Prime + furmark, 866w and climbing, not something ill do again. Cards clocked at 750/1500/1674, youll need to make sure that your case airflow is very good, with bad airflow theese cards can run rather hot.
 
i'll remember not to try running both at the same time setter!

Anybody have any input on which PSU will be better, the OCZ Z-Series 850W '80 Plus Gold' Power Supply or the Corsair HX 850W ATX Modular SLI Compliant Power Supply?

Or even the OCZ ZX Series 850W '80 Plus Gold' Modular Power Supply as it is on offer this week?

Thanks again!
 
While i think that the corsair is an excellent psu, im not that keen on the flat modular style cables it uses. The ocz seems to have rounded cables, therefore a bit easier to route and tidy, very helpful in minimising cable clutter.
 
look up jonnyguru / hardwaresecrets reviews. Personally, I'd go with Corsair, as it's proven. I don't think the OCZ are intrinsically bad, but Corsair has good warranty, good service, and good build quality. Or the Antec High Current Pro.
 
The OCZ has the same warranty period (5years) corsair needs sending to the Netherlands, not sure where OCZ is?

Edit.. Netherlands too.
 
I personally dont find any issue with my corsair not being fully modular. The 24 pin atx, 8 pin cpu and one set of pcie connectors are all hardwired to the unit, the 24 and 8 are hid away behind the mobo tray.
 
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