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Power supply for i7 and SLI.

Last response: in Components
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April 21, 2010 1:41:06 PM

Hi,

I'm currently looking to build a new computer, here's the plan:

I7 930
Asus P6T
6GB DDR3 1333
2x HDD 320GB
1x HDD 1TB
1x DVD-RW
GTX 470
Lian Li PC-B10 case

I usually keep my PC 3+ years. With this, long term, i would probably add a second GTX 470, SSD drive and replace DVDRW with some Blu-Ray drive when it gets cheaper (and games started shipping with Blu-Ray disks hehe).

What wattage (long term) do you think would be required to run this ? Also, which brands/models would you consider (modular please). I know Corsair does quality PSU, besides that, i'm a complete ignorant (kind of hehe).

Thanks !

trep-

More about : power supply sli

April 23, 2010 2:53:08 PM

The TX serie of Corsair doesn't look modular. How much AMP should i look for on the 12v rail for dual GTX 470 ?

Thanks !
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a c 144 ) Power supply
April 23, 2010 3:10:45 PM

The GTX470 eats almost as much power as a GTX480. A 750 watt Corsair will be enough - barely. I'd go to an 850 watt PSU. But then, I tend to overspec PSU's.

If you are seriously planning SLI, you do not really need a modular PSU. You will not have many cables left over.
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April 23, 2010 5:45:13 PM

850 watt for SLI or a single card ? hehe
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April 24, 2010 1:10:48 AM

I'm not sure why anyone would get a GTX 470 for SLI when benchmarks prove 5870 in Xfire do much better than SLI 470s. The 470s also consume way more power. So less performance, more power consumption. I don't see the point. I have 2 nVidia GPUs in SLI. I am not a fanboy, just a realist.
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April 24, 2010 1:11:57 AM

Fixed: My system is in my sig.
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a b ) Power supply
April 24, 2010 1:11:57 AM

one-shot said:
I'm not sure why anyone would get a GTX 470 for SLI when benchmarks prove 5870 in Xfire do much better than SLI 470s. The 470s also consume way more power. So less performance, more power consumption. I don't see the point. I have 2 nVidia GPUs in SLI. I am not a fanboy, just a realist.

i agree with you like 99.5%, but thats not what this thread is about.
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April 24, 2010 1:13:51 AM

shovenose said:
i agree with you like 99.5%, but thats not what this thread is about.


You are right. I got off topic a little. I have a Corsair TX750W PSU and I would hesitate putting SLI 470s on it. I'm sure it's possible, but it wouldn't leave much room for expansion in the future.
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April 24, 2010 6:56:30 AM

Could you post the article/review regarding the difference between the 5870 in crossfire and the 470 in SLI please ?
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