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GTX 480 SLI: Need PSU suggestions

post #1 of 27
Thread Starter 
I'm currently using an Antec TruePower 750 Watt Blue PSU and it was working fine but now I have TWO GTX 480's and I'm a bit worried that it's not going to be sufficient.

Here's my complete system:

Core i5 2500k
Sabertooth P67 motherboard
Bluray recorder
Intel X25-M G2 SSD
Velociraptor 150
WD 400 GB Drive (7200 rpm, not sure if it's blue or what model...)
2x GTX 480 (SLI)

Can somebody give me some suggestions? I'd like to stay under $200.
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post #2 of 27
http://www.newegg.com/Product/Produc...82E16817256067

this thing will own those 480's. I know it might be at the upper end of your budget, but this thing will last and last and last......AMAZING PSU. check the reviews......

this guy is a beast as well.
http://www.newegg.com/Product/Produc...G-_-17-256-067

money can be saved with no performance lost if modular isn't important. how important is that feature to you ?
post #3 of 27
Honestly you should be ok with a good 750W with 2 480's and a 2500k at 4.0. If you start overclocking seriously then yes you may need more. I have 3 480's at 875MHz and at full load they're pulling roughly 650W max at the wall (1100W total system power usage, 400W idle), which means about 600W from the PSU. So you'll be running about 400W with 2 480's and hard to imagine more than another 150W at 4.0 on a 2500k.

However this all assumes that you have a quality 750 watt supply, and I'm not well enough informed to tell you that.

>> edit my math is slightly wrong because I haven't taken into account the amount of idle power the 480's draw - I still think you'll be ok for normal use
Edited by stren - 7/21/11 at 6:13pm
     
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post #4 of 27
http://www.newegg.com/Product/Produc...82E16817151102

Best of the best for those monsters + OC
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post #5 of 27
Quote:
Originally Posted by danielwiley View Post
http://www.newegg.com/Product/Produc...82E16817256067

this thing will own those 480's. I know it might be at the upper end of your budget, but this thing will last and last and last......AMAZING PSU. check the reviews......
I think this one would be best for you as well.
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post #6 of 27
Quote:
Originally Posted by That Guy View Post
http://www.newegg.com/Product/Produc...82E16817151102

Best of the best for those monsters + OC
Fantastic PSU, can't go wrong with it

Quote:
Originally Posted by Inteller View Post
I think this one would be best for you as well.
His PSU is fine.
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post #7 of 27
According to nVidia's website the maximum power consumption of a single GTX 480 is 250W.

http://www.nvidia.com/object/product...ppnonp050r9sks

That makes 500W of max power consumption with stock 480's (no voltage increase). Depending on how much power is required from the rest of your system you might want to consider upgrading to a more beefier of a power supply. It's never good to strain your PSU, especially if you care about the components that it is powering.

I personally perfer Antec PSU's.

http://www.newegg.com/Product/Produc...82E16817371024

of course the corsair's are a great option too, and they have already gave you links above.


PS: stren, if you ever see this read your PM's.
Edited by iinversion - 7/21/11 at 6:50pm
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post #8 of 27
If you own a Corsair 850W then you're OK..

A single GTX480 pulls ~250W in games so SLI would pull ~ 500W..

Once you start to OC GTXs would pull ~ 650W..

With ~ 200W for the rest of your system you should be just fine (even with OC'd CPU)..

Generally a good 850W PSU would run a SLI GTX480 system just fine..


CHEERS..
     
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post #9 of 27
Thread Starter 
Darn... It looks like my 750 watt is just barely insufficient.

I actually have a Corsair 850 watt in my fileserver... I'll have to figure out if I can swap them and maybe that will work for me (but the PSU is a bit older).

If I do by a new one, can I get one more opinion on the Silverstone vs SeaSonic? It looks like two people recommended each of them
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Hard DriveHard DriveOptical DriveCooling
Samsung 840 EVO 128 GB SSD Samsung 850 PRO 1 TB SSD Lite-On 12X Blu-ray Burner (IHBS112-29) Noctua NH-D15 
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post #10 of 27
This one has been rock solid for my 580 SLI set up

Many will say it is to much, But I am not that agressive when I size Power supplies

http://www.newegg.com/Product/Produc...82E16817256057
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