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Good PSU for GTX 295?

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - Good PSU for GTX 295?

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doctorhorrible   11-10-2009 at 01:21:29 AM

Hi all - I have a 750-watt PC Power and Cooling, single-rail PSU right now (system specs in a second). The S75QB, I think. Here's my current rig:

Core i7 920
3GB DDR3
One SATA drive
GTX 280 OC

If I replace the 280 with a new 295, will my PSU handle it? Thanks in advance for your answers!

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Proximon   11-10-2009 at 01:54:25 AM
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Yes of course. Looks like your system probably pulls under 400W at load.

But why get a GTX 295? Hunt around for a 5870 for $100 less, and get DX 11 as well.

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Silver CPUs badge JohnnyLucky   11-10-2009 at 06:16:57 AM
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^5 +1 what Proximon said.

Your PC Power & Cooling 750 watt power supply can handle an overclocked Intel Core i7 920 with two video cards operating in dual mode. No Problem.

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skora   11-10-2009 at 06:40:47 AM
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I'd add a second 280 before shelling out the cash for 295. But I'd either jump to team red and get the 5870 or wait till next year and get a GTX 3xx card. No point in dropping that kind of coin just for it to end up as second gen within 6 months.

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mindless728   11-10-2009 at 07:22:32 AM
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+1 to the 5870, it could easily power 2 x 5870

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LePhuronn   11-10-2009 at 03:30:22 PM
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as stated above, PSU is fine for OC and a pair of cards - it'll be cheaper for you to get another GTX 280 and go SLI.

If you can't find one, or your motherboard isn't SLI capable then sell your GTX 280 and get a Radeon 5870.

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doctorhorrible   11-10-2009 at 08:58:04 PM
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Thanks for the replies, guys. I think I'll wait for the 3XX cards. Will they probably work in my 750-watt PCPC supply? Will they support DX11? I will always pick Nvidia first, but if ATI is going to be better....

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blackhawk1928   11-11-2009 at 02:05:54 AM
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I agree with skora, instead of buying a 295, you can get for cheaper another 280 and SLI them which is more powerful then a 295. However if that doesn't work out then wait for the 3xx series from nvidia or get an ATI 5xxx series.

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skora   11-11-2009 at 07:04:09 AM
- 0 +

doctorhorrible wrote :

Thanks for the replies, guys. I think I'll wait for the 3XX cards. Will they probably work in my 750-watt PCPC supply? Will they support DX11? I will always pick Nvidia first, but if ATI is going to be better....


A 750w PSU will be more than enough. Wattage is generally over estimated A LOT and the only real reason 750w is needed is they are the first wattages you see 4x pcie connectors with any kind of regularity.

Just for comparision, 2x 5870s only needs a 600w PSU. Nvidia won't need more unless you're looking at 2x 395 GTXs (or equivalent) and I'd dare say if you need that much horsepower, you're expectations are a little out of reach.

The 300 series cards will be Dx11
http://en.wikipedia.org/wiki/GeForce_300_Series

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doctorhorrible   11-11-2009 at 11:29:05 PM
- 0 +

skora wrote :

A 750w PSU will be more than enough. Wattage is generally over estimated A LOT and the only real reason 750w is needed is they are the first wattages you see 4x pcie connectors with any kind of regularity.

Just for comparision, 2x 5870s only needs a 600w PSU. Nvidia won't need more unless you're looking at 2x 395 GTXs (or equivalent) and I'd dare say if you need that much horsepower, you're expectations are a little out of reach.

The 300 series cards will be Dx11
http://en.wikipedia.org/wiki/GeForce_300_Series



Awesome, thanks for the tips. I think I'll wait it out to at least see what the 300s are like...no sense in buying before the information's available.

Thank you all!

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