confused about psu for 9800gtx sli

[tw33ter]

Will the Corsair HX620W be able to handle 2 9800gtx's and an overclocked q9450? I really want a modular psu that's capable of handling that, but since the 9800gtx's require the 2 pcie power supplies, I'm at a loss as to which power supply to choose.

 

[mpilchfamily]

That corsair is unable to handle that configuration. Not enough power or connectors. If you want modular cables then you will need a PSU like this one. Its an 850W Thermaltake with modular cables. Supplies 4 PCI-e connectors.
http://www.newegg.com/Product/...x?Item=N82E16817153043

 

[panfist]

I would say that is not enough. If it does work, you'd be running the PSU at or beyond its limits. For 9800GTX SLI with a quadcore, I wouldn't go for anything less than 800W unless you want to run your PSU at near 100% capacity

 

[HOOfan 1]

It could handle it, although you would have to get a couple of molex-PCI-E adapters.

I would be more inclined to go after one of these though

Silverstone Strider 750 Watts, Silverstone Decathalon 700 or 750 Watts, Seasonic M12 700 Watts or Zalman ZM850-HP All with plenty of power and enough PCI-E connectors.

Originally posted by: panfist
I would say that is not enough. If it does work, you'd be running the PSU at or beyond its limits. For 9800GTX SLI with a quadcore, I wouldn't go for anything less than 800W unless you want to run your PSU at near 100% capacity

9800GTX uses less power than the 8800GTX and nVidia certifies plenty of 750Watt units for 8800GTX Sli...and we know they are pretty conservative

 

[panfist]

Originally posted by: HOOfan 1
or Zalman ZM850-HP All with plenty of power and enough PCI-E connectors.

Originally posted by: panfist
I would say that is not enough. If it does work, you'd be running the PSU at or beyond its limits. For 9800GTX SLI with a quadcore, I wouldn't go for anything less than 800W unless you want to run your PSU at near 100% capacity

9800GTX uses less power than the 8800GTX and nVidia certifies plenty of 750Watt units for 8800GTX Sli...and we know they are pretty conservative

Well, you got me there, but with an overclocked quadcore and if he wants to overclock the video cards, it's better to be safe than sorry.

If you get a cheap value-oriented power supply, it's better to overestimate. If you do your homework and buy a universally well-reviewed power supply, you can probably do fine with a 700W.

 

[tw33ter]

Thanks for all your input!

After doing some browsing over on jonnyguru.com, I think I'm gonna wait for the modular version of the Cooler Master Real Power Pro 1000W that jonnyguru reviewed (here).

Cooler Master Real Power M1000

Has four 6-pin & two 8-pin pci-e connectors, so I think that one will work great!

 

[HOOfan 1]

Originally posted by: tw33ter
Thanks for all your input!

After doing some browsing over on jonnyguru.com, I think I'm gonna wait for the modular version of the Cooler Master Real Power Pro 1000W that jonnyguru reviewed (here).

Cooler Master Real Power M1000

Has four 6-pin & two 8-pin pci-e connectors, so I think that one will work great!

Well if you live in the US, you are probably out of luck unless Ultra loses their patent infringement law suit. Coolermaster apparently isn't selling Modular PSUs in the US and it is most likely because of Ultra's patent.

 

[tw33ter]

Yeah I just noticed that... I guess I'll wait a couple of week for the 1000hx from corsair to come out and get that.

 

[skillyho]

The Real Power Pro 750 can be purchased for around $70 AR and should easily handle those loads. 80+ too....just not modular.