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Ultra LSP650: should I buy?

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April 7, 2010 10:19:41 PM

I am planning to buy this PSU with my build.
http://www.tigerdirect.com/applications/SearchTools/ite...

My build is:
Althon II X4
1HD 7200rpm
4gb DDR3 1600
DVD-RW
My GPU is a radeon hd 5770.

With this arrangement, the newegg PSU calculator said I needed 425W.

However,
I plan to eventually upgrade to dual radeon hd 5770's in crossfirex. And also upgrade my CPU to a Phenom II X4 and get 4 more gigs of DDR3.

Now it calculated that I needed 604W.

So My minimum power supply should be at 650W.

This Ultra LSP650 seems good but it doesn't say crossfire ready, only SLI ready.

What do you think?

More about : ultra lsp650 buy

Best solution

a c 277 ) Power supply
April 7, 2010 10:27:57 PM

It only has 38A on the 12V rail, which would make it a decent 550W unit, or a lower level 650W unit, get a good PSU so you wont have to upgrade in the future.

550W and 750W units are the sweet spots, a 550W unit with ~40A on the 12V rail can run any single GPU card, a 750W unit with ~60A on the 12V rail can run a high end dual GPU setup. Look for one with a 5 year warranty and 80+ certification. The PSU is the only component in your build that wont be outdated in 3 years so get a good one. For dual GPUs i normally suggest the 750TX
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
but it appears that the antec TP-750 is on sale this week so its a pretty good deal right now
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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April 8, 2010 2:42:02 AM

I recently purchased CORSAIR CMPSU-750TX 750W; it is awesome only thing was a bit tricky is finding the 4pin connector. The 8pin connector separates into two 4pin connectors. comes with a nice bag too for your psu
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April 8, 2010 2:43:35 AM

SLI and Crossfire are the same thing, one is an Nvida standard and the other ATI...ALWAYS spend extra on a good power supply, it's really the foundation of any computer you may build!
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April 8, 2010 4:43:31 AM

Best answer selected by TheOKAY.
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April 8, 2010 4:43:52 AM

Thanks hunter, I just bought the antec TP-750 and I can't wait for it to arrive.
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