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The best power supply for extreme gaming desktop

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Homebuilt system Authority
Power supply Authority

Id be looking closer to a 700-750w PSU with a GTX 590.

Look for recommended brands and a good 80PLUS rating. Corsair, Antec, XFX and SeaSonic are all worth considering. Modular would be recommended too.
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Homebuilt system Expert
Power supply Expert

the i5 2500k for gaming. i7 2600k is totally unecessary. If you want to throw away $100, ill take it. i5 2500k is 97% the chip the 2600k is, at 65% of the cost. a 6-core processor does nothing for you for gaming, at all. so the 9xx series i7's are not a valuable buy.

GTX580 in SLI is the way to go, and i would suggest an HX1050 for that setup. Enough juice, and a good price. If you want a great psu, the AX1200 is the way to go.

Do not buy 560ti in SLI, you will hate the micro-stuttering.
Homebuilt system Expert
Power supply Expert

also, your RAM, buy an 8Gb set, but get 2 sticks of 4Gb, not 4 sticks of 2Gb. One is, with a decent aftermarket HSF, you may not have all your ram slots available, so you will need to consolidate it.
Homebuilt system Expert

casualbuilder said:
the i5 2500k for gaming. i7 2600k is totally unecessary. If you want to throw away $100, ill take it. i5 2500k is 97% the chip the 2600k is, at 65% of the cost. a 6-core processor does nothing for you for gaming, at all. so the 9xx series i7's are not a valuable buy.

GTX580 in SLI is the way to go, and i would suggest an HX1050 for that setup. Enough juice, and a good price. If you want a great psu, the AX1200 is the way to go.

Do not buy 560ti in SLI, you will hate the micro-stuttering.

The article that tom's did on micro stuttering showed that anything above a 6870 should alleviate the issue. I don't think the 560ti would be an issue.
Homebuilt system Expert

Although, I think its better to start with one more powerful card. Then when the time comes that you are bogging the system down, add a second card in there.
Homebuilt system Master
Power supply Expert

Go with the 2600K over the 980 - 1366 is very outdated, especially with the pending release of LGA 2011. That $300 CPU will easily outperform the more expensive $900 one you want to use.

And yeah for the price that a single 590 is going for, I'd definitely second the recommendation of using dual 580s instead.

Also if you're paying that much for a system, invest in a good, solid SSD and pair that with a 2TB hard drive instead of going for a RAID configuration with 2 1TB hard drives - that is worth it in the long run.

As far as PSUs go, I'd look into PC Power & Cooling, Corsair, and Seasonic are all excellent brands. Avoid anything that's a barebones, no name PSU and make sure the one you're using is certified and rated at least 80+ bronze or better. Silver and Gold rated PSUs are way better but they'll run you quite a bit more.
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