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Appropiate Power supply
I see some power supplies advertised as "i5" compatable. I don't see why it would matter. Does it?
Considering this is my (proposed) setup:
AMD Phenom II X4 955 Black Edition Deneb 3.2GHz Socket AM3 125W Quad-Core Processor HDZ955FBGMBOX
ASUS M4A87TD EVO AM3 AMD 870 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
Plus a mouse, keyboard and maybe the Logitech game board. I'm thinking 1000w just to be safe but someone suggested 850w.
If I have to go over $200.00 I will.
These are the ones I'm thinking about:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182188
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341045
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153118
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Comments
Under an artificial stress test, your system will probably pull about 300-350 W from the power supply. Under heavy gaming loads, it will probably be under 300 W. A high quality 500 W power supply would have plenty of power for your needs. If you're buying right now, then I'd try this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371020
That seems to be at a discounted price right now, though, so it may not last long. This power supply isn't quite as good as that one, but is usually significantly cheaper on New Egg:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151094
You're really looking at entirely the wrong class of product. Even apart from price, I'd sooner take either of the power supplies I linked than any of the three that you picked. The important thing is not how much power the unit can deliver (provided that it has enough for your needs), but that it delivers the power well, that is, with the voltage it actually delivers close to the nominal one at all plausible loads, with little ripple and little change in voltage as the load changes. It also is good to have high quality components that are unlikely to break with normal wear and tear.
I highly recommend looking at the HardOCP power supply reviews. If a power supply passes their review process, it's solid. For just some names to look out for, Corsair and Seasonic usually do pretty well.
It's not about total wattage, it's about quality voltage regulation, and unfortunately, that isn't something you can see on a sticker on the side of the unit.
The video card is the largest power draw, and will be the driving factor in determining the ultimate wattage. Most CPU's all draw right around 100W (give or take a bit). I agree with around 500W-600W for a single 6870.
personally i like antec PSU and i wouldnt go under 750w in case u add a second card later on
http://www.antec.com/Believe_it/product.php?id=NzI4
Brenics ~ Just to point out I do believe Chris Roberts is going down as the man who cheated backers and took down crowdfunding for gaming.
Ok, I'll go with one between 500w to 850w.
Plus I was thinking last night, after posting, what a 1000w would do to my electric bill.
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This one gets good reviews on Amazon; the reviewers sound they like know what are talking about. I'm comparing their comments to you guys' comments. So I trust you know what you are talking about.
http://www.amazon.com/Corsair-CMPSU-750TX-750-Watt-Certified-compatible/dp/B000X2677A/ref=pd_sim_e_52
Their are 3 listed on Amazon, 550, 650 and 750. They don't come up on Newegg.
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I bought the Corsair 650HX for my new build and it works great. (i5 760, MSI H57M-ED65 mobo, 8GB G-Skill, 6850, H50 cooler). I went with the HX because I needed the modular cables for my Lian Li case.
I also have a corsair 550 in my other computer "they never die like some other brands".
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139012
good luck.
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