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What power supply should I get?

Hello, I am currently building (ordering parts is more like it) for a system, an I am stuck of what PSU I should get. People recommended me some but I would like to know why they did and how they made the calculations so I can know how to do it by myself

well, here are the specs.

First I have my case. IN WIN MANA 136 (2 120 mm fans, 1 is LED other is not)
http://www.newegg.com/Product/Prod [...] 6811108406

Second, I have my Motherboard. ASRock Z77 Pro4-m LGA 1155
http://www.newegg.com/Product/Prod [...] 6813157306

Third, CPU i-7 2600 SB 3.4 - 3.8 LGA 1155
http://www.newegg.com/Product/Prod [...] 6819115071

4th graphics card. SAPPHIRE Radeon HD 7870 (OC to 1050 mhz)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102983

5th, RAM, G. SKILL Ripjaws X series 8Gb (4Gb * 2)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231428

6th, Western Digital 500gb 7200 rpm
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136795

7th, LG Blu - ray writer and reader
http://www.newegg.com/Product/Product.aspx?Item=N82E16827136241

8th, Rosewill wireless adapter b/g/n, 300mbps
http://www.newegg.com/Product/Prod [...] 6833166051

9th COOLER MASTER Hyper 212
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103099

and powering it all is a CORSAIR Enthusiast Series TX650 (recomended by other forum users)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020

So will that PSU power it all? and how do you come to that conclusion?, Thanks for your help once again!
6 answers Last reply Best Answer
More about what power supply
  1. Easily you could even go less if you want to save a bit of money.
    http://extreme.outervision.com/psucalculatorlite.jsp
  2. THANKS! Oh, and don't worry about the describing of how you found it. I saw the sticky at the top of this forum. I will check back here to see if this tool has recomended the best type of PSU that will fit my needs
  3. 395 watts it said. Is that correct? can someone check my work?
  4. Best answer
    Yes Actually a 400W PSU can power your system but you won't have a chance for OCing, Overclocking draws more wattage in your system. Also when the system in Load it draws much more power than that "392W" So you're fine with that 650W PSU.
  5. I'm not really into OCing, I feel as if I will break something and if I ever do it correctly I will have to do it to every component in my computer.
    Thanks for all the help! You guys are wonderful!
  6. Best answer selected by majorawsome.
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