What psu should I choose??

Tradesman1

Legenda in Aeternum
There are numerous places that have PSU calculators available on the web, try a couple, seriously doubt you'll see any that will show close to 750 for your rig, a good 500 as I mentioned is plenty unless you plan to XFire in the future, then a 7-750 might be appropriate ;)
 

MasterMace

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I wouldn't throw down $200 on an AMD. I'd switch over to Intel. I also wouldn't throw down $260 on a 270x. Your build comes to ~$930. You can do better with a rig based off a i5-4430 and a GTX 770.
 

MasterMace

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With your build, it's a waste of money. You're paying double to get nothing extra.
 

Loulis Feminatus

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can you help me then with my build (if I am not wasting your time)
 

schau314

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If you're going amd the 8320 is best performance per price. the 8350 is 50 dollars for not much.
If you're going intel the i5-4570 or 4670k are both fine for the price of the 8350. They are cooler and use less power so you won't need a great cooler unless overclocking.
 

Loulis Feminatus

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i read somewhere that the 8 cores are better than 4...i really dont know
 

schau314

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In some cases but intel has better cores. If you need 8 that is a good way to go, but most don't even use 4 at a time. Also if sli or xfire is needed usually 750 watts. If not then 500 to 550 is usually sufficient.
 

Karadjgne

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PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i3-4130 3.4GHz Dual-Core Processor (€106.44 @ Amazon Deutschland)
Motherboard: ASRock Z87 Extreme3 ATX LGA1150 Motherboard (€97.23 @ Hardwareversand)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory (€78.58 @ Amazon Deutschland)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (€48.98 @ Pixmania DE)
Video Card: Asus GeForce GTX 770 2GB Video Card (€299.90 @ Amazon Deutschland)
Case: Corsair 200R ATX Mid Tower Case (€52.90 @ Caseking)
Power Supply: Antec High Current Gamer 620W 80+ Bronze Certified Semi-Modular ATX Power Supply (€96.36 @ Amazon Deutschland)

Total: €780.39

(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-06 02:48 CEST+0200)
 

Loulis Feminatus

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not in $ in euros :D