What power supply would I need?

I don't know how powerful my PSU needs to be for my build.
CPU: i7-3770k
CPU Cooler: Corsair H100i
MSI Z77A-G41 ATX LGA1155 Motherboard
Corsair Vengeance LP 16GB (4 x 4GB) DDR3-2133 Memory
Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive
Asus Xonar DG 24-bit 96 KHz Sound Card
TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter
Lite-On iHAS124-04 DVD/CD Writer
Dell S2340L 60Hz 23.0" Monitor
GPU: Gigabyte ATI Radeon 7970 HD 1GHz 3GB PCI-Express 3.0 HDMI Windforce 3X
Also, my budget is around £80 or below

Edit: 15 fans in total, 10 of them being Cooler Master SickleFlow 69.7 CFM 120mm Fan
8 answers Last reply Best Answer
More about power supply
  1. This would work great, and its modular.
  2. seasonic-m12ii-620-bronze-620w
  3. Based on my assumptions about fans and other devices, the PSU calculator at still showed <500W for your rig. Allowing for even more margin, something like a 550W XFX PSU would be good for that build.
  4. 550W XFX PSU is enough but assuming K series and oc gpu this need more power :D
  5. Best answer
    Nope, it doesn't. With overclocking and capacitor aging thrown in, it just hits 501W, with 451W minimum. As good as the Seasonic-built XFX is, I'd be confident in it. Oh, the other two are also good PSUs, but over 600W is simply not needed.
  6. That's good to hear. I have a 750w corsair in my budget, and I'll be overclocking. But will it be enough to power 15 case fans? I'm getting the Antec Lanboy air.
  7. Oh, ouch...with 15 fans in there, the suggested jumps up to 600W, +/- depending on how many of them are LED fans.
  8. 15 case fans? How can you stand it? (the noise!)
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