Watt requirement for my desktop (PSU)

[Ston]

Hello community,

I would like to know what is the minimum Watt requirement for my desktop:

-Asus P8Z77-M Pro
-Aerocool Strike-X One (with 5 fans 12cm)
-Intel Core i5-3570k (maybe OC sometime)
-CoolMaster Hyper 212 EVO
-Gigabyte Radeon HD 7770 OC 1GB
-2xSeagate Barracuda 1TB SATA HDD
-2xCorsair Vengeance 8GB DDR3-1600 Kit (2x4GB, PC3-12800, 8-8-8-24)

If you need more info please fell free to ask.

Thank you in advance.

 

[cin19]

400W good brand PSU for no OC i5, if you OC the i5 get the 500w one for safety.

 

[Ston]

400W good brand PSU for no OC i5, if you OC the i5 get the 500w one for safety.

really? only 500w is enough?
I though that I will need 600w...

 

[cin19]

HD 7770 power consumption is less than 100W, i5-3570K (no OC) is about 100W too. If you OC i5 and it depend on how high you are going to, so 500W PSU is more than you need.
For HD7770 http://www.legitreviews.com/article/1873/10/
For i5-3570K http://www.guru3d.com/articles_pages/core_i5_3570k_review,10.html

 

[Ston]

Thank you very much cin19.
Your answer was very helpful