How many watts will my PC require?

[tom_2345]

Hi, how many watts powers supply would i need for this setup:

Asus P8Z77-V LX2
Intel Core i5-3570K
Sapphire HD 7850 2GB
Corsair 8GB (2x4GB) DDR3
Maxtor Internal Sata II 160GB 7200RPM

I have a 500w power supply would i be able to use it in this setup? Also what do u guys think of this setup?


Thanks in advance

 

[Outlander_04]

http://www.realhardtechx.com/index_archivos/Page362.htm

450