power supply 450w gpu needs 500w

zrzu

Honorable
Oct 19, 2013
2
0
10,510
I really would like to purchase : SAPPHIRE 100358L Radeon HD 7770 GHz Edition 1GB 128-bit GDDR5 PCI Express 3.0 x16 CrossFireX Support Video Card

I saw on a website it is recommended 500w, i just opened up my PC to find i have 450w psu.
Will this be ok? I am on a budget and i already will overspent just to buy the GPU so i thought i would ask your opinions before i purchase.

Also another quick question i'm pretty sure my mother board is 2.0 or 2.1 (if you could confirm would be grateful) and i see in other posts i should be ok with this GPU on the board

my motherboard is - Biostar A75MH