Hey guys.
I'm building a new computer, and the PSU on it is an ATX 500b, but that isn't powerful enough to power my CPU and GPU.
I don't have much budget left but I really need a good PSU. I'm not going to OC at all.
Thank you.
http://www.tweaktown.com/reviews/5158/sapphire_radeon_hd_7870_xt_tahiti_le_2gb_with_boost_overclocked_video_card_review/index19.html
Sapphire Radeon HD 7870 XT (Tahiti LE) 2GB with Boost Overclocked Video Card Review - Power Consumption Test
Exactly the one I recommended but the OP now says the budget is even tighter than that. Although the real budget limit has never been revised by the OP.