hello i wanted to know if this psu is good enough for hd 7870 http://www.coolermaster.com/product.php?product_id=5906&category_id=30
or this http://www.coolermaster.com/product.php?product_id=4199&category_id=2384
and if they are which one should i get.please dont refer any others i just want to know about these two
or this http://www.coolermaster.com/product.php?product_id=4199&category_id=2384
and if they are which one should i get.please dont refer any others i just want to know about these two