I recently came across 2 deals for an R9 380 and an R9 380X. The R9 380 is being sold for 18K with 1.5 years of warranty. It's the sapphire g1 gaming edition one and seems to be in a pretty mint condition. The R9 380X is the asus strix model which is being sold for 20K with 35 months of warranty. Both of these have 4 gigs of VRAM and are said to be slightly negotiable. So, which one should I go for? Also, suggest a PSU for either of these GPU's. TIA