Hi i have this GPU http://www.gigabyte.com/products/product-page.aspx?pid=4884#ov but its TDP is 300w which makes it very hot, i saw that RX480 8gb version is similar performance to R9 290X but with 150w TDP, is it worth buying it, because price is not that high 250 gbp for this one http://www.xfxforce.com/en-us/products/amd-radeon-rx-400-series/rx-480-gtr-black-8gb-dd-led-rx-480p8dba6 saw some videos that gigabyte one is not cooling well, and that xfx does cooling well and have oc room