Pougette, GIGABYTE GV-N75TWF2OC-4GI, and the ASUS STRIX-GTX750TI-DC2OC-4GD5 are the goto cards for iray budgets buyers right now. They are the only 4gb Nvdia 750 out there for now. It is a powerhungry beast with 2 fans and needs a 6pin power in so make sure you have one or buy an adapter if it does not come with card. The first thing to do is download gpu z and make sure you have a 4gb card because some sellers are selling their 2gb cards and calling them 4gb total with ram share which will not work with Nvidia Iray. You can only render with the ram on the card physically. You can add cards later but the card with the lowest amount of ram will determine how much you can use for Iray. Video ram in Iray is not cumulative. So this means that two 4gb cards does not equal to 8gb of video ram for your render it just means you only have 4gb's to work with whole but the extra card adds to cuda core count so adding an extra 1000 cuda card just makes renders faster but it does not give you more room to work with. This is a great card for Iray budget hope this helps.