Hello! I'm currently using a GTX 970 in my gaming rig to mine XVG & BTCZ. I have a spare rig (my old rig) with a R7 240 2gb (which can't mine) and I was wondering if I should purchase a GTX 750Ti for it to mine with. I have come across a GTX 750Ti for £55, is it worth buying this? What coin would be best to mine with it and how long would it take to get the £55 back?