Kirer

Hello people! It's my first post and probably has already been answered, but I curently live in a place where I can get a gpu basically tax free and am in a bit of a hurry with the purchase. So...I have a toshiba satellite with an i7 3630qm (4 cores up to 3.4 GHz) and 12gb of ram. I have a free mPCIe since I dont use the internal wifi card. Are there any common problems with toshibas? I want something just so I can ocasionally play current games. The internal gpu (7670m) doesn't cut it anymore. What would be a good choice for a gpu so that it won't be bottlenecked by other components and powerfull enough to play on high settings on a 1366x768 screen ? Thanks a lot