BebTech

11.5 GB frame buffer*

Pretty good rig, maybe a bigger HDD for more gamez 
 
You could also at some point update the graphics card to a 290x, you can probably run most things on mid-high graphics settings. Overall: 8/10

I think they may have been explaining how ddr works. Someone correct me if I'm wrong but the 32 bit vs 64 bit is just how long each address can be. DDR stands for double data rate which means that the memory can transfer information on both the peak and low points of each clock cycle. So a ddr3 1600 dimm is actually running at 800mhz but since it is capable of transferring information on both extremes of each clock cycle it has an effective clock rate of 1600mhz