From what I've been reading in my local forums for internet cafes, which IMO makes up a large part of the <$100 market in my country at least, the 730 is a little faster in most cases. Seems logical as it has higher base clock and more cuda/stream processors. Although the ddr5 240 has a lot more memory bandwidth, it's not hard to imagine the GPU not being able to fully use it. The 730 is also cheaper and easier to find. The only game I've seen where the R7 240 performs better is in NBA 2K15.That GT 730 is actually a GT 630 with more bandwidth - not a GT 640. It's probably still a little bit slower than the R7 240 GDDR5. Both cards should be benchmarked to check.