If you are doing alot of 3d editing I would go with the 750 it has a larger L3 cache, 4 physical cores where the 530 has a smaller L3 cache, 2 cores and 4 threads. The 4 physical cores will perform better than the 2 physical cores and 4 threads. If you have the money it would probably benefit you to go with the i7 860 it has a clock speed of 2.8ghz, 4 physical cores and 8 threads. The more cores/threads you have the more programs you can run at the same time without taking a hit in performance.
2.93ghz (No turbo boost tachnology)
2 cores /4 threads
2.66ghz (3.2ghz turbo boost enabled)
2.8ghz(3.46ghz turbo boost enabled)
4 cores 8 threads