would i see an improvement in gaming?

[pinkrice28]

if i switch from a
i5 4590 to 2 x5570

 

[lunyone]

I would seriously doubt switching from an it 4590 to 2 x socket 1366 CPU's. Most games are optimised for single threaded CPU's (not all of coarse), so the i5 4590 would be your cheapest and best option of the two you listed.