I currently have an AMD Phenom II X4 945 with a Gateway DX4320 motherboard. I've been wanting to get an I5 4590 (best price for performance from what I've seen). However, I've been told my motherboard can't support it. Is it worth getting a new motherboard for an Intel processor, or is there an AMD CPU whose performance would be just as good for the price of a new motherboard and processor?