could I SLI a DDR3 and DDR5? memory type together, would pairing an HD 7750 provide the results I'm looking for? Can I SLI the 2 cards together b/c they are both AMD 7000 series correct or do I need two 7400 series or two 7700 series etc.? If so do they need to be the same memory type(DDR3 vs DDR5) I've read that ideally they would be identical cards but you can do it within the same series.
I Just bought a new comp for myself right before Christmas and it was meant for a powerhouse of a work computer, but now I think I'd like to game a little on it as well and want the best experience possible(didn't build it w/ gaming in mind so I think its a low-mid range gaming rig), though just dropping nearly $1k last month($700 to be more precise) I want to be thrifty while still not wasting my money by making the wrong/ill-informed purchase. I found a 1GB 7700 series w/ ddr5 and a 2 gb 7700 series w/ ddr3 which I believe is what my current GPU memory type is.
What advice would you give in order to achieve the best performance while staying on budget of $100-$200? Thanks for all the help I know just enough to be dangerous apparently