One friend is selling his asus b85-m mobo with i5 4570 and 8gb ddr 1600 for a really interesting price.

Now i have a Q8300 with 4gb ddr800.

Vga card would stay (ati 5750) cause 3 years later with the same money i bought it, i can buy a card which is only 10% faster, which i find outrageous.

Do you think its worth the upgrade? Would it make a big differences in maps known to suffer from fps drops? Would it help postprocessing taking a smaller hit on performance just changing cpu mobo and memo? Or do you think theres a high probability this new setup could give me those sad unexplained fps drops/hitchs that many people suffer with QL with and newer hardware?

Thanks