With this board, your best options to match with 750Ti are one of the following (2nd hand): Phenom II X4 945/955/965/975 (all quad cores) or Phenom II X6 1090T/1100T (hexa-core). Especially if you can find any of them for a bargain.
that helped me a lot!
Hi. I interested in buying a ssd for the same mobo. Did it work for you? I heard this mobo has some issues with ssds.