evgen91 :
Your motherboard has G41 chipset, which is not designed for overclocking, you may get a very small overcklock but it will be insignificant and it can cause risks for your mobo.
P.S.: Previously i recommended gtx 960 graphic card as one of possible options for this CPU, but after test with similar Xeon and 8Gb of DDR3 1333Mhz RAM it showed bad performance in last section of benchmark test in GTA V: same graphic card with i5-4460 shows 54-82 fps and Xeon shows only 30-50 fps on the same medium graphics settings. So i would recomment GTX750Ti 2Gb as a best match for your CPU.
Ok, I never knew that the G41 chipset isn't ment for overclocking, thanks for the info. About the graphics card, I already have an R9 280X 3Gb and as weird as it sounds, there is very little bottleneck from the Xeon, in GTA V i get from 40 up to 80fps, all settings maxed out and in The Witcher 3 i get from 30fps in the most crowded areas, up to 75fps in the open areas and everything is maxed out except Nvidia hairworks.