So i was looking around and i found a prety cheap x58 motherboard and a xeon x5650 to go with it and i was thinking whether i should swith to that. Now i have an amd fx 8350 and a msi 970 gaming motherboard, the cpu is overclocked to 4.5ghz.
Depends on what you are doing with it. Apps that can take very good advantage of multicore CPUs might do a tad better with the xeon. The AMD FX line employs architecture that cripples the multicore environment through the way the cores have to share resources. In some ways they are not true independent cores.
Typically, gaming performance is more tied to "per core" processing power (though that is slowly changing) and video editing will thrive on lots of cores. So your range of use spans that spectrum. You won't be able to make an easy choice between based on use. The ideal chip for you would be an i7.
The motherboard and cpu combined would cost me around 95 euros, and i could sell my old motherboard and cpu for probably more then that so i wouldn't be losing any money. Plus it's a motherboard that does support overclocking, and when overclocked to 4ghz i saw that it performs simular to an i7 5620k at stock speed which costs a lot more.
yeah, you're gpu is getting a little long in the tooth but it will still play a lot of titles with good frame rates. So if you are operating on a budget you need to prioritize. Personally, I would upgrade the motherboard/cpu/RAM first as those are foundational components.