Intel Xeon E5-2650 V1, is it good for gaming and does it handle high end GPU? (like GTX 1080)



It can run them but not terribly well. It is a great CPU for video editing and I am sure you can sell it and buy a i5-6600k which is perfect for gaming.
 


well, planning to get GTX 1070, it will run it normally right? with no bottleneck?

 
There are always bottlenecks. If there weren't, your framerate would be infinitely high. Better questions to ask are, "can my CPU deliver the framerates I want in the games I play? Can my GPU hit those framerates at the graphical settings I want?"

The Xeon you have will work fine with a 1070, but don't expect it to deliver 60fps in all modern titles. It's not as fast as a Skylake i5 or i7.
 


i see! well iam not that expert at the PC hardware world, but because i got a good price on this CPU i got it, i knew that Xeons are long-term cpus and can handle high-end GPUs.. so as you said GTX 1070 will be fine? what if i got SLI of the GTX 1070? i just want to know my CPU's boundaries...
 
It will vary from game to game.

The 2650 v1 is, I believe, a Sandy Bridge 8-core / 16 thread CPU. It's based off of Intel's 2nd generation Core architecture, and has a base clock of 2.0ghz and a boost clock of 2.8ghz.

Most games don't make very good use of more than 4 threads, so something like 50-75% of your CPU will be idle while gaming. Games really like fast cores, and Skylake cores are clocked almost twice as fast, with a per-clock advantage of ~25-30%, so in extreme cases, you may see an i7 6700K performing 2.5x better than your Xeon. In other cases, where all of your cores can be used, it might perform very close to a modern i7.
 



so its all about usage of the cores? nice!

so as a conclusion, if i got the GTX 1070 everything will be ok? ( i play at 1920x1080) and i have 16GB of CORSAIR DOMINATOR PLATINUM RAMS

also, is it better than my old i5 2500K for gaming?
 


what do you mean by cpu capping framerates?
 
Let me set up a hypothetical:

You want to play game X. In game X, your GPU can deliver 50fps at max settings, or 100fps at lowest settings. Your CPU can deliver 40fps, and there are no settings that affect this. Because of this, whether at minimum or maximum graphical settings, you'll still get 40fps.