Workstation-type build advice

[foolishlywise]

I've been asked to look into advising someone on a workstation-type machine (has to be X99).

Specifically, processors. 

 

Person in question is stuck between going for a i7 5820k or a Xeon E5-1650-V3. There apparently is a logical reason behind skipping the 5930k - apparently dispatch time is an issue so the quickest ones available are those two. 

 

The rig will be used for rendering video, some gaming, general working as well has hosting a couple of virtual machines but NOT using ECC memory or RDIMMs. Ideally, person in question would like to overclock, hence the choice of the 1650 coming into play as it is unlocked according to the internet. 

 

Questions arise as follows:

-The whole 'unlocked' E5-1650V3. I've read its locked and its unlocked. Can someone with the processor confirm if it is (or if its soft locked in the sense that multiplier cannot go over 40? I've seen that discussed too) 
-It seems the 5820k may just be a lower binned version of the Xeon. Will that not hurt overclocking performance?
-(Again, if someone has the chip) What's an achievable max overclock (Multiplier only, but base clock could be stretched a little 

 

Most importantly, which would be best (opinion-wise) - I understand there is no 'definite' answer, hence opinions

 

Cheers guys! 

[SLAYR]

Only the e5 1650 v1 (2011-0) is unlocked, the v3 (2011-3) is locked.

[JimmyGuilbault]

I think going with the i7-5820k (or even the new i7-6800k) would be better because of its price and its unlocked. I don't know how much room you have for overclocking but its better than no overclocking on the Xeon. The difference in performance is probably not noticable and i7s are still really reliable for workstations.