iamacow :
The E5 2670(not v2 (10 core) or v3) is an 8core 2.6ghz with 3ghz turbo on 2 cores for the X79/2011 socket (not 2011v3). I bought one last year on eBay and found it to be nearly identical performance to the i7 3930k 3.9ghz in Adobe Premiere. Those chips are only $70 on eBay these days and a great deal if you don't have a 3930k already and a unused X79 motherboard.
Neither is future proof since the chip is like 4 years old already. Give it 1 more year and the new sockets will be out with a reason to upgrade from a 5 year old chip (at that point). Right now the 3930k is still faster than the i7 6700k (Skylake) in video editing. Mainly because the 6700k is a 4core.
I hope that helps
yeah, i think the E5 isnt that great when it comes to age, but that price/ performance is pretty good. Does Intel releases CPU for a newer socket like every a year and a half or something? So i don't get it when people say "This CPU is newer, faster, and the upgrade ability is much more than the older CPU"