Ryzen. That's what I did.I'm still using my 920 and it's starting to become an issue with some games, several newer games have had massive framerate issues in certain areas that tax the CPU and I put Watchdogs 2 in my backlog until i get a new system because it was unplayable. I've been running at stock clocks since my water cooler went belly up which is a big part of the problem but it had already become the weak link when I still had it at 4 Ghz, I would replace the cooler but I think it's time for a new system I'm just still on the fence about what to get.
The weak IMC on the early Nehalems is also an issue, 12 GB is the biggest triple channel kit you get for it and at least with my CPU the larger the kit is the slower it needs to be run at. I can't get past 1066 Mhz with my 12 GB 1600 Mhz rated kit, couldn't get past about 1500 MHZ with my 6 gb 2000 Mhz rated kit, or past about 1650 Mhz with my 3 GB 1866 Mhz rated kit. I considered throwing one of the x58 xeons in there but my MB doesn't support the better ones or overclocking on any that would be a step up from the 920.
I guess what I'm saying is that it's still a viable gaming setup but it's far from ideal and if I wasn't so indecisive about what to get I would have replaced it already.