Looking for a 4 core Haswell to upgrade my neighbor's little gaming PC. Installed a spare GTX 980 couple of weeks ago but it is being bottlenecked by the Pentium that's in his system. This is kind of a charity thing, I've lived next to this couple for years, great people who've fallen on hard times. Their son loves playing Minecraft and the like and is disabled, so I'd like him to at least have an enjoyable experience. They've done a lot for me in the past so it's the least I can do. Hoping to keep the budget in the $100 range. Thanks for looking!