the best you can afford may look at a xeon as well lot of folks go for them over a i5
[example]
Pros: High performance per dollar spent. Upgraded from an i5 4460 and it's night and days in Cities Skylines. Basically upgraded only to play this game.
Pros: 4 cores 8 threads i7 performance at i5 prices. Works in any 1150 motherboard
Pros: This things a monster!
3 months of hard game used, recording/streaming and rendering and I've still not been able to stutter or slow this thing down!
http://www.newegg.com/Product/Product.aspx?Item=N82E16819117316
just check your boards cpu list for compatibility or bios needed
good luck