$70 - I have a hexacore Xeon X5650 I bought for 70 bucks on ebay. Overclocked at 4.2 GHZ.
$70 - Noctua Cooler NH-D14
$300 - 500GB SSD
$300 - Sabertooth X58
$330 - 970 GTX
$80 - 8gb RAM
$80 - Case
$50 - 520W PSU
$100 - Mechanical Keyboard
$50 - Mouse
Total $1430
With two upgrades in the past 6 years. I origanally had an i7 920, for $232, and a 460 GTX that was like 300. I resold them for about $200 dollars.
So last 5 years has cost me about $1800 bucks on PC.
Not going to count my monitor that is 27 inch 2560 x 1440 because I use all my game systems (PS3, WII-U) with it too.
It can play pretty much every game at 60 FPS at that resolution. Though some settings aren't quite maxed (Typically I turn MSAA to off or 2x. Since it doesn't increase the image quality that much more at my resolution, and use SMAA instead).
