I originally got this PC from my brother in law after he bought a gaming laptop (Not sure which but apparently it's a boss a** laptop). It came with a no name 500W PSU, a Radeon Hd 5770, an NZXT fan controller, all together a really old PC/Build.
First thing I did was pulled out the gpu and power supply for a Gtx 970 SSC and a Coolmax 700w psu. That held me for months with everything else left as it was. But as I work in a data center, I'd always itch to build a PC as i never have personally. As well as knowing the ancient P6T and I7 920 were holding me back some valuable FPS at it's stock clock.
So the time came where I ordered up parts to upgrade, a second GTX 970 SSC, corsair H1110i to overclock the I7 920, a more "aesthetic" case to stuff everything into. and a better power supply to keep everything going.
I've since gotten the processor stable at 4Ghz at low 30s on idle (on performance preset) and mid to high 50C under load at 1.4V. And the GPU's with a minor overclock and the top card reaching mid 78C under load.