Re: 2900PRO + Thermaltake TR2 PSU
It looks very slim, as that power supply only has 18A. If it had 28A or so, then it'd be more safe. Maybe it might work, if you underclock your CPU and GPU, or just keep the CPU stock. Or enable C1E and EIST to throttle down the CPU when it's not in use.
Get that Corsair 520HX, as soon as you can.
If it was me in this situation, I would wait until I have enough for both the 520HX and 2900Pro. You can save money by getting the Corsair 550VX instead. Great power supply for the money.
3770K | ASUS STRIX GTX 1080 | DDR3-1600 16GB | CORSAIR 650D | CORSAIR HX 850W | CORSAIR H100 | SOUND BLASTER Z | ASROCK EXTREME4 GEN3