Hi,
I already tested the system out of the case using pretty much every single spare part I had. The parts that I used to test the system are the following (This was done between June/July):
Motherboard: Z87-UD3H (Gigabyte) / Z87-Pro (ASUS)
RAM: Corsair Pro Series 1866MHz / Kingston HyperX 1600MHz (Previous System Part)
PSU: 850 Watt Generic Brand (Previous System Part) / 750 Watt EVGA NEX
GPU: EVGA 660 Ti (Previous System Part) / Integrated GPU
Optics: DVD-RW (Previous System Part) / Blu Ray RW
Primary OS/Drive: Win 8 Pro 64 Bit on a Intel 520 120GB SSD with RAID drivers installed.
The only core part of the computer that I can't swap out to test is the Processor as I only have one.