I got bored and really wanted to build a PC, so I came up with this as the cheapest possible option from individual parts. This will be a birthday gift to my sister to be used for streaming from Netflix and Youtube. I did not expect much at all from a $4.50 CPU and chipset graphics, but I was pleasantly surprised when I found this capable of streaming at 1080p with no lag or dropped frames.
Cooler: This cooler is loud, but efficient. CPU temps are low, and the whole system runs cooler than the room around it. My plan was to use the stock cooler, but apparently $4.50 doesn't get you one of those :P
Motherboard: This is crap. I used a vostro board purely because it was the cheapest compatible board with a Core 2 Duo. It feels cheap and only has VGA out. On the bright side, it uses standard connections (front panel, USB 2.0, etc) unlike many Dell parts and has decent enough onboard video with the Intel G45/43 Express chipset.
Case: is good cardboard box. good enough.
I know the pictures show a 3.5" drive, I decided it was better to use that and it fit. It's 80GB.
CPU: The Core 2 Duo E7500 is possibly the most powerful thing to fit in an LGA775 socket short of a Core 2 Quad, which this board can't use. It is truly amazing, especially priced (albeit refurbished) at under $5.
It's also RAM.
Aside from being the most expensive part and not having a power switch, this is a high quality PSU!