I want to play too!
Here's my deal. I am a big aesthetic whore. I abandoned the desktop PC space a while back. The financials finally recently worked out for me to come back in full force. All I need a "PC" for is gaming. I use Macs for everything else, productivity, media, etc.
Essentially what I wanted was an upgradeable and open console. And I wanted it for as cheap as possible, but aesthetics/size/etc. were important to me too, and the gigantic tower systems were just a no go for me at this point. I left the P180s behind 4 years ago.
So. I shopped around. This will not be a brain_stew style newegg list because I didn't just line up a build online and pull it down. My demands were also a tiny bit more specialized but should also demonstrate the bennies of scrimping.
I minimized everything else as best I could to block out $190 for the GTR Tech GT3. This is unquestionably the most excessive thing in my build, but a sleek SFF case which also takes all full standard ATX parts, was the one thing with this build I wasn't going to compromise on. It meant I was stuck with a 370W PSU, but c'est la vie. The case is built really well, even if it's a bit of a complicated build.
My config ended up like this, really dictated by the deals that I was able to run into:
CPU: Boxed E0 E8400: $130 on sale at MicroCenter - The sweet TDP/heat envelope and overclocking potential made this a no brainer at this price. Space and heat is a concern with my build. With the room in the case, I stuck with the stock cooler, but there's definitely room to expand.
MOBO: Asus P5Q Pro Refurb: $65 on Newegg - I would have gone gigabyte, but the pci-e bridge situation for my case dictates that the PCI-E x16 slot had to be in position 6 or 7
RAM: 4 GB OCZ 1066mhz RAM: $40 at Microcenter
HDD: 500GB WD: $30 off of craigslist
Notebook optical drive: Generic Dell DVD-RW: $10 off of craigslist
GPU: Sapphire HDMI 4850: $90 on newegg...I think I could probably get a 4890 in there, but this was one place where the case turned into a restriction, as it restricts you to 9.5" cards, which meant I was stuck with ATI. At that price, with solid HDMI+audio already on the card and a custom cooler, it has been a marvelous performer.
So, even with my $190 case, I ended up maxing out at $555 for this beauty. Obviously that was after careful bargain hunting. But even with my specialized restrictions (small/portable, attractive, fully upgradeable) I was able to make it work on a pretty stiff budget, and the results are just awesome. Now's the time! Apologies for the crappy pic, but it gets the point across.