Base 20″ iMac
Processor: 2.66Ghz Intel Core 2 Duo
Memory: 2GB 1066 DDR3
Video: Integrated GeForce 9400M
Hard Drive: 320GB SATA
Monitor: Integrated 20″ LCD
Other features: Keyboard, Mouse, DVD Burner, Mac OS 10.5
Price: $1199

Fully Loaded 24″ iMac
Processor: 3.06Ghz Intel Core 2 Duo
Memory: 8GB 1066 DDR3
Video: ATi Radeon 4850 512MB
Hard Drive: 1TB SATA
Monitor: Integrated 24″ LCD
Other features: Keyboard, Mouse, DVD Burner, Mac OS 10.5
Price: $3249

Now, Mac OS 10.5 retails for $129, the Mighty Mouse and Apple Keyboard retail for $49 each. So we’ll round this up to $230 and credit each iMac. This gives us adjusted prices of

Base 20″ iMac
Original Price: $1199
OS/Accessory Credit: $230
Adjusted Price: $969

Fully Loaded 24″ iMac
Original Price: $3249
OS/Accessory Credit: $230
Adjusted Price: $3119

Now, for comparision, I’ve composed 2 systems from parts at Newegg.com. For each I’ve tried for a rough approximation of the hardware in the iMac. I’ve created “Wish Lists” for each to share them.

20″ dwotMock
Processor: 2.8Ghz Intel Core 2 Duo
Memory: 2GB 1066 DDR3
Video: GeForce 9400 GT 512MB*
Hard Drive: 320GB SATA
Monitor: Acer 20″ Widescreen LCD
Other features: DVD Burner, MicroATX Motherboard, MicroATX Case, 500W Power Supply, no OS
Price: $629.91

24″ dwotMock
Processor: 3.06 Ghz Intel Core 2 Duo
Memory: 8GB 1066 DDR3
Video: ATI Radeon 4850 512MB
Hard Drive: 1TB SATA
Monitor: Acer 24″ Widescreen LCD
Other features: DVD Burner, MicroATX Motherboard, MicroATX Case, 500W Power Supply, no OS
Price: $1005.90

Savings over Adjusted Price

20″ dwotMock vs 20″ iMac
$339.09

24″ dwotMock vs 24″ iMac
$2113.10

Verdict? Well there’s certain concessions to be made, for certain. System building may not be for everyone, though it is certainly more simple that most would imagine. It’s not without it’s challenges, no one enjoys DOA parts and not everyone can troubleshoot a build gone bad. Off the shelf systems like the Mac often come with support, which I suppose someone has found useful sometime, though I couldn’t provide any evidence to support that conjecture.

There’s also the issue of Mac OS. No Apple Hardware, no Mac OS, right? Not quite. While Apple has certainly made their position clear with litigation, Macs run on standard hardware and there is an active underground scene dedicated to running Mac OS on non Apple hardware. It may not be for the Technophobe, but it’s certainly not impossible. Check out Lifehacker’s amazing Hackintosh guides.

That said, the 20″ dwotMock / iMac showdown gives the dwotMock a $339 edge, or 35% of the adjusted price. System building certainly has some financial benefit.

The 24″ dwotMock / iMac matchup, however, is a blow out. The dwotMock’s $2,113.10 edge is 68% of the loaded iMac’s price. For the cost of a loaded iMac you could build 3 equally spec’d PCs.

Check back later this week for our Mac Mini comparison.