So I once again was not happy with my design, so I tweaked it a little.

• I have enough information to use the PIII as the CPU, so that's staying.
• I'm upping the RAM to 128 bit, but lowering the frequency to 667MHz. This still increases the bandwidth to 10.6 GB/S.
• I'm ditching the CD drive entirely and having games only boot from SD cards or the hard drive if one is installed.
• I'm making the console somewhat modular. The power supply will be removable and the AV out will be VGA format on a custom connector, but you can use adapter cords to convert it to any other format such as composite or HDMI.
• I'm beefing up the GPU a bit. I'm now going to use an Artix 7 FPGA and upping the texture cache to 4MB. I'm also considering to remove having half the cores run out of phase from the others.
• The fan is now a 5V laptop fan.