I have an SGI rotting in my garage, what's amazing about them is the quality of the monitor. For CRT displays, the best damn monitor I ever experienced, just CRISP.

The Nintendo 64 had a MIPS R4300 chip, the SGI Indigio also used the MIPS Rchip, the early one had R4000/R4400 chip, the later ones R8000+ chips. I can only speculate that by using SGI, you could run some of your non specific N64 code locally and debug faster.

Original PSX had a R3000 chip, but Sony opted for BSD, their devkit ran on FreeBSD PCs and you built the code and ran on actual PSX device. Cheaper...