besides the size and some new mobile connections the "guts" have stayed the same per Sony
Basic Specifications and Features:
CPU 32 bit RISC (R3000 custom)
Clock speed 33.8688 MHz
Main Memory 2MB
Graphics PlayStation GPU
Graphics Memory 8Mbit
Sound SPU 24 ch
Sound Memory 4Mbit
Disc Drive CD-ROM 2 times speed
The PSone does have a way for you to hook up a 4" TFT LCD screen for mobile play. The screen is supposed to be out this spring.
Computers and Power Tools, what else do you need?