Peltier Effect

I'm planning to do a liquid cooled loop with the coolant going from the CPU block to a 120 mm radiator, to some Peltiers to chill the liquid below ambient temps. I'm doing it for a school project and I dont have much funding. Tbh I have no idea what i'm doing and could really use some advice...

I've found an old computer from 1989, and I wasn't able to find any information about it anywhere. It's a Honeywell Bull HDS-1. Anyone that knows something about this computer?

Would upgrading form a i5 4670 from a i5 750 and keeping my ram and getting a new motherboard. my PC specs are i5 750 2.66gbz 8gb DDR3 ram Dell Optiplex mobo 128gb Crucial SSD 250w HP powersupply HP case