School Project 5450 crossfire and overclock

rig101

Honorable
Jun 17, 2012
9
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10,510
Hey guys my school is going to be testing out a lan event and I'm in charge of getting the computers running. The main problem is that the school has pretty pathetic Graphics cards but lots of them. The best I could find were a bunch of 5450s. My question is that would i be able to overclock and run them in crossfire? The cards are passively cooled if heat is an issue, i could rig up a few ice boxes with fans blowing cool air directly to the cards.
Computer Specs
intel core i5 750
Gigabyte Ga h55m ud2h
4gb Generic memory
Seagate Barracuda 7200.12
Generic 500w Psu
Generic mid tower case

Thanks in advance guys