Quote from: Samantha2011 on June 23, 2011, 08:46:57 AM

PIII motherboards would only support AGP graphics cards as far as I know.

Read the topic...

Anyway yes PCI -> PCI-E adaptors work fine

I have a old xeon (P4) server running with an adaptor and a asus 5850 card @ 400mhash/s so overclocking and overvolting works just fine

the only problem i had was that i needed to short 2 pins on the adaptor because the motherboard wouldn't register the card while also using a 1x extender but otherwise you should be fine