GamePC heeft een review van de PIII-500E online gezet. Met een maximaal stabiele kloksnelheid van 667MHz bleek het chippie behoorlijk goed overklokbaar te zijn:
After setting all the jumpers on the IWill Slotket, we went to work. At first with default cooling, we stuck the chip in a Soyo SBA+IV motherboard, which ran the chip perfectly. Using Soyo's handy-dandy BIOS menu, we were able to get the chip at STABLE levels up to 667 MHz. We consider stable when the chip can run Prime95 overnight, and run Quake3 and 3DMark loops until the sun comes up on the next work day. That's a 166 MHz overclock, with retail cooling and default voltage, pretty incredible by all accounts. It just seems like yesterday when people were considering the Celeron 300A to 450 overclock a miracle, and now a 150+ MHz is a daily occurrence. Ahh, those were the days.