cyrix line of microprosessors was never known for their great speed either .. remember i had a friend he bought a 200 mhz cyrix while i had a 200mhz pentium computer. the cyrix always 90% of all programs would display it as 166mhz ,, and still a third friend who had a 166mmx pentium had a slightly faster computer .. Although i am sure the slc chip has nothing to do with this "only i never liked cyrix after that " may have been good prosessors before though..