Moving the same way, Cyrix Corp of Richardson, Texas has reduced prices across its line of maths co-processors by 60%: the FasMath 83S87 is now $79 in versions up to 25MHz and $99 for the 33MHz version; FasMath 83D87 is now $99 for clock speeds up to 33MHz and $129 for the 40MHz version, Cyrix said.