Hello PCBuilders I want to overclock a Celeron 300a to 450mhz and want to know what (which ?) motherboard(s) will support varying the CPU voltage through software ? I would prefer an AT board if possible but will change to ATX if necessary. Regards Laurie Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://nospin.com/pc/pcbuild.html