Which CPUs does my motherboard support?
This depends on which version of the motherboard you have. Support is as follows:
KT7/KT7-RAID: 100MHz (200MHz DDR) FSB processors only. Fastest processor supported is the Athlon 1400(100) - but it must have locked (disconnected) L1 bridges. AthlonXP processors are not and will not be supported.
KT7E: As for KT7/KT7-RAID although unofficially many users have also succeeded with 133MHz Athlon processors. Although the AthlonXP is not officially supported, several people have told me that they using one without problems.
KT7A/KT7A-RAID versions 1.0 to 1.2: All Athlon (Thunderbird) processors with both 100MHz and 133MHz FSB. AthlonXP processors are not officially supported due to a minor timing problem that can require you to hit reset during a cold boot. Unofficially, however, few people seem to experience this problem and these processors work fine.
KT7A/KT7A-RAID versions 1.3: All Duron, Duron (Morgan core), Athlon (Thunderbird) and AthlonXP processors are supported.
The motherboard version can be identified by the bar coded sticker near the ISA slot. Likewise, according to ABIT technical support the Duron (Morgan core) is only supported on the version 1.3 of the motherboard.
Paul's Unofficial ABIT KT7 FAQ