Before I start going on about all those different code names, I'd like to give you some help with this
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Core Name
Processor Name
Explanation
Die-Technology
Klamath
Pentium II 233 - 300
Pentium II core
.35µ
Deschutes
Pentium II 300 - 450, Celeron 266, 300 Mobile Pentium II 233 - 300
Pentium II core
.25µ
Mendocino
Celeron 300A - 500,Mobile Celeron 266 - 400
Pentium II core+ 128 kB on-die L2 cache
.25µ
Dixon
Mobile Pentium II 266 PE - 400
Pentium II core+ 256 kB on-die L2 cache
.25µ, partly .18µ
Katmai
Pentium III 500 - 600
Pentium II core+ Streaming SIMD Extensions
.25µ
Coppermine
Pentium III 550 - 800
Pentium II core+ Streaming SIMD Extensions+ 256 kB on-die L2-cache
.18µ
Coppermine-128
Celeron 550 - ...
Pentium II core+ Streaming SIMD Extensions+ 128 kB on-die L2-cache
.18µ
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