Part IV : Additional Codes
WPMW, SP1W, XPMW, XPCW, MPMW have no special meaning to the end-user, but according to the AMD Athlon XP Thoroughbred B Datasheet, the Third alphabet out of these 4 alphabets represents the number of production run/batch on a particular production date. For example, A represents the first batch of product on that week, B is the second batch, C is the third batch and so on;
It therefore can be said the first few batches have the best quality and purity, made from the purest wafer and finest assembling.
Other than A, B, and C, M represents the combined lots from many batches which cannot pass the Quality test (QC) for labeling as higher model like 2700+ but still can be marked as 2400+ for example.
Other than M, they are many alphabet out there eg. R, I, S, and even digits like 1 to 9. Codes with digits are deemed to be one of the poorest quality wafer, like SP1W. They have been combined and re-combined again after abandoning the poorer one from other batches. They are not finished at one go, instead they are finished after several runs of producing, which means they may fail the QC and passed to re-labelling line (Just my guess.)
That's why, those with codes like XPCW and WPCW can be overclocked to unexceptional levels even with default voltage !!
was ja wohl heißt @funker das unser RPMW net so der Bringer ist aber XPMW schon
so ein Mist
dannw erd ich meinen zurückbringen und schauen das ich ne XPMW bekomm