What about the Athlon 1400 Thunderbird, with a 100 MHz FSB (serial A1400AMS3B, not C which is the 133 MHz FSB one)? I’m having a headache finding one and it was an old dream as I wanted to update my motherboard at its best when I was younger (an old Abit KT7, not KT7A). I know it’s a mass product …

Is this the DX2-40 some of you were looking for here (and some other Cyrix)? https://www.ebay.fr/itm/256439518717

Thank you all for your advices, insightd and thoughts. I'll put it under a microscope when I get the chance to do so but in the meantime, I keep it among its (non-fake) pairs.

Sphere478 wrote on 2023-07-09, 08:34: Oh that is interesting I also have a curiosity, a 200mhz sl27s ppga So same sSpec ID but different speed. I tend to think that the SL27S speed is 233 MHz, as per the various websites referencing it. Is yours labelled as 200 MHz or is running at 200 MHz (and …

Hello, I’m new here but loving hardware since decades. I’m taking the liberty of digging up this topic as I came accross what’s seems to be a Pentium 233 MMX in a CPGA package (ceramic, then, not plastic PPGA) but its sSpec is SL27S which relates to a classical PPGA P233 MMX. Also, I don’t find any …