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In message Thu, 8 Dec 94 12:46:33 PST, george@cs.nps.navy.mil (Robert George) writes: >> > Can we use any Intel upgrade chip to bring this CPU up. >> >> I believe the TP750 CPUs, even the CE, are not socketed. > > I'm pretty sure the 750C's are socketed. They are available as a 50Mhz, > or a 75Mhz 486 with the same motherboard. I was told by IBM tech support > that the upgrade consisted of replacing a socketed cpu. Now wait a second. The TP750, 750CS and 750C all use the Intel 486SL/33 CPU which has been discontinued. Even if it were socketed, I doubt a 486DX would fit in its place - the SL has some functions built into it that are missing on the DX/SX. The 750CE uses a 486DX2. As does the 755 series. But the 750CE is an earlier incarnation of the 755 (and predates the DX4), so I'm not sure the CPU is socketed. The 755 series *is* socketed. At least that's what I was told when I asked IBM soon after it was introduced. _____________________________________________________________________ |\_____________________________________________________________________\ | | | | | John H. Kim "None of what you are seeing is actually happening." | | | jokim@mit.edu - disclaimer for TV movie 'Without Warning' | | | jokim@uni.uiuc.edu jokim@tuna.mit.edu does not work (yet) | \|_____________________________________________________________________|