Pentium I, II & III – 1994 to 2000 Laptop CPUs

Socket 5
Socket 7
Tape Cartridge Package
Mini Cartridge Assembly
Mobile Module Connector 1 & 2
Socket 615

idk how to hyperlink or whatever, but if you wan to see the fastest 770z and 600X processors, scroll to the nearly bottom. 🙂

This project took way too long and I was way over my head, again.
I originally wanted to do this in each socket type and form factor.
Because I am so unfamiliar with these, I eventually screwed up, inputting in the wrong data.
These processors are so old, that documentation is hard to find, even to see what system supports what.

I did so much research that I believe the admins of CPU-World.com had blocked access to their site.

I guess they have in the past done some IP blocking, but the site was down across a few different locations for me. Supposedly they got hacked but I sincerely doubt that, not linking to a paywall website….

The thing with the old pentiums (I was considering doing 286, 386 & 486 CPU research and pricing….), there was about 3 different pakage formats being released for every CPU. Socket 5/7, Tape Carrier Package (TCP), & Mini Cartridge Assembly (MCA). Also it looked like some laptop manufacturers used proprietary socket formats too, because I would look up TCP processors, and see that there are in some sort of socket type, or look like a sort of MCA, but with different pins.

IBM on some of the old bento box models, did have a processor daughter card that connected to the motherboard. On some of the HMMs you will see they had specific cards for replacement, but not necessarily the CPU only (and some even had math co-processor sockets too!). I tried to look up on the ThinkPad Forums what models supports what socket, but really only came to some avail. Some iterations have sockets, but most seem to have a soldered CPU. On systems that is common knowledge, I will post what laptops are compatible for each socket.

When I did the price guide, I HAD TO do general searches at first, so that means, this includes desktop processors. Because some sellers, will just list “Pentium CPU” but not put the package or format type. I had done this to see if there are fucking laptop CPUs against all the desktop ones. So most of the “Pxx Any” will have a lot of them available, but then the specific laptop CPU part / number, wont show it.

Old Pentiums, Socket 5, Socket 7, TCP & MCA.

• Pentium 150MHz laptops
  • Fujitsu Lifebook 400
  • Toshiba Tecra 730CDT
  • Hitatchi VisionBook Plus 4350X
  • Compaq Presario 1075,

Pentium II Processors

First and Slowest Pentium II ?

266MHz Pentium II – The baseline PII

300MHz Pentium II

333MHz – Third Fastest Pentium III

366MHz – 2nd Fastest Pentium II & a Celeron

400MHz – Fastest Pentium II & Celeron

Celeron Mendocino 433MHz & 466MHz

I find it odd that they let the Celerons go to 433Mhz and 466MHz on MMC-1, but then again, I’m assuimg marketing/branding wouldnt want the PIII to be outdone by a faster PII that is “lesser”. So they used the Celeron name,.

Pentium III MMC-2

If you’re upgrading an 770 or 600 Series ThinkPad, the PIII are the fastest processors you can get on these systems depending on mods and maybe later iterations… I wont go into it, but having a 770X, 770Z or 600X will bring the most milage on the faster processors.

The elusive 850Mhz! I wonder if there is a 900MHz version, no doubt I think some people are able to overclock a CPU onto that. I think the fastest CPU I own is a 650MHz, havent installed it yet… 😀
This is all bragging rights, these processors cost serious money, but at the same time you had DEC Alphas and

MMC-2 Coppermine Celeron

I added these Celerons here because… well, they have a decent speed and I was assuming if you cant find a PIII, you can get one of these. Well thats not the case on the faster CPUs lol

Popular Sellers

In no order, and its not really by location… 😀