There absolutely was a P5 Overdrive from Intel for 486 motherboards ... I saw a few of them in the wild back in the day...
On Fri, Jul 10, 2015 at 5:51 PM, jwsmobile <j...@jwsss.com> wrote: > > > On 7/10/2015 1:21 PM, Joe Giliberti wrote: > >> Hey. I'm sorry for the off topic post, but I couldn't think of another >> forum to ask my question. I'm just looking for information as to whether >> there are different sizes Pentium processor dependent upon whether the >> processor is for a desktop or laptop. I want to see if I can give my old >> Hewlett Packard OmniBook a little more juice. >> > I don't recall there being any different processors in the first Pentium. > The big effort in power reduction was by a group who did a power reduction > project with the Pentium 3. Many of the laptops had full sized Pentiums > with novel cooling to make them work in a portable laptop form factor. > > There were a series of projects where Intel did processors to upgrade > previous families of chips with the newer technology. For example a 486 > chip engineered to be happy with a 386 pin bus, but running at a higher > clock, and similar upgrades for 486 systems. These were called "Overdrive" > and were not power reduced as a goal of the product. > > The Pentium was a big enough step that I don't know of any such for the > 486, where a Pentium could be stuffed in. The BIOS became enough of a > factor in making the Pentium go that it was necessary. Such dropins they > had were all self contained that I mention in the previous paragraph. > > The next act for Pentium (and quoting from this article) was MMX added > in. Pentium II of course went to the infamous Slot 1 / 2 form factor. > > > https://en.wikipedia.org/wiki/List_of_Intel_microprocessors#32-bit_processors:_P5_microarchitecture > > If you look up the processor you have in your Omnibook, some of the > Pentium P5's could be upgraded, but you had to be careful as some had > issues of being interchanged. > > Thanks > Jim >
