Ryccardo wrote on 2023-11-09, 21:24:
And… again that manual is weird, sure my i815 motherboard that officially does 133 MHz is "one newer", but was your "only one older" chipset claiming that 66 is the most common speed and 100 cutting edge?
The i810 launched at a time when it was expected to be the low-end paired with 66MHz FSB Celerons; the 100MHz were the Slot 1 Pentium IIIs with 440BXes, which got discontinued rather than moving down in price; then they launched 133 with the i820 RDRAM chipset, the i820 SDRAM snafu, and then they scrambled and scrambled to come up with a working SDRAM chipset for 133 that became the i815. And really, the i810 was, I think, the first designated Intel low-end chipset with on-chipset graphics, no AGP, etc. The first 100MHz Celerons came out in early 2001, i.e. two years after the i810; that should tell you something about how long 66 stayed the standard on the low end.
Note that the i815 is a full year and a half newer than the i810. And aimed at a much, much higher market - the 440BX/i820 market that desperately, desperately needed an SDRAM solution for 133FSB chips.
I am even surprised that socket 370 100FSB PIIIs were made - I guess the large retail OEMs just really wanted to sell a ton of i810 systems with a Pentium III sticker on the front. I remember seeing recently a retro PIII system on some YouTube channel... and... wow, it was an i810, what a major league disappointment.
