This appears to be an extremely unusual product, don't you think? Would you like it? (Pentium Xeon III)
This appears to be an extremely unusual product, don't you think? Would you like it? (Pentium Xeon III)
It's a bit confusing, but the name suggests it was once similar to a Supra-Celica model before they split. As an add-in card, it could technically hold more than one CPU, though modern systems don't support that easily. The eBay link points to a collectible item, so it might be designed for enthusiasts who value such upgrades.
All Pentium III units had their slots installed. Note that not every one was included.
Back then, CPUs were mounted on cards rather than sockets, allowing the cache to be nearer the CPU. This setup was becoming outdated as the cache became integrated into the CPU itself. Intel's socket design was known as Slot 1, but this claim is incorrect—some devices used slots while others used sockets, and you could convert some to Slot 370 adapters.
There would be a place beside the RAM slot. Similar to the RAM slots. You'd insert a daughterboard along with the CPU. Search for Pentium 3 slot images and you'll find it.
This is how: Spoiler This is the motherboard I have. The black slot is a 16-bit ISA slots, the beige slots are PCI slots, and the brown slot is an AGP slot. You can see the 4 RAM slots, and the big brown one is the CPU slot.
AGP slot technology was quite interesting back then. Early Pentium II and slower PIII CPUs relied on slots for connectivity. AMD also offered slot-based processors, though their performance was constrained by that design. To overcome this, they likely used around 650 MHz with a 100 MHz bus, transitioning to Socket 370 for Intel and Socket A for AMD. Socket 370 supported chips up to 1.4 GHz, while Socket A reached about 2 GHz. Eventually, Socket 370 was superseded by Socket 478, and Socket A by Socket 939. Regarding PIII Xeons... Those were impressive machines. I managed to test a dual PIII server, but it didn't support Xeon models. The Xeon model used Slot 2 rather than Slot 1. However, the Socket 370 version actually utilized Socket 370 itself. It seems I haven't encountered any Socket 370 Xeon components lately...