Return To Castle Intel: 16 Years Of Motherboard History

Return To Castle Intel: 16 Years Of Motherboard History
By the beginning of 1996, the industry was in clear need of a return to the simple form factors that made AT and Baby AT desktops so easy to work with, only without AT’s legacy technologies. Intel had released the first specification for ATX in 1995, and Thor was the first Intel board to use the new form factor. While ATX has been updated a few times, the form factor, along with its microATX derivative, still remains the dominant format used in PCs today.

Thor featured a maximum bus speed of 66 MHz for Socket 7 Pentiums and up to 128MB of Extended Data-Out (EDO) SIMM memory. EDO marked a 10% to 15% improvement over the prior Fast Page Memory technology by allowing the memory controller to start a new column address instruction while concurrently reading a different address—multitasking. Of course, this required support in the chipset, and Thor’s Triton (430FX) core logic proved to be immensely popular and really established Intel as a leading chipset company. Triton also supported PCI level 2.0 and pipelined burst cache.

You’ll notice several blank spots on this Thor model. That’s because it was common for Intel, then as now, to produce reference designs that OEMs could then customize to taste. Not everyone needed an extra ISA slot or additional on-board memory.