Tyan S1668
Here we have an ATX version of Tyan's proposal of a Dual Pentium Pro motherboard. Gladly Tyan decided to equip this board with 8 SIMM sockets, 5 PCI and 3 ISA slots slots; more would only be a case for the 450GX or KX chipset in conjunction with more than two CPUs. Performance is not an issue, but I think it's worth mentioning that this board is the fastest of the seven boards I got. Very good: The EIDE and floppy connectors are not placed straight together, so that all 5 PCI slots should be able to take extra long PCI cards. Again, BEDO DRAM is supported as well as the 'set books' ECC/parity. Thanks to the ATX design, the power supply fan provides some coolness; the two CPU and VRM sockets are pretty close together, otherwise it would become a hot affair. And as you certainly already know: The really good things are never cheap. Nevertheless, I think this is a very fine motherboard; I just would desire a PS/2 mouse and USB connector for total happiness.
ATX format, ATX power supply, Intel 440FX chipset; 3x ISA, 5x PCI; 8x SIMM; Award flash BIOS; external frequencies: 60, 66 MHz; multipliers: up to x4.0; I/O chip: SMC; PIO 4 onboard; FDC onboard; 2x serial 16550; 1x EPP/ECP parallel; 1x PS/2 mouse; 1x USB (without connector); IrDA support (without connector).
