From: Peter Arremann loony@loonybin.org
Better believe it - cause that's what they are doing :-)
Actually, I can believe it (I just wish that had *1* good option). Tyan's focus is cost and economies-of-scale. You'll find the same of SuperMicro, among a few others.
When you start looking at HP and Sun's Opteron designs, then the mainboard cost is only a portion of the system cost. So they are more focus on delivering the optimal solution. Because doing so only affects the end price less than 10%, whereas it might affect the mainboard cost 50%+.
Tyan doesn't lay out that many different boards from scratch... just look at most of their stuff (S2892, S2885, S2882) - the CPU/memory area is identical, so all they did was take the old design, mod around with the chipset and PCI/PCI-X/PCI Express slots and they got a new one...
Actually, other than EMF and the support microelectronics, it's simply a matter of deciding how many traces you want, which may result in more PCB layers.
Tyan is really focused on cost. They have an older, "cheap" 2-way Opteron mainboard that doesn't even put DDR channels on CPU #2.
And several manufacturers are even worse than Tyan. Especially the non-server focused vendors. SuperMicro and Tyan are better than most.
But still not the quality in mainboard design you'll get from select Tier-1 OEMs like HP and Sun.
-- Bryan J. Smith mailto:b.j.smith@ieee.org