
The first one is the long awaited Typhoon 2 for AMD, basically five 2S socket 1207 boards in a tidy package. The technical name is the T-540DX, but it is marketed as the PSC because of silly naming rights and the like.
It will take up to 10 2218HE chips for a total of 20 cores. The four slave boards are all Nvidia 2912 based parts, pretty standard fare. The interesting bit is that the head node went from a 2912 to a 2932 which supports 2 16x PCIe slots and SLI. This makes the AMD solution the graphics powerhose of the bunch and the Intel one the compute monster.
You will be able to get the T-540DX in the near future, production will start in April. There will undoubtedly be a Barcelona upgrade to take it to 40 cores, but Tyan won't even talk about that one, yet.

The next one is a barebones based off the Tyan S4987 aka the n3600QX, and it is called the GT26. It is a 4S AMD based 1U server sportin SAS, RAID and three drive bays. It is also based on the Nvidia 3600 chipset. That is a lot of power to pack into a single U of rack space. µ