I also had many problems with errors using the shipping Bios on the K7, I upgraded to the 2.06 Revision and it cleared them all up. I have built 2 Tyan Thunder K7 systems without many problems at all. The only problems that I have encountered is the incompatibilities with some SCSI RAID cards. I have used a Adaptec 2100S & Adaptec 3200S with Success. I was not able to use the Mylex AcceleRAID 352 at all, I was able to use the ATTO UL3D but I had to build the Array in another system and move it into the Tyan board to install Win2K Server on, after that it worked perfectly. I did have 1 Tyan K7 board die on me, it worked for a short time, then completely lost video-both onboard and using a video card, I could get no video what so ever, I RMA'd that board, the replacement works fine. I also had a NMB 460watt Power supply blow up on me, I turned the system on and the power supply 'POPPED' and quit working, luckily it didn't damage the board or the CPU's. I am very surprised that Tyan didn't test more SCSI RAID controllers with this new board, seeing as that it is designed for a Server or high-end workstation which will most likely use a RAID sub-system. I thing that we will be waiting a long time for ATTO to correct this problem, if they ever do, hopefully a new Bios Revision from Tyan will correct this problem in the future.
--For anyone using a ATTO UL3D SCSI RAID card-- Has anyone been able to create a array with the UL3D installed in the Tyan K7? What type of problems have you run into? I have not been able to load the Configuration Utility (Ctrl-Z) at start-up-Error-No setup utilities found. Please update flash contents. I tried to update the flash Rom with the utility floppy and it could not detect the Rom chip. If anyone has gotten any further then this, please post your results. Other than this, I am very happy with the stability and performance with this board.
Tyan Thunder K7
2 x 1800AthlonMP
1.5GB ECC Registered PC2100 Crucial
4 x Seagate X15's RAID 0 + 1
Adaptec 3200S SCSI RAID
Elsa GeForce 3
Plextor 12/10/32 SCSI CDRW
Plextor 40X UltraPlex SCSI CDrom
NMB 460watt PS
Lian Li PC 70