http://www.tyan.com/support/html/pc2100_tg_mp.html

Special Note

The Tyan Tiger MP (S2460) requires REGISTERED DDR MEMORY in order to POST.
Please see the power supply special note.
Some modules on the list above contain stacked DRAM parts (36 chips per module). These parts have thermal limitations in some chassis configurations. It is advised to verify that your chassis configuration as adequate airflow to support stacked (36 chip) parts. *
Tyan recommend a maximum of 6 banks (loads) be used at one time.
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It seems Tyan did mentioned about six bank issue anout the RAM..