Your card should have 16 pipes. The fuses are "correct" and on BIOS level everything is OK for 16 pipes. The only advice from my side will be to uninstall (fully) and re-install ATITool. After that you should see 16 pipes.

Dolf,

I was wondering if you have any idea if theres a bios that can be flashed for my new card. I had an x800gto that came unlocked at 16pipes which just died 2 days ago out of the blue. I picked up off ebay a new x800xt aiw pal version for fairly cheap considering I only needed something that would last til I build my own system with pcie. However, upon starting the computer up with it and checking it out in ati tool, ive found it to have only 12 pipes though EVERY place I checked on the card that listed its specs online said it came with 16 pipes. Its got the r420 core and has the xt clocks at 500/500 and I can jump up to about 518/540ish, but id really like those extra pipes if possible. Heres the readout from the lines with atil tool:

config die fuses 0xEFF7FFFF
config substrate fuses 0xFFFFFF9F
config rom fuses 0x20
gb pipe select 0x3FE4

Please let me know anything you know.
Thanks
John