Reply 60 of 109, by sdz
At 800x600@60 the FBI still outputs 24bpp to the RAMDAC, even in SLI, as it was expected. There also seems to be something wrong with at least 1 TMU on the master side (it's electrically identical to the right side, which works fine, so either some bad soldering or bad TMU/RAM).
At the moment the card is still running with the internal video clock as a reference, as it made no difference when locking on the external one. Maybe this is not true for SLI operation.
I also tested with 2 regular Voodoo 2 cards in SLI and the HDMI add-on card (this uses the FBI vidclk as a reference), and it works properly:
And a bit of an odd thing, measured on the regular Voodoo 2 cards. When running a single card, the memory clock is set at 90MHz, when running in SLI it's lowered to 85MHz. Might be different with different drivers.