The following Update has just been posted to the review at AnandTech:
"UPDATE 2/05/2005: nVidia has acted to prevent, or at least make it more difficult, to mod the Ultra board to SLI. First, DFI has advised us, and posted on their website, that they will NOT sell the SLI bridge to buyers of the Ultra board. Second, nVidia has advised us that future shipments of the Ultra chipset have been modified so that the mod to SLI will no longer be possible. An additional side effect of this second action is that the "Dual Video" mode, which performs at about 90% of SLI performance levels, will only work with early nVidia drivers 66.75 or earlier. If you do a quick check of web driver postings you will see it is now very difficult to find 66.75 drivers. With a chipset modded to SLI the "Dual Video" mode worked through 70.xx versions of the nVidia driver. nVidia also made it clear they will continue to make driver changes to prevent operation of any "non-standard" (8X/8X) operation of their SLI driver. This also throws into question whether the VIA "dual graphics" mode on the 894 Pro chipset will ever work with nVidia graphics cards. If you are interested in the current UT Ultra-D we suggest you buy one now if you can find it. Future versions of the UT Ultra-D will not have the same capabilities as a result of these actions."
Frankly, nVidia's actions are surprising, since nVidia was in a winning position no matter what the buyer did. Buyers who modded the Ultra to SLI would buy two nVidia video cards, since they are the only current video cards that will work in SLI mode, and nVidia profited from the sale of 2 video cards. We really expected nVidia would lower the price of the SLI chipset and discontinue Ultra. Directions will undoubtedly change again when the upcoming ATI "Dual Video" chipset makes it to market.
http://download.nvidia.com/Windows/n...QL_english.exe