Ryzen supports ECC RAM if the BIOS enables it. So far I have not heard of a BIOS that does so. But vendors are currently working to improve memory compatibility, so maybe ECC support will come on some boards too.
Regrading the 1080Ti: I guess its PPD/Watt will be a little bit lower than the 1080's, at least at stock settings, and only considering the consumption of the card and not that of the host PC. I am thinking so because
One aspect of the 1080Ti which intrigues me as an owner of a µATX X79 board: The reference card comes without DVI connector. It is thus a bit easier to turn into a single-slot card. (No need to saw of or de-solder the DVI; just cut the slot plate and put on a fullcover waterblock.) On the other hand, Nvidia is accepting only order quantities of 2 cards per purchase (here in Europe at least), so this alone is a hurdle to get more than two cards into a µATX system such as mine quickly.
Actual availability of the 1080Ti looks to remain just as elusive as the Titan XP at least throughout March; I wonder if it will get better later. The fact that not just shaders but also ROPs, cache, and memory controllers are being cut down in the Ti, and that the Ti will be made available to board partners, and that the HPC market had now already about a year of supply with GP102, indicates that supply of the Ti could be better than that of the Titan XP. But demand will be a magnitude higher too...
Regrading the 1080Ti: I guess its PPD/Watt will be a little bit lower than the 1080's, at least at stock settings, and only considering the consumption of the card and not that of the host PC. I am thinking so because
- the 1080Ti is a salvaged part, whereas the 1080 is a top-bin fully enabled part;
- heat output per card is obviously higher on the 1080Ti than on the 1080, hence the 1080Ti will tend to develop higher temperatures in steady state unless a much better cooling solution is being provided. Higher chip temperature means lower GPU frequency at same GPU voltage, therefore less efficiency (architecture and process node being equal).
One aspect of the 1080Ti which intrigues me as an owner of a µATX X79 board: The reference card comes without DVI connector. It is thus a bit easier to turn into a single-slot card. (No need to saw of or de-solder the DVI; just cut the slot plate and put on a fullcover waterblock.) On the other hand, Nvidia is accepting only order quantities of 2 cards per purchase (here in Europe at least), so this alone is a hurdle to get more than two cards into a µATX system such as mine quickly.
Actual availability of the 1080Ti looks to remain just as elusive as the Titan XP at least throughout March; I wonder if it will get better later. The fact that not just shaders but also ROPs, cache, and memory controllers are being cut down in the Ti, and that the Ti will be made available to board partners, and that the HPC market had now already about a year of supply with GP102, indicates that supply of the Ti could be better than that of the Titan XP. But demand will be a magnitude higher too...