Stefan,

That's interesting to read, as I've always heard just the opposite about nVidia cards, and could have sworn I read something similar to that on their website, about how most only have 1 LUT. Right or wrong I don't know, but I've also read that if a card has dual LUTs, it will show up in the Display Manager as two separate graphics cards, and I have seen that to be true with an ATI card I've got, yet not true of my nVidia.

Under XP, I successfully use the Windows Color applet to load independent profiles for my monitors, and that sure seems to find my system behaving as if it has two LUTs. The Vista Color Management panel is a beefed-up version of that it seems.

Mind you, I'm not debating what you say is true, but only that I've read differently and would welcome any links directing me to facts. At present, the only thing I find on the nVidia site comes from a search of their FAQ/Knowlege Base, where I found only one question on the topic:

Question:
Does NVIDIA support (LUT) Look Up Tables for display calibration using ICC profiles?

Answer:
Yes, you can load an ICC profile for the primary/single monitors, and use a professional publishing application to perform color matching based on information in the ICC profiles. To use two ICC profiles for separate monitors, you will need an additional graphics card installed on your PC, one for each additional monitor.

Of course, as you see, the neither the question nor answer ask specifically about Dual LUTs, but as the topic was updated in May '07, and the nVidia reply states the need for an additional graphics card for each monitor, that suggests there is only one LUT per card...although admittedly, they fail to mention dual-head cards. In short, this question doesn't really address the details we're looking for.

Regards,

Daryl

Max_Buten

Replied in the following topics

What video card for 2 LCDs, 2 LUTs? (Vista)