Unfortunately 4 DIMM 12GB 2000MHz blue screens when starting 3dmark vantage in Windows 10.
The screenshot above of 24Gb @ 1600MHz is the best I was able to do in Windows 10. The Mushkin sticks don't seem to hold out as well in Windows 10 vs XP where their total capacity was not usable.
Windows 10 also allows me to play with 2 and 3 way SLI with 780 Ti unlike XP where only 1 is usable.
As expected when two cards are loaded for SLI usable memory combos become even trickier. The patriot memory is the only combo that I can get working with 4 DIMMs.
3 way SLI reposts half way though vantage for me which is likely a PSU issue given that I am using a 1KW PSU from 2008.
I have a 1.2KW PSU that I could use and others that I could use for double PSU but I'm not interested in 3 way 780 TI SLI long term so I'm moving back to XP.
Windows 10 is installed an a second SSD so if
anyone would like something tested I can go back quickly.
The next thing on my list is to get 8800 Ultra SLI working but one of the GPUs is DOA so its baking time at least it was only $30.
I plan on playing with 3 way 8800 Ultra SLI in Vista when/if I get three working cards but that might be awhile.
Edit: I tried baking twice both times at 385 for 10 mins.
The first time it took the system from displaying a black screen in XP to being able to run SLI and complete 3dmark 06 but 3d shows strange purple and red colors.
The second time instead of taking the GPU out of the oven and letting it rest for 30 mins I turned off the oven and left it partially open to allow it to come down to room temp slower. I waited 30 mins this time as well.
The second 8800 Ultra now lives and 06 completes with no artifacts.
My next plans are to refresh thermal grease and replace all the memory and vrm pads on both 8800 ultras as they are running very hot.