is this possible?

[jstanthr]

You're leaving out quite a bit of details about your set up. Are you using Inner Space with config.wtf virtualization? Are the
correct monitors set within World of Warcraft's game options to each game instance or through Inner Space's game
configuration? Are you using cross-monitor swapping?

Swapping game clients between monitors that aren't driven by the same video card is going to give worse framerates
than if they were using their native monitor/gpu and I'm almost positive that this is a limitation of Microsoft Windows. For
example, you've got GameWindow01 powered by GPU01 on Monitor01 and GameWindow02 powered by GPU02 on
Monitor02. Now, if GameWindow02 swaps over to Monitor01 it's no longer being rendered by GPU02 because GPU02 can't
do anything to Monitor01 since it's not hooked up to it; therefore, GameWindow02 is now being rendered by software
instead of hardware which doesn't give the same framerates.

Also, the GTX 260 doesn't technically support DX11, it just emulates it.

i have 2 cards, non sli, mon1 to main and mon2/card2 to slaves. in wow i have the primary display on slaves set to mon2. i do cross monitor switching and there is sometimes a bit of delay but for the most part no perf dercrease or fps loss other than that initial second. its important though that you have your clients set to the right default monitor. it kinda looks weird when you launch and the slave clients start on 2nd display, bounce to main, resize to their home on 2nd. but that gave me the biggest boost in performance was making the clients set to the right monitor.

[jstanthr]

sorry for the post spam, but i think the reason i don't get a perf hit on cross monitor switching is due to my cpu/ etc. with more cores and faster clock rates, the occasional software rendering becomes trivial, mostly i guess to the fact that wow is more cpu intensive than gpu anyway. you can max all clients out and most of the time never hit 100% on your gpu unless there are like 200+ units to render

[MiRai]

i hate to be the bearer of bad news, but if all your clients are in dx11, then they are ALL running on the 480 and being crossed over to the 260 because no matter what drivers your running the 260 will never support anything above dx9

DX11 is a viable option in the drop-down menu of WoW's Graphics Options while running a GTX 260. I only know this
because I have 2 sitting in my closet. If a card doesn't support DX11 at all (even through emulation) then that drop-
down menu will be completely darkened out (unavailable).

sorry for the post spam, but i think the reason i don't get a perf hit on cross monitor switching is due to my cpu/ etc. with more cores and faster clock rates, the occasional software rendering becomes trivial, mostly i guess to the fact that wow is more cpu intensive than gpu anyway. you can max all clients out and most of the time never hit 100% on your gpu unless there are like 200+ units to render

You could be right about faster CPUs being able to handle software rendering better because I haven't tried it since I
upgraded to this 2600. With this recent discussion I'm tempted to do more testing to see what I can come up with.

[jstanthr]

[QUOTE=MiRai;350642]DX11 is a viable option in the drop-down menu of WoW's Graphics Options while running a GTX 260. I only know this
because I have 2 sitting in my closet. If a card doesn't support DX11 at all (even through emulation) then that drop-
down menu will be completely darkened out (unavailable).

This must have been a recent change. I positively remember looking at that option when i was running 2 pc's and the slave pc having gtx280's in sli, the option was greyed out. i jst turned that box on and now its viable. i apologize for the mis-information