Bad performance, what did I forget?

[Pocalypse]

Ok, for kicks try going into your BIOS and disabling hyper threading all together.

I know, its a long shot...

I don't think I'm ready to try that quite yet. I don't want to gimp my system in other respects.

Thanks for all the suggestions though, I'll try some more stuff out tomorrow and this weekend.

[Alptraum]

with nvidia cards you can't SLI if your gonna dual monitor..it dosn't work...IE: why it comes up and asks you which monitor you want to use, if you had say 3 video cards in that system you could SLI 2 of them together to max pump the FPS out..and use your 3rd card for your main..that might provide you a decent solution. I personally haven't tried it yet, but I do have a board that supports 3 cards and also own 3 idential cards.

Ok, no SLI, no crashes, but also no noticable performance gain.

[Maxion]

Indeed, SLI is made to run a single screen with two video cards, if you wanna use more than one screen you'll have to take off SLI and just run one off each card.

[Creazil]

(...)
Run keyclone, run clients 1-5. Entire computer freezes on loading client 2 (on 2nd monitor).
A single press of ctrl-alt-delete forces a reboot.

Reboot, try again, 1 client at a time. First client loads fine (on 2nd screen). Second client, keyclone gives an error about buffer overflow and closes.
Exit client 1, retry keyclone, client 1 loads fine, skip 2, client 3 loads fine, client 4 causes entire computer to crash like earlier.

Reboot, try again without keyclone. Client 1 causes entire computer to crash, this time giving me a blue screen with a stop: error.
(...)

http://forums.nvidia.com/lofiversion/index.php?t82311.html

The problem is the same for the new driver. Aka windowed mode + a few other things makes it fail.

[Pocalypse]

Indeed, SLI is made to run a single screen with two video cards, if you wanna use more than one screen you'll have to take off SLI and just run one off each card.

How can I run a screen off each card?

I was under the impression that without SLI, two monitors would run off the same card, effectively ignoring the second card.

I currently have both monitors connected to the top (primary) card. But I have tried connecting the 2nd monitor to the 2nd card and saw no difference.

http://forums.nvidia.com/lofiversion/index.php?t82311.html

The problem is the same for the new driver. Aka windowed mode + a few other things makes it fail.

Thanks for that link. Hopefully Nvidia is working on some kind of solution.

[Sajuuk]

Are you disabling Sli via software or physically disconnecting the cards? -try removing the connector.
And it can't hurt to try disabling Hyperthreading in the BIOS, like Fursphere said (You can always re-enable it)

[emesis]

Did cap FPS on Alt WoW instance? (both foreground and background caps)
Yes, 45/25 on all slaves, 60/25 on main.

Did you set processor Affinity for each WoW instance?
Yes, 255 for all.

On slaves go 36/20 on slaves. No need to go any higher. (basically you'll tell WoW to stop trying so hard. )

You haven't mentioned if you've tried the above suggestion. Personally, I think this one is huge. While my system is not quite as nice as yours (i'm on an older quad core with 8 gb memory and a GTX8800), it's still pretty decent. I get non-linear performance degradation if I set my maxfpsbk too high. I have it set to something really low like 5, actually. The FPS comes right back up when I switch to a slave and 5 fps is fine for watching follow/placement of your non-mains.

[Catamer]

Vista x64, Nvidia 280
I tried different resolutions on my monitors and it was not good. ( 1920x1080 + 1680x1050 )
I get better performance out of ( 1680x1050 + 1680x1050 )

good luck...

[Bovidae]

While I don't have personal experience with SLI, NVidia claims that with two cards in SLI and two monitors plugged into the main card, It can support 3d gaming on both screens, in windowed more. The caveat is "on supported games"

http://www.slizone.com/object/sli_mu...r.html#display

I can't find a complete list of these supported games on the Nvidia site, but WoW has always displayed the SLI compatible logo, even before they actually did...

[Pocalypse]

You haven't mentioned if you've tried the above suggestion. Personally, I think this one is huge. While my system is not quite as nice as yours (i'm on an older quad core with 8 gb memory and a GTX8800), it's still pretty decent. I get non-linear performance degradation if I set my maxfpsbk too high. I have it set to something really low like 5, actually. The FPS comes right back up when I switch to a slave and 5 fps is fine for watching follow/placement of your non-mains.

I'll try this tonight, along with setting a few more video options to min.


I had a look at that SLI site, and while it claims to support dual monitor 3d in windowed mode, I'm certain SLI is what was causing the crashes.

I have been disabling it through software, haven't touched the cards themselves.