Vista+SLI problems

I just bought a Vista Home Premium 64bit computer and am running with 2 MSI
8800 GTX video cards. The problem is, video games run slower with SLI
enabled, much much slower. Turning off SLI significantly speeds the system
up.

I was wondering if anyone knew anything about this effect and if there is
any work around? I dont like owning a $500+ piece of worthless hardware in
my machine.

Any help or suggestions would be greatly appreciated.

Ron

What graphical settings have you tried in Nvidia Control Panel and which
games are you getting worse performance in?

"Ronis" <> wrote in message
news:6CA49B41-4FEB-4C11-80B1-...
>I just bought a Vista Home Premium 64bit computer and am running with 2 MSI
> 8800 GTX video cards. The problem is, video games run slower with SLI
> enabled, much much slower. Turning off SLI significantly speeds the
> system
> up.
>
> I was wondering if anyone knew anything about this effect and if there is
> any work around? I dont like owning a $500+ piece of worthless hardware
> in
> my machine.
>
> Any help or suggestions would be greatly appreciated.
>
> Ron

Do your games have a built-in SLI Profile or are they SLI optimized?
See the following: http://www.slizone.com/object/slizone2_game.html

Also see: http://www.directron.com/whatissli.html

SLI Zone User-to-User Forums:
http://forums.slizone.com/index.php?showforum=4

--
Carey Frisch
Microsoft MVP
Windows Shell/User

---------------------------------------------------------------

"Ronis" <> wrote in message news:6CA49B41-4FEB-4C11-80B1-...
I just bought a Vista Home Premium 64bit computer and am running with 2 MSI
8800 GTX video cards. The problem is, video games run slower with SLI
enabled, much much slower. Turning off SLI significantly speeds the system
up.

I was wondering if anyone knew anything about this effect and if there is
any work around? I dont like owning a $500+ piece of worthless hardware in
my machine.

Any help or suggestions would be greatly appreciated.

Ron

Ronis wrote:
> I just bought a Vista Home Premium 64bit computer and am running with 2 MSI
> 8800 GTX video cards. The problem is, video games run slower with SLI
> enabled, much much slower. Turning off SLI significantly speeds the system
> up.
>
> I was wondering if anyone knew anything about this effect and if there is
> any work around? I dont like owning a $500+ piece of worthless hardware in
> my machine.
>
> Any help or suggestions would be greatly appreciated.
>
> Ron


There can be conflicts with cards plugged into ordinary PCI slots when
PCIE slots are in use, your MB docs may have something on this or the
website... You could just try locating any PCI card you have in a
different slot.

You could also go into BIOS and find the setting for Plug and Play OS
(Y/N) and try setting it to N. (If there is one in your BIOS)

I had 2 X 7950s and the extra speed, about 5% wasn't worth the hassle
because switching between XP and Vista forced me to crawl under the desk
and swap connectors, under XP the cards were one way around, under Vista
the opposite, and no way with either setup with SLI engaged could you
get sensible resolutions, we're talking 640 X 480 here, you had to swap
the connectors

I gave up and put one card in another machine when it's overclocked BFG
card melted.

You might ask in the games group also, a lot of people find problems
when demanding performance and that would be the place. Obviously
drivers play a part so maybe it's a known problem.

I have not tinkered with any control panel settings as I really dont know
what they do.

Im playin Everquest which is not SLI optimized as far as I know.

If there is a setting I should be aware of or can try direct me to it.

Thanks,
Ron


"Carey Frisch [MVP]" wrote:

> Do your games have a built-in SLI Profile or are they SLI optimized?
> See the following: http://www.slizone.com/object/slizone2_game.html
>
> Also see: http://www.directron.com/whatissli.html
>
> SLI Zone User-to-User Forums:
> http://forums.slizone.com/index.php?showforum=4
>
> --
> Carey Frisch
> Microsoft MVP
> Windows Shell/User
>
> ---------------------------------------------------------------
>
> "Ronis" <> wrote in message news:6CA49B41-4FEB-4C11-80B1-...
> I just bought a Vista Home Premium 64bit computer and am running with 2 MSI
> 8800 GTX video cards. The problem is, video games run slower with SLI
> enabled, much much slower. Turning off SLI significantly speeds the system
> up.
>
> I was wondering if anyone knew anything about this effect and if there is
> any work around? I dont like owning a $500+ piece of worthless hardware in
> my machine.
>
> Any help or suggestions would be greatly appreciated.
>
> Ron

"Ronis" <> wrote in message
news:6CA49B41-4FEB-4C11-80B1-...
>I just bought a Vista Home Premium 64bit computer and am running with 2 MSI
> 8800 GTX video cards. The problem is, video games run slower with SLI
> enabled, much much slower. Turning off SLI significantly speeds the
> system
> up.
>
> I was wondering if anyone knew anything about this effect and if there is
> any work around? I dont like owning a $500+ piece of worthless hardware
> in
> my machine.
>
> Any help or suggestions would be greatly appreciated.
>
> Ron


If you have XP, I'd dual boot to XP.
That's what I do.
If you don't have it, its worth the $100 to buy XP.

Vista, games, and SLI don't give good performance yet.
If I turn on SLI for "global settings"....even the Vista Mahjong games gets
jittery.

forty-nine wrote:
> "Ronis" <> wrote in message
> news:6CA49B41-4FEB-4C11-80B1-...
>> I just bought a Vista Home Premium 64bit computer and am running with
>> 2 MSI
>> 8800 GTX video cards. The problem is, video games run slower with SLI
>> enabled, much much slower. Turning off SLI significantly speeds the
>> system
>> up.
>>
>> I was wondering if anyone knew anything about this effect and if there is
>> any work around? I dont like owning a $500+ piece of worthless
>> hardware in
>> my machine.
>>
>> Any help or suggestions would be greatly appreciated.
>>
>> Ron
>
>
> If you have XP, I'd dual boot to XP.
> That's what I do.
> If you don't have it, its worth the $100 to buy XP.
>
> Vista, games, and SLI don't give good performance yet.
> If I turn on SLI for "global settings"....even the Vista Mahjong games
> gets jittery.


Really? I must admit I though SLI at $350 a card was not cost effective,
but the damned plug swapping I had to 2 because XP like 2 of the 4
monitor outputs but Vista only liked the opposite 2 was so much nuisance
that eventually I took the second 7950 out again.