Setting up Sli

[RickRuski]

Hi Katdogfizzow,

Sorry for the slow reply, I have tried "Triple Buffering" but found no visible difference on my system so I left it "OFF'.

[diveplane]

Originally Posted by EZ1

I just got it all set up and and running per instructions from RickRuski. Results: Yes, it runs evenly on both GPUs. Yes, it is pretty smooth but not quite as smooth as single GPU. But, I don't see any performance improvement. I would think SLI isn't going to give us much until they get AA working right.

Thanks again for the info.

sli has always been a bit of a gimmic, never been right since day one that technology many dev teams still over look this feature, how about, or even better introduce x4 cpu support , i know dcs a10c dev team started to introduce multi cpu support , allowing audio to run on one cpu while the other cpu handles the general sim duties.

imo skip sli for now waste of time. rather see multi cpu support first.

[RickRuski]

Don't know how you come to that conclusion Diveplane, have you ever tried Sli??. Just to give you some figures from my system: -


AMD Phenom2 965 x 4 3.4gig
8gig DDR3 Ram
2x GTS 450 Sli (1gig each)
1Tb HDD Partitioned x 5
700w Coolermaster single rail P/S 52a
19" Samsung 931BW monitor
1280 x 960 Resolution

Here is what is happening for me with Sli disabled and enabled running "London Attack" single player track.

Sli disabled: - 30----33 fps (still some micro stutters)

Sli enabled: - 53---56 fps (still some micro stutters)

Load on the graphics cards is about 70% running Sli, about 90% Sli disabled.

Using tracks over the channel I'm am getting fps 90--100 (Sli)

Both cards are running with temps of around 58---59deg

This is with graphics cards that most would consider un-useable with COD. So I personally think Sli is a good option but you must want it to work and it takes a bit of patience to set it up.
There are a lot of games that support Sli and more are being added all the time, I'm sure that the developers will get their Sli support fixed finally.

Cheers

Rick

[jimbop]

Yes, not to mention that video cards will become predominantly multi-GPU just as CPUs have. SLI, or multi-GPU, support is becoming increasingly important and should not be overlooked.

RickRuski, I'll extract the settings later today. Thanks for the helpful attitude.

[diveplane]

Originally Posted by RickRuski

Don't know how you come to that conclusion Diveplane, have you ever tried Sli??. Just to give you some figures from my system: -


AMD Phenom2 965 x 4 3.4gig
8gig DDR3 Ram
2x GTS 450 Sli (1gig each)
1Tb HDD Partitioned x 5
700w Coolermaster single rail P/S 52a
19" Samsung 931BW monitor
1280 x 960 Resolution

Here is what is happening for me with Sli disabled and enabled running "London Attack" single player track.

Sli disabled: - 30----33 fps (still some micro stutters)

Sli enabled: - 53---56 fps (still some micro stutters)

Load on the graphics cards is about 70% running Sli, about 90% Sli disabled.

Using tracks over the channel I'm am getting fps 90--100 (Sli)

Both cards are running with temps of around 58---59deg

This is with graphics cards that most would consider un-useable with COD. So I personally think Sli is a good option but you must want it to work and it takes a bit of patience to set it up.
There are a lot of games that support Sli and more are being added all the time, I'm sure that the developers will get their Sli support fixed finally.

Cheers

Rick

still in its infancy , yes i agree sure they will fix it soon enough, but for greater performance for everyone, my point being the introduction of extra cpu threads, but this involves rewriting code. which should have been taken into account from day one.

[r0bc]

Originally Posted by diveplane

sli has always been a bit of a gimmic, never been right since day one that technology many dev teams still over look this feature,

I've been using SLI since the 8800 series and its always worked well and 99% of games have SLI support on day one

[Bokononist]

Originally Posted by katdogfizzow

Didn't work with my Gigabyte 460s. Still the slow and jittery fps mess. Also did C/P = CPL_HIDDEN_PROFILE_DISABLED, Enable application for Optimus = 0x00000011 and "PhysX settings" = cpu

thanks for sharing, looks like my hardware is a no go with this profile

Same here, two 460's, I've got all the same settings, created a custom profile for Launcher.exe and it doesn;t seem to have an effect, one card going like the clappers @99% and the other between 10 and 14%, it's not a 'jittery mess' but if its working for others I'd like to join the party! What can I have missed?
I'm new to SLI so maybe it's something obvious, any suggestions gratefully recieved. SLI is enabled in nvidia control panel and works like a beast with every other game.
Also, when the official SLI profile becomes available will it automaticaly take precedence or will I have to delete my custom profile?
Thanks in advance,
Boko.

[RickRuski]

Hi Bokononist,

Check your Nvidia CP, see if you have one of your cards set for "Physics". If the answer is YES change it to CPU in the settings. Also each time before you go into COD set your "Inspector" to the correct profile (it tends to reset to "Global") and then "Minimise" Inspector, don't turn it OFF. See if this helps. The reason for this Physics setting see my edited profile settings (28/9/11)

Rick

[Bokononist]

Thanks mate, all working fine now, 60% each card now rather than 99/10!
Your time and suggestions are very much appreciated.

[Ataros]

Originally Posted by Bokononist

Thanks mate, all working fine now, 60% each card now

Why is it only 60%? Does not CloD need more with maxed out settings and res?