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DayZ SLI Fix (How to enable SLI)
By Weeddrunken
This Guide shows you how to enable SLI for DayZ... [NVIDIA only]
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SLI Fix
Settings:
1920x1080 (FullScreen)
& VSync Off (primary only for checking if SLI works)
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GPU Scaling:
Before: GPU1= 98%; GPU2= 9%
After: GPU1= 98%*; GPU2= 98%*

(*=plz read section Known Bug)
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SLI compatibility bits:
0x02506405 (Crysis, ArmA 2: Operation Arrowhead, ToH, ArmA 3, ArmA 2, ...)
Tutorial
0. Download [www.nvidia.com] & install the latest NVIDIA Driver
1. Download [www.guru3d.com] & open NVIDIA Inspector
(note: also extract "CustomSettingNames_en-EN.xml")
2. Go to Driver Profile Settings

=> Set Global Driver Profile to DayZ
2.1 Then set SLI compatibility bits to 0x02506405 (Crysis, ArmA2: Operation Arrowhead,...)
2.2 & set all other settings as shown below... => Apply changes
3. Enjoy DayZ with SLI enabled
Attention (Installing a new Nvidia Driver)
Unfortunately after installing a new Nvidia Driver, you have to set your SLI Profile again!
(Even with the Express Installation...)
=> BUT you can "prevent" that by Exporting all customized profiles and Import them back after the new Nvidia Driver is installed!
(Test-) System Specs:
i5 2500K @4500MHz
GTX 460 SLI @840MHz / 2000MHz
16GB DDR3 @1600MHz
120GB SSD
Win 8.1 Pro 64bit

Tested on the following NVIDIA Drivers:
  • 331.93 Beta
  • 332.21 WHQL
  • 334.67 Beta
  • 334.89 WHQL
  • 335.32 WHQL
  • 337.50 Beta
  • 337.88 WHQL
  • 340.43 Beta (2nd monitor produced win8.1 bluescreen)
  • 340.52 WHQL
  • 344.11 WHQL
My In-Game Settings
Improve Performance Tips
  • install DayZ on a SSD
  • Unpark[www.coderbag.com] your CPU cores (note: u only have to do this once)
  • Download & run Core Parking Manager[coderbag.com] (I am using 4.5)
    => Before starting DayZ set it to 100%, after back to 5%...
  • write the following line, depending on your specs, in the Launch Options of DayZ(properties)
  • i3 +1GB VRAM:
    -cpuCount=2 -exThreads=3 -maxVram=1024
    i5 +2GB VRAM:
    -cpuCount=4 -exThreads=3 -maxVram=2048
    i7 +3GB VRAM:
    -cpuCount=4 -exThreads=7 -maxVram=3072
    AMD FX8/9xxx +2GB VRAM:
    -cpuCount=4 -exThreads=7 -maxVram=2048

  • set Single Display Perfomance Mode for DayZ in the NvidiaControlPanel
  • set Texture filtering - Quality to Performance for DayZ in the NvidiaControlPanel
  • disable Vsync ingame
  • regular use of Ccleaner, Spybot, actual Chipset&Graphics drivers, WinUpdates,...
  • Win 8.1 RAM Error "not enough memory available" FIX (in case you have 8GB/16GB+)
    (open) type regedit.exe on the Win8.1 start/app screen
    in the registry editor find HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Ndu
    there you right click Start &choose change, then set the Start value to 4
    => this helped Beerdrunken eliminate lags/low fps in almost any game (i7 4770K,R9 290X,16GB DDR3 2400MHz) He noted that his system memory didn't empty by itself e.g. after stop playing a game or 2 or 3 & ran full...
in general: SLI does not double the amount of available VRAM!
Comparison Screenshots
Standard Nvidia Settings @38,8fps
SLI Fix Profile @74,7fps
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Standard Nvidia Settings @32fps
SLI Fix Profile @61,5fps
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Known BUG
Unfortunately when we're in a village, our frames drop massively.

Nature: GPU1= 98%; GPU2= 98%
Village: GPU1= 52%; GPU2= 52%

--------------------------------------------------------------------
Nature => GPU1: 98% GPU2: 98%
Village => GPU1: 78% GPU2: 78% (best measured)
Village => GPU1: 38% GPU2: 38% (worst measured)
--------------------------------------------------------------------
Possible Reasons
  • CPU can't handle the load of houses correctly: CPU Bottleneck (=engine has to be optimized)
    and / or
  • Nvidia has to integrate a real DayZ SLI profile
--------------------------------------------------------------------
Nature GPU1= 98%; GPU2= 98%
Village GPU1= 50%; GPU2= 50%
--------------------------------------------------------------------

PLZ Rate if you like... :)

& follow me for more SLI Fix Guides => click
146 Comments
< >
LeTraKeuR 14 Oct @ 3:16am 
Hello,
Where can i find Performances Tips?
In Nvidia Inspector?
Thanks for all.
Weeddrunken  [author] 11 Oct @ 3:34am 
Updated Guide
"Performance Tips"
added Core Parking Manager
=> this sets your cpu cores to a 100%usage
Weeddrunken  [author] 29 Sep @ 7:15am 
@Hitt0r:
everything seems as usual...
Hitt0r 28 Sep @ 3:31pm 
Using 344.16 WHQL.
Hitt0r 28 Sep @ 3:27pm 
-cpuCount=4 -exThreads=3 -maxVram=4096 -skipintro -nosplash

i5 4670k @ 4.2
16GB DDR3
2 x GeForce 970's o/c 1433 (Boost) SLI

Playing @ 5760 x 1080 @ 40fps in berezino with the following settings:

http://s21.postimg.org/3ubugaxmf/screenshot_186.jpg
http://s21.postimg.org/tr5isx19z/screenshot_187.jpg
http://s21.postimg.org/ue4fify5z/screenshot_185.jpg
http://s21.postimg.org/bkimlfzxz/screenshot_184.jpg

Any suggestions?

Confirmed both GPU's 99% Nature, 40% - 60% in towns.
Weeddrunken  [author] 24 Sep @ 2:53pm 
@Euphoria:
Last and least;
have you tried to explain your problem; GTX690 $$/performance vs. GTX680 $/perf. to NVIDIA?
One hint never buy an expensive gpu by nvidia ;) That's what I had to learn when I bought 2x 8800 GTX, and they never really worked in sli properly - but the price tag was so high that I thought it should... :(
In the end maybe you really have to wait for the proper sli profile by nvidia, if they do one...
Swatmat 22 Sep @ 9:28am 
cheers weeddrunken, decided to wipe all traces of nvidia driverd from my system and start from scratch, worked like a treat, i now have sli fully functional again. keep up the good work!!!
Euphoria 22 Sep @ 7:17am 
Thanks for getting back to me Weeddrunken, appreciate it.

The thing is, disabling SLI and running on only 1 GPU does increase the GPU usage by 10-20% but my FPS drops by around 10fps in all areas of the map.
My CPU is a i7 3770k @ 4.6GHz but I have tried running it at my maximum "Suicide" overclock of 4.9GHz and it only made a tiny difference to my FPS.
My GPU is a GTX 690 (Dual GPU Card), effectively 2x 680's and it has a pretty beefy OC as well. I have tried running the card at stock clock but it reduced my FPS.
I have also tried every driver from 335.23 to 344.11, but it makes no difference.

Completely confused to what's going on. Friends of mine with GTX 670/680's/7950/280x's get slightly better FPS than me, and my nephew with 660Ti SLI gets much better FPS than me at the same settings and resolution :'(
Weeddrunken  [author] 22 Sep @ 2:35am 
@Euphoria:
This totally sounds like the known bug/bottleneck...
Which GPUs & which CPU do you use?

4k resoultion = gpus' usage finally @90%
=> If you have a GTX780 or comparable/higher, this means U have too much gpu power for this game :D => deactivate SLI and use nvidia standard settings...until a proper SLI profile is released OR play in 4K

PS: The latest nvidia driver&DayZ update gave me a little fps boost in towns&buildings (feels much smoother now)
Euphoria 20 Sep @ 2:29pm 
Hi Weeddrunken, could you offer me any advice at all please.

DayZ is a pain in the butt for me. I have SLI enabled by following this guide (Thank you for this guide by the way), but my GPU usages hovers around 20-25%, 30% Max.
The weird thing is, if I bump up the resolution from 1080 to 2560x1440, I get "Zero" FPS lose, but my GPU's usage goes up to 40-50%, the same thing happens with bumping it to 4k, I lose a few FPS with this setting, seems to be around 3-6fps drop, but my GPU's usage goes up to 80-90% :-\

Really weird. My CPU usage is only around 50%, RAM usage around 6GB overall, VRAM never more than 75% usage....... I can't understand it.
I know it's an Alpha and it's not optimised, but it just seems to really hate my PC :(