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

(*=plz read section Known Bug)
SLI compatibility bits:
0x02506405 (Crysis, ArmA 2: Operation Arrowhead, ToH, ArmA 3, ArmA 2, ...)
0. Download [] & install the latest NVIDIA Driver
1. Download [] & 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 / 4000MHz R.I.P.
16GB DDR3 @1600MHz
Win 8.1 Pro 64bit
FYI: I got a GTX 970 G1 @ 1.5GHz / 7500MHz (none SLI) so I can't update this guide anymore.

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
  • 344.65 WHQL
  • 344.75 WHQL
  • 347.25 WHQL
  • ... (till NVIDIA creates a proper driver)
My In-Game Settings
Improve Performance Tips
  • install DayZ on a SSD
  • Unpark[] your CPU cores (note: u only have to do this once)
  • Download & run Core Parking Manager[] (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)
[/i] 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...
  • [/list]
    in general: SLI does not double the amount of available VRAM!
    Comparison Screenshots
    Standard Nvidia Settings @38,8fps
    SLI Fix Profile @74,7fps
    Standard Nvidia Settings @32fps
    SLI Fix Profile @61,5fps
    Known BUG
    Unfortunately when we're in a village, our frames drop massively.
    FYI I got the same frame drops in villages with a single gpu! (GTX 970 G1)

    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
    < >
    Lurch Jul 27 @ 3:39pm 
    Definitely still works. Unfortunately I saw very little change in the towns. But had a huge increase of performance in the northern regions of the map.
    Euphoria Jul 18 @ 6:32am 
    @Roc' | Selling KEYS and useless... -.-

    Guys, it definitely 100% still works. You must be doing something wrong or missed something in the guide.
    Snack Jul 3 @ 1:04am 
    Is the test rig using 4 460s? if not why is the gpu count set to 4?
    somebuddy Jun 29 @ 12:37pm 
    Got two GTX 970 from Zotac. I followed the guide but for some reason there is always 0% on the second GPU. Driver Version 353.30 :(
    RocCckA Jun 24 @ 11:36pm 
    Yeah, for some reason, seems that I cant get it working. Running on driver 350.12. Get an error saying that the changes can be made to the game. Yes, I have admin abilities.
    Euphoria Jun 23 @ 7:18am 
    @MaSTeRsans - Nope, it definitely still works. You must be doing something wrong or missed something my friend.
    Sans May 19 @ 3:12pm 
    Cant get this to work, latest nvidia drivers, sli gtx 770, followed everything exact, and re installed teh driver?

    Anyone else with the issue,
    loki1944 Mar 23 @ 4:54pm 
    ok, thanks man
    Weeddrunken  [author] Mar 23 @ 11:13am 
    AMD 6core
    -cpuCount=4 -exThreads=5*
    INTEL 6Core (e.g. i7 5820K)
    -cpuCount=6 -exThreads=11*

    * 1thread is for win
    loki1944 Mar 22 @ 3:40pm 
    for the cpu count, what would you set for a 6 core processor? -cpuCount=6 -exThreads=7 -maxVram=3072?