DayZ
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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)
--------------------------------------------------------------------
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, ...)
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 / 4000MHz R.I.P.
16GB DDR3 @1600MHz
120GB SSD
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[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)
[/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
    < >
    203 Comments
    ZC Levi Apr 30 @ 8:42am 
    thats what i was asking
    FUKU fpp > 3rd Apr 30 @ 8:27am 
    but THIS guide is not for AMD :D it is for nvidia cards :D
    ZC Levi Apr 30 @ 8:19am 
    Hi mate, it's the msi 7950
    FUKU fpp > 3rd Apr 30 @ 8:11am 
    hi levi :D lol - it doesnt depend on the manufacturers but on the drivers and the chips themself. usually i would say yes. :) which GPUs do you mean exactly?
    ZC Levi Apr 29 @ 4:17pm 
    can 2 msi gpus work?
    FUKU fpp > 3rd Dec 28, 2016 @ 10:06am 
    my dayz keeps crashing... unplayable.. less than 2 minutes ingmae and it crashes...

    error message: http://prntscr.com/doyyf7

    sli disabled/enabled, shadowplay disabled/enabled, sli profile deleted doesnt work.. -.-

    any suggestions? im right now reinstalling graphic drivers.. but i dont think that will fix it
    NiiTroNiX Dec 25, 2016 @ 8:31am 
    It isn't working anymore. Do you guys know how to fix it? Same hardware like Wait dont schoot. GPU 2 is running at 5% max.
    Wait Dont Shoot Jul 18, 2016 @ 4:38pm 
    Followed all the steps, but still didn't seem to work :'(
    Anyone have anything to add I could possibly try?

    980 Ti Hybrid SLI (Second card is only using about 5%)
    6700k @ 4.5Ghz
    16GB DDR4 Corsair Dominator
    zhen176 Jun 18, 2016 @ 6:21pm 
    ok thanks man.
    Weeddrunken  [author] Jun 18, 2016 @ 2:40am 
    It doesn't matter if you set 2, 3 or 4.
    SLI_PREDEFINED_GPU_NUMBER to 4 means, the game will use the maximal amount of gpus available.