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How To: Disable ULPS (CFX - Windows 10 - CRIMSON)

post #1 of 26
Thread Starter 
Introduction

ULPS is an ultra low power saving feature which turns off all GPU's except the primary one in use. ULPS can cause crashing / stuttering / reduced scaling when enabled. ULPS is always enabled by default. It can't be fully disabled via software such as MSI Afterburner or Sapphire Trixx (as of 11/01/2016) since AMD Crimson (and some previous CCC versions) changed various reg entries which controlled ULPS. Before following the guide, read the Q & A below.

Solution

1) Click Start - Type regedit.exe and hit enter.
2) In reg editor, press F3 and type EnableULPS, hit enter.

3) Keep pressing F3 until it finds a key called EnableUlps in a sub folder called 0000
4) Double click the reg entry and change value from 1 to 0.

5) Keep pressing F3 until it finds a key called EnableUlps in a sub folder called 0001
6) Double click the reg entry and change value from 1 to 0.

QA

Click Here (Click to show)
Can't I just disable ULPS in MSI Afterburner?
It no longer fully disables ULPS. Trixx also has issues doing so.

Why is the first EnableUlps key set to 0 already?
MSI Afterburner most likely set this key to 0 when you tried to disable ULPS. Just leave it and find the next key required.

Should I reboot after following the guide?
Yes. For settings to take effect.

Will idle power usage increase?
Yes. If that's an issue, change the reg keys back to 1 after a gaming session and reboot.

Any danger?
Yes. Incorrect values can cause software issues. Make backups of files and the registry if you are new to reg edit.

Why disable ULPS?
Some games don't scale well, causing reduced performance, stuttering and system crashes.

Should I have CFX enabled in "Radeon Additional Settings" before following the guide?
It does not matter.

I upgraded/downgraded drivers. Is ULPS still disabled?
No. Follow the guide to disable ULPS once again.

I can see Enableulps_NA, what should I do with it?
Nothing at all, don't touch it.

I'm confused, where and what are these sub folders?
You'll see them on the left hand side. They are like any other folder/directory.

Pressing F3 yields a lot of hits for ULPS, is this normal?

Yes. Don't edit any Ulps keys expect the ones stated.

Can I enable/disable CFX whenever I want after following the guide without breaking anything?
Yes, you are safe to enable/disable CFX at will.

Where are the exact keys found exactly?
Here: HKEY_LOCAL_MACHINE < SYSTEM < ControlSet001 < Class < 4d36e968-e325-11ce-bfc1-08002be10318 < 0000
and
Here: HKEY_LOCAL_MACHINE < SYSTEM < ControlSet001 < Class < 4d36e968-e325-11ce-bfc1-08002be10318 < 0001

UPDATED 19/01/2016 DD/MM/YYYY
Edited by BradleyW - 1/19/16 at 9:34am
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post #2 of 26
Thank You Sir.
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post #3 of 26
Do any of the BF or Crysis series have issues with ULPS also what about CARS?
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post #4 of 26
Thread Starter 
Quote:
Originally Posted by diggiddi View Post

Do any of the BF or Crysis series have issues with ULPS also what about CARS?
From personal experience, yes. It may vary from configuration to configuration.
A good way to tell is if usage is much lower on gpu2 compared to gpu1. If you are reading the usage with MSI AB, disable unified GPU usage monitoring. Unified GPU usage monitoring just mirrors the usage of gpu1 and applies it to gpu2/3/4. I'm sure you can all tell in many ways how and why this is a problem. thumb.gif
Quote:
Originally Posted by ZealotKi11er View Post

Thank You Sir.
You are most welcome.
Thank you.
Edit:
QA Updated and complete.
Edited by BradleyW - 1/10/16 at 6:42pm
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post #5 of 26
Quote:
Originally Posted by diggiddi View Post

Do any of the BF or Crysis series have issues with ULPS also what about CARS?

If you try to OC yes. You will crash Instantly if you pass CCC limits.
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post #6 of 26
Thread Starter 
OP Updated.
Intro and solution added/tweaked.
QA Updated.
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post #7 of 26
Is ULPS only applicable for ATI?
post #8 of 26
Thread Starter 
Quote:
Originally Posted by kevindd992002 View Post

Is ULPS only applicable for ATI?

AMD, yes. Nvidia, no.
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XSPC Chrome Compression Fittings EK RES X3 150 Primochill PremoFlex Advanced LRT Clear 1/2 ID EK-FC (R9 290X) 
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Samsung 840 Pro 120GB EK Supremacy (CPU) NF F12's P/P (360 Rad)  NF A14's (420 Rad)  
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XSPC Chrome Compression Fittings EK RES X3 150 Primochill PremoFlex Advanced LRT Clear 1/2 ID EK-FC (R9 290X) 
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EK D5 Vario Top-X  Phobya G-Changer V2 360mm Phobya G-Changer V2 420mm Win 10 x64 Pro 
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post #9 of 26
Quote:
Originally Posted by BradleyW View Post

AMD, yes. Nvidia, no.

Is there an equivalent feature in NVIDIA cards that we need to disable though?
post #10 of 26
Thread Starter 
Quote:
Originally Posted by kevindd992002 View Post

Is there an equivalent feature in NVIDIA cards that we need to disable though?

I did a quick search and it "seems" all cards operate in 2D clock mode when you are not gaming. There are a few articles about hybrid SLI power saving but that information was posted from 2008, so I'm not sure. I'd ask in the Nvidia section. I only know about AMD CFX and Crimson when it comes to power saving, sorry.
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Samsung 840 Pro 120GB EK Supremacy (CPU) NF F12's P/P (360 Rad)  NF A14's (420 Rad)  
CoolingCoolingCoolingCooling
XSPC Chrome Compression Fittings EK RES X3 150 Primochill PremoFlex Advanced LRT Clear 1/2 ID EK-FC (R9 290X) 
CoolingCoolingCoolingOS
EK D5 Vario Top-X  Phobya G-Changer V2 360mm Phobya G-Changer V2 420mm Win 10 x64 Pro 
MonitorKeyboardPowerCase
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Hard DriveCoolingCoolingCooling
Samsung 840 Pro 120GB EK Supremacy (CPU) NF F12's P/P (360 Rad)  NF A14's (420 Rad)  
CoolingCoolingCoolingCooling
XSPC Chrome Compression Fittings EK RES X3 150 Primochill PremoFlex Advanced LRT Clear 1/2 ID EK-FC (R9 290X) 
CoolingCoolingCoolingOS
EK D5 Vario Top-X  Phobya G-Changer V2 360mm Phobya G-Changer V2 420mm Win 10 x64 Pro 
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