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Ripcord
11-12-04, 10:01 PM
For people that are using windows XP and SP2 turning off dep can fix stuttering in games as dep is done in software at the moment.

right click MY Computer/properties click the Advanced tab
in the start up and recovery box click settings then click edit a notepad page will pop up with some writing in it.

at the end of one of the lines of text you will find a command called /NoExecute= change it so it reads /NoExecute=AlwaysOff then click file and save

close the window and reboot and Dep is now turned off

PS DEP stands for data execution protection and is suposed to prevent some kinds of virus from infecting your computer. just in case your wondering WTF DEP is

rewt
11-12-04, 10:05 PM
For people that are using windows XP turning off dep can fix stuttering in games as dep is done in software at the moment.

It should read "For people that are using Windows XP Service Pack 2..."

*edit - ok I see you fixed it. good job :)

Does it really prevent stuttering? I thought it was just a fix to prevent crashing of games using the Unreal engine?

MUYA
11-12-04, 10:10 PM
and those that have Athlon64s?

mikedep333
11-12-04, 11:20 PM
All the people with athlon 64's and socket 754 Semprons. Perhaps people with the new NX/DEP enabled pentium4's are affected as well.

Also, Ripcord, don't underestimate DEP. It prevents buffer overflow attacks altogether, rendering the majority of IE exploits useless and protecting servers apps from being exploited.

Killrew
11-13-04, 02:12 PM
Tried it, although I have no stuttering issues.

DEP off however improves overall performance:

Aquamark3 DEP On

AvgFPS: 59.904278
MinFPS: 24.606327
MaxFPS: 141.000000
AvgFPSRender: 86.664886
AvgFPSSimulation: 193.846207
AvgTrianglesPerSecond: 18031948
MinTrianglesPerSecond: 3164967
MaxTrianglesPerSecond: 38121938
AquamarkScoreRender: 8666
AquamarkScoreSimulation: 9693
AquamarkScore: 59904

Aquamark3 DEP Off

AvgFPS: 60.174961
MinFPS: 24.606236
MaxFPS: 141.000000
AvgFPSRender: 86.928474
AvgFPSSimulation: 195.431015
AvgTrianglesPerSecond: 18113428
MinTrianglesPerSecond: 3127610
MaxTrianglesPerSecond: 38512984
AquamarkScoreRender: 8693
AquamarkScoreSimulation: 9772
AquamarkScore: 60174

3DMark03:

--- ON ------- OFF ---
10990 11083

Huigie
11-13-04, 02:32 PM
All AMD64 processors, including the AMD Athlon™ 64 FX, AMD Athlon 64, and Mobile AMD Athlon 64 processors, are enabled with Enhanced Virus Protection. With Microsoft® Windows® XP Service Pack 2 (SP2), you will be able to fully utilize the security technology*. By providing extra security at the platform level, AMD lets you easily embrace the future of computing. This technology can deliver added protection for the applications of today and tomorrow. As a result, you can enjoy real peace of mind.

AMD users have buffer overrun protection in hardware.


http://www.amd.com/us-en/Weblets/0,,7832_11104_11105,00.html

iyos
11-13-04, 09:13 PM
All AMD64 processors, including the AMD Athlon™ 64 FX, AMD Athlon 64, and Mobile AMD Athlon 64 processors, are enabled with Enhanced Virus Protection. With Microsoft® Windows® XP Service Pack 2 (SP2), you will be able to fully utilize the security technology*. By providing extra security at the platform level, AMD lets you easily embrace the future of computing. This technology can deliver added protection for the applications of today and tomorrow. As a result, you can enjoy real peace of mind.

AMD users have buffer overrun protection in hardware.


http://www.amd.com/us-en/Weblets/0,,7832_11104_11105,00.html

* Enhanced Virus Protection will by default only protect the user's Windows operating system. Users must, at installation of Microsoft Windows® XP Service Pack 2 or when they first purchase their system, choose to enable the protection of their applications and associated files from memory buffer overrun attacks. AMD and Microsoft strongly recommend that users use third party anti-virus software as part of their security strategy.

Wrong, they have the functionality to *support* it with SP2. If it were hardware enabled, why do you think they say 'with SP2'? They wouldnt, since it would apply to any OS.

Do NOT disable this for 1 fps boost, it's just not worth it.

Huigie
11-14-04, 03:46 PM
:bash: @ iyos : maybe you understand this: moving pictures (http://www.amd.com/us-en/assets/content_type/DigitalMedia/31565A_NX_Anim_for_web.mpg)

See Enhanced Virus Protection in AMD64 processors distinguish a string of malicious code from regular data and treat it as read/write only. The virus is moved from the processor and trapped in the buffer overflow memory space where it is unable to execute and eventually is destroyed.

Huigie
11-14-04, 04:01 PM
Oh and by disabling DEP I can run Ghost9 without it crashing half way and play UT2004 without my machine resetting on quit.