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Old 09-25-07, 10:55 AM   #1
mfx4
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Join Date: Sep 2007
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Default GF 7600GS: low performance in UT2004

Hi all,

recently I replaced my old GF FX 5200 card by Gigabyte's GF 7600 GS with 256 DDR2. The point is that I have a very low performance in games such UT2004. According to Windows benchmarks (i.e. see http://www.sharkyextreme.com/hardwar...211_3650821__3) my card should be capable of rendering over 160 FPS in this game (the rest of my box is Athlon64 3500+ 2.2 GHz, 1024 MB DDR400 and ASUS A8R-MVP motherboard). But under Linux I'm unable to achieve more than 50 FPS. When playing on more complex maps (like DM-Junkyard) my FPS is even less than 20, which is very annoying! All details are set to 'normal' and resolution is 1024x768. Neither lowering details nor resolution helps. The same occurs in other games, for example Alien Arena (middle details, middle res., low fps).

I'm running Arch Linux with nvidia drivers 100.14.11-4. The part of my /etc/xorg.conf responsible for video card is as follows:

Section "Device"
Identifier "GeForce7600GS"
Driver "nvidia"
Option "CursorShadow" "on"
VideoRam 262144
Option "NoLogo" "true"
Option "AddARGBGLXVisuals" "True"
Option "RenderAccel" "true"
Option "AllowGLXWithComposite" "true"
Option "NvAGP" "0"
EndSection

My card is PCI-E based, so I set NvAGP to 0 and also put "options nvidia NVreg_NvAGP=0" in /etc/modprobe.conf, but it doesn't have any influence on the rendering speed. I'm using composite extension and turning it off doesn't affect FPS either.

Does anybody have the idea why my card is so slow? It is passively cooled and gets pretty hot while gaming (85-90 C) but I don't think it's a matter of high temperature. Any help will be appreciated.
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Old 09-25-07, 01:20 PM   #2
Linuxhippy
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Default Re: GF 7600GS: low performance in UT2004

What happens if you disable the composite extension + composition manager?

lg Clemens
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Old 09-25-07, 02:37 PM   #3
mfx4
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Default Re: GF 7600GS: low performance in UT2004

Completely nothing - composite extension/manager seem not to have any impact on general performance - still below 30 FPS However, I gained several FPS in game menu ;p
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Old 09-25-07, 02:40 PM   #4
zander
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Default Re: GF 7600GS: low performance in UT2004

Please see http://www.nvnews.net/vbulletin/showthread.php?t=46678.
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Old 09-25-07, 10:41 PM   #5
edman007
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Default Re: GF 7600GS: low performance in UT2004

The composite extension is on by default now, to disable it you have to set it to false or 0, commenting it out does not do it, also the NvAGP "0" slows down the bus (and will probably make it slower too), so comment that out

I had the same problems as you with UT, basically if you enable the stuff that compiz wants then 3d is slow, so start X twice with two separate config files, one with all the options for compiz (if you use that), and then the other with most of the options turned off for games (it changed my fps from about <20 to 60+, and i only have a 6800 and play at 1680x1050 with everything max)
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Old 09-26-07, 05:14 PM   #6
mfx4
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Default Re: GF 7600GS: low performance in UT2004

I've followed your instructions and additionaly turned off cool'n'quiet and it's much better, ranging from 40 to 160 FPS. Thanks!
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Old 09-26-07, 11:23 PM   #7
energyman76b
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Default Re: GF 7600GS: low performance in UT2004

before gaming do:
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
as root

and replace compiz (if it runs) with a different wm (like kwin in kde, metacity in gnome, xfwm in xfce) beryl-manager makes it easy to switch between wms.
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