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Old 07-27-05, 07:51 PM   #1
funaho
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Default BFG 6200OC 256mb, curiously poor performance

Greetings,

I'm currently struggling to track down poor performance on my system. I've been trying to track this down for several months, spanning two video cards (FX 5600 that died, and the 6200 that I have now) and two versions of Fedora (FC3 and FC4).

First some background:

Machine is a Celeron D 2.8 GHz, Intel 865PERL mobo
1 GB DDR400 RAM
FC4 (kernel 2.6.12-1.1398_FC4)
BFG Tech GeForce 6200OC 256 mb
NVIDIA 76.67
Samsung 17" flat panel (it's not DVI, so it's on the analog port)

Running glxgears rarely produces more than about 1500 fps; in fact it's usually 1300-1500. From my extensive googling it seems this is awfully low, even for a 6200 which I know is a budget card. While running glxgears uses 99% CPU though perhaps that's normal.

The problem especially manifests while playing WoW, which takes up 99% CPU and though playable it "hestitates"...it'll run ok for a second or so, pause briefly, then keep going. I play at 1280x1024, the native res of my flat panel display. I have tried turning every single setting to its lowest value and it does not help.

Now, my first instinct is to blame WoW, or Cedega, but on my laptop, which is a lowly Pentium M 2.0 with a 128 meg Radeon X300, I can play WoW at 1920x1200 and it does NOT have this problem, and only eats about 3% CPU while running. Since I copied my WoW install and configuration from my desktop to my laptop it is quite literally the same software setup, just changed to a different resolution.

Since I had problems under my previous card, a GeForce FX 5600, I don't think it's my card either. Back when I had the 5600 I even tried downgrading to 66.29, which did not help. Since I now have a 6200 I can't back up anyway since the card isn't properly supported under earlier versions.

I normally use AGPGART, but I also tried rebooting with "agp=off" and using the NVIDIA agp driver, which did not help -- in fact glxgears lost a good 100 fps.

I've googled for hours and found nothing that seems to help. Any ideas? Or am I just barking up the wrong tree and my video card really does suck that badly?
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Old 07-27-05, 08:58 PM   #2
zachary
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Default Re: BFG 6200OC 256mb, curiously poor performance

Looking at pictures of that card, I see there is no HSI bridge. So it would appear your card has one of the newer(****ty) nv44a chips I believe they're called. Stock my 6200 that does have an HSI bridge pulled over 3000.
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Old 07-27-05, 09:56 PM   #3
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Default Re: BFG 6200OC 256mb, curiously poor performance

Turn of renderacceleration if you have it enabled. That helped me a great deal, it also sovled the stuttering problem (which seems to happen when using openGL mode of WoW on Nvidia agp cards). I run WoW at windows 1280x1024 on a AGP FX 5700 256MB card. And it does fine. After a while (like several hours play) it will start stuttering and I have to reboot my machine which then allows the game to play smoothly for another few hours.

Also the glxgears settings on the AGP cards on the newer FC4 seems to be very misleading. On my system (which has a PCI 5200 and an AGP 5700) the pci card get's about 10-20% better numbers than the AGP card. Makes no sense, but game play is definetly faster on the AGP card than the PCI card.
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Old 07-28-05, 02:59 AM   #4
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Default Re: BFG 6200OC 256mb, curiously poor performance

Quote:
Originally Posted by funaho
Machine is a Celeron D 2.8 GHz, Intel 865PERL mobo

on my laptop, which is a lowly Pentium M 2.0
Not taking the gfx cards into account for a couple of secs, your assumption that a Pentium M 2.0 is a lower performing part than the Celeron D 2.8 is completely wrong.

I suggest you to take a look at this review :
http://www.anandtech.com/cpuchipsets...oc.aspx?i=2342 and in particular at the gaming benchmarks on page 15 : http://www.anandtech.com/cpuchipsets...px?i=2342&p=15 ...

You will be surprised at what the P M is able to achieve
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Old 07-28-05, 05:06 AM   #5
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Default Re: BFG 6200OC 256mb, curiously poor performance

Heh, a Pentium M @ 2ghz is able to whip even some of the fastest P4's. I would not call it lowly. :P
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Old 07-28-05, 08:57 AM   #6
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Default Re: BFG 6200OC 256mb, curiously poor performance

Can you post your xorg.conf?
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Old 07-29-05, 07:17 PM   #7
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Default Re: BFG 6200OC 256mb, curiously poor performance

Ok well processor horsepower side, I cannot believe my notebook is SO much more powerful that it can do with 3% CPU what takes the desktop machine nearly 100% CPU.

Anyway, as requested here is my xorg.conf. It's fairly run-of-the-mill (and please disregard the fact that the video card description says GeForce FX; that was the old card that died and I never updated the description to match.

Code:
# XFree86 4 configuration created by pyxf86config

Section "ServerLayout"
        Identifier     "Default Layout"
        Screen      0  "Screen0" 0 0
        InputDevice    "Mouse0" "CorePointer"
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"

# RgbPath is the location of the RGB database.  Note, this is the name of the
# file minus the extension (like ".txt" or ".db").  There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
        RgbPath      "/usr/X11R6/lib/X11/rgb"
        ModulePath   "/usr/X11R6/lib/modules/extensions/nvidia"
        ModulePath   "/usr/X11R6/lib/modules/extensions"
        ModulePath   "/usr/X11R6/lib/modules"
        FontPath     "unix/:7100"
EndSection

Section "Module"
        Load  "dbe"
        Load  "extmod"
        Load  "fbdevhw"
        Load  "glx"
        Load  "record"
        Load  "freetype"
        Load  "type1"
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
#       Option  "Xleds"         "1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
#       Option  "XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults).  For example, for a non-U.S.
# keyboard, you will probably want to use:
#       Option  "XkbModel"      "pc102"
# If you have a US Microsoft Natural keyboard, you can use:
#       Option  "XkbModel"      "microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
#       Option  "XkbLayout"     "de"
# or:
#       Option  "XkbLayout"     "de"
#       Option  "XkbVariant"    "nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
#       Option  "XkbOptions"    "ctrl:swapcaps"
# Or if you just want both to be control, use:
#       Option  "XkbOptions"    "ctrl:nocaps"
#
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "us"
EndSection

Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "IMPS/2"
        Option      "Device" "/dev/input/mice"
        Option      "ZAxisMapping" "4 5"
        Option      "Emulate3Buttons" "yes"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "SyncMaster"
        DisplaySize  340        270
        HorizSync    30.0 - 81.0
        VertRefresh  56.0 - 75.0
        Option      "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "nvidia"
        VendorName  "Videocard vendor"
        BoardName   "NVIDIA GeForce FX (generic)"
#       Option      "ConnectedMonitor" "CRT-1"
#       Option      "NvAGP" "1"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     16
                Modes    "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

Section "DRI"
        Group        0
        Mode         0666
EndSection
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