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refresh rates and fps

I have an amd k6/2 500, asus p5a mb, udma33 hdd, 128 sdram @ 100mHZ and a voodoo 3 2000 16 meg agp.
When I run the game motocross madness, my frame rates will jump from 55-60 down to 25-35 and then back up again causing the game to play very choppy.  My monitor is a viewsonic ea771 17” and the refresh rate is set to adapter default.  I tried all the refresh rates, 85 mHz being the highest and different resolutions in the game,  all with the same results.
This video card replaced a creative labs voodoo banshee 16 meg agp which ran much better.  I thought the voodoo 3 was a more advanced chip than the banshee, which is a 1 ½ old in my pc.  
Any ideas what could be causing this?
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ocitman
Asked:
ocitman
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1 Solution
 
oldgreyguyCommented:
Games run to the wall with system resources, I would check their web site for updated drivers, also, check the game website for requirements.  new DirectX or such

bill
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me4winCommented:
It is strange that the Banshee was performing faster than the Voodoo3. Like oldgreyguy said try the latest drivers for both the game and your video
card. Your Voodoo3 card should perform consistantly faster than the Banshee. Voodoo3 runs the core and memory clock faster and supports dual texturin instead of single like the banshee. Good luck!
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ocitmanAuthor Commented:
olderguy:

i have the latest agp, 3dfx drivers and dx7.0.  its baffeling me too.  the voodoo3 should kick the banshees butt by a long shot.  i checked for updates to motocross madness and there are none.

to me4win:

you mentioned faster performance.  i tested the banshee the same way that i tested the voodoo3 ( by playing the game with the fps util running )and the voodoo3 had a higher frame rate but it was not consistant like the banshee.  the frame rate was 10-15 fps faster than the banshee but it kept dropping off where the banshee didn't.
do you think if i gave the irq the voodoo3 uses some system memory would help?  i would add a line to the 386enh section of the system.ini file something like this
irq11=2048

thank you both for the very timely response.
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oldgreyguyCommented:
I would (and I never have been accused of being the sharpest stick in the pile) head for the BIOS and start fidgeting around with the settings for the graphic card. I have never gotten much out of the IRQ (exept when something else wasn't kosher) change.

bill
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ocitmanAuthor Commented:
i will check on the 3dfx website and seei f they have nay bios settings suggestions and get back to ya
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ocitmanAuthor Commented:
i checked with the 3dfx site used their bios settings.  this actually made the game worse.  the fps problem still exists and now the video display is not as smooth and broken up, not displaying the correct colors etc.  i think i will just reinstall the banshee and leave it at that, if i can.  i have also emailed 3dfx and let them know of the problem.
thanks.
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ocitmanAuthor Commented:
also. i will award the points to olderguy because he was the first to answer.
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