Geforce3, 3DMark 2001 and fill-rate question

[DragonFire]

System specs

ASus A7V133
Tbird 1.4@1.58
786 megs of PC150 ram running at 144MHz CAS2
GeForce3 running 22.80 drivers
Windows XP Pro


Iv been running 3DMark 2001 over and over and changing settings using NVmax and the higest score I can get is 7076 while other people that have almost the same setup are getting 7500+. What is the problem?

I have noticed that my Fill-rate tests are lower then other that I compare to. The most I can get is 715/1430 (single/muilt-textures) while other are getting 800/1600 and the only way I can get that score is to overclock my geforce3 to 215/520....


Any ideas what im not tweaking that others are or anything that I can try? Is that im just stuck with what I got?

 

[Smbu]

You increase your fill rate by overclocking the core on your GF3. With my GF3 Ti500 running at 260 core I get the following results.

Fill Rate (Single-Texturing)
(MTexels/s)

835.4

Fill Rate (Multi-Texturing)
(MTexels/s)

1728.3

I don't remember what score I got at the stock speed of 240mhz core.

 

[DragonFire]

ok but how about this......MadOnions website says a the geforce3 gets 75XX marks while the TI500 gets 85XX......

Are they getting 7500 from a GF3 running at stock or are they getting those numbers by taking a avg from all tests using a GF3?




And just how high would it be to go with the core and still keeping it safe. Even at 200Mhz the back of the GF3 chip gets rather hot. Iv had to place a small fan over the spot.

 

[Jeff7]

I get fillrate increases on my GF2 by increasing the memory and not the core; maybe that is different in the GF3.

 

[Smbu]

Well, when they list the video card, they don't list the clockspeed, so I'm sure most people are oc'ing their cards. I get over 9000 points with my current setup.

 

[Smbu]

<< I get fillrate increases on my GF2 by increasing the memory and not the core; maybe that is different in the GF3. >>


Now how is that? fillrate is (mainly) determined by core clock speed x # of pipelines for Pixel fillrate(and # of textures per pipeline for Texel fillrate).

On a regular GF3 clocked at 200 core. The total possible fillrate for that card at 200mhz is for:
pixels = 200mhz x 4 pipelines = 800 MegaPixels
texels = 200mhz x 4 pipelines x 2 textures per pipeline = 1600 MegaTexels(or 1.6GigaTexels)

If you increased the core speed to say 240mhz(the core clock speed of a GF3 Ti500)
pixels = 240mhz x 4 pipelines = 960 MegaPixels
texels = 240mhz x 4 piplelines x 2 textures per pipline = 1920 MegaTexels

Now if you take a look at the fillrate for a GF2 Ultra with a core clock speed of 250mhz and since the GF2's have the same 4 pipeline, 2 textures per pipeline architechture as the GF3 cards we can use the same formula to calculate the theoretical fillrate for the card.
pixels = 250mhz x 4 pipelines = 1000 MegaPixels (1 gigatexel)
texels = 250mhz x 4 piplelines x 2 textures per pipline = 2000 MegaTexels (2 megatexels)

Now of course these are only theoretical numbers.