Interesting! What games did you test it on and what hardware are you using it with?

Doornkaat wrote on 2021-04-20, 04:15:

Interesting! What games did you test it on and what hardware are you using it with?

I tested it with GLQuake, Quake II, and Quake 3 so far. I also tested with 3DMark99 and 3DMark2000, again with no issues. I currently have it running on an ASUS P5A-B rev 1.05 motherboard with a K62@550MHz with 256MB of SDRAM on Windows 98 SE.

The reason that the 2nd TMU is disabled in the driver, is that they didn't want to stress out the 8MB this graphics card had.
Especially on higher resolutions (above 1024x768).
Enabling it in the registry editor should give no hw problems. It is after all a voodoo 3 2000 with only 8mb mem.
With proper memory cooling, it should go to 166mhz and be an equal to the voodoo 3 3000.
When it launched in 1999, it was a budget card, costing only $50.

Aebtdom wrote on 2021-04-20, 17:50:

The reason that the 2nd TMU is disabled in the driver, is that they didn't want to stress out the 8MB this graphics card had. Es […]
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The reason that the 2nd TMU is disabled in the driver, is that they didn't want to stress out the 8MB this graphics card had.
Especially on higher resolutions (above 1024x768).
Enabling it in the registry editor should give no hw problems. It is after all a voodoo 3 2000 with only 8mb mem.
With proper memory cooling, it should go to 166mhz and be an equal to the voodoo 3 3000.
When it launched in 1999, it was a budget card, costing only $50.

I have installed active cooling, overclocked to 166MHz and applied the 2nd TMU registry hack with no issues:)

Here you go. As expected 😀

Why 2nd TMU was disabled in OpenGL/Glide but not in Direct3D?

TMU was disabled purely for marketing reasons. Although it could be speculated that some chips were low quality and couldn't pass internal testing without active cooling.

Is it possibile to disable TMU in regular 16MB Voodoo3 using velocity drivers or registry hack?

BigDaddyM wrote on 2021-04-21, 05:52:

Is it possibile to disable TMU in regular 16MB Voodoo3 using velocity drivers or registry hack?

Why would you want to do that?
If possible, it would take a huge hit in performance.

I've never looked at it myself, but you could go to:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Display\0000\Glide
And add the value: FX_GLIDE_NUM_TMU
And set it equal to 1.

I have no idea or whatsoever if it works.

Aebtdom wrote on 2021-04-21, 06:07:

Why would you want to do that? If possible, it would take a huge hit in performance. […]
Show full quote

Why would you want to do that?
If possible, it would take a huge hit in performance.

I've never looked at it myself, but you could go to:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Display\0000\Glide
And add the value: FX_GLIDE_NUM_TMU
And set it equal to 1.

To get a Voodoo 3 with a faulty second TMU to work on par with a Voodoo 2 at least.

Aebtdom wrote on 2021-04-21, 06:07:

Why would you want to do that?
If possible, it would take a huge hit in performance.

For science and for fun 😀

jasa1063 wrote on 2021-04-20, 16:42:

Doornkaat wrote on 2021-04-20, 04:15:

Interesting! What games did you test it on and what hardware are you using it with?

I tested it with GLQuake, Quake II, and Quake 3 so far. I also tested with 3DMark99 and 3DMark2000, again with no issues. I currently have it running on an ASUS P5A-B rev 1.05 motherboard with a K62@550MHz with 256MB of SDRAM on Windows 98 SE.

Thanks! 👌 I would have really expected a greater impact with the benchmarks at least. Maybe the Velocity is a real price/performance champion on Super 7! 😃
I forgot to ask before: What resolutions did you test with? Did you notice any difference with higher resolutions?

Doornkaat wrote on 2021-04-21, 08:31:

jasa1063 wrote on 2021-04-20, 16:42:

Doornkaat wrote on 2021-04-20, 04:15:

Interesting! What games did you test it on and what hardware are you using it with?

I tested it with GLQuake, Quake II, and Quake 3 so far. I also tested with 3DMark99 and 3DMark2000, again with no issues. I currently have it running on an ASUS P5A-B rev 1.05 motherboard with a K62@550MHz with 256MB of SDRAM on Windows 98 SE.

Thanks! 👌 I would have really expected a greater impact with the benchmarks at least. Maybe the Velocity is a real price/performance champion on Super 7! 😃
I forgot to ask before: What resolutions did you test with? Did you notice any difference with higher resolutions?

I kept everything at 1024x768x16 or 800x600x16. Higher than 1024x768x16 did show a slowdown greater than expected.

As to be expected and mentioned earlier in this thread. But nice nonetheless.

jasa1063 wrote on 2021-04-24, 03:49:

I kept everything at 1024x768x16 or 800x600x16. Higher than 1024x768x16 did show a slowdown greater than expected.

Thanks. It appears the Velocity is the new 3dfx price/performance champion on Super 7! 😁
Funnily they seem to be much less common in Germany than regular Voodoo3 cards.

Hi
Which drives do You use?
I have installed Amigamerlin 2.9 and get this fog in Glide mode

What an odd little GPU, from reading about it its essentially a scaled back Voodoo 3 2000 catering to the business market. Perhaps 3DFX at the time felt that diversifying their market would help with their cash woes. Its great that you can mod it via software, I still remember being able to do similar things with AMD CPUs and turning on extra cores and certain 9000 series GPUs to upgrade them in a fashion to a higher model.

Tinkering is pretty much why I got into old hardware and software newer stuff just doesnt have such freedom.

Edit - wrong model number