Gx00 driver bug fixes...

[Gurm]

Hey - want to make your G200 or G400 less buggy?

If you have a P3 or K7, it'll cost you a fps or two. If you have a P2 or a Celeron or a K6, it's free!

Just make a quick registry entry, wherever the rest of the Matrox registry stuff is...

Add a binary value in there, name it "User3D.SIMD" (without the quotes) and set it to "00 00 00 00". There ya go.

Turns out the P3 optimizations introduce a bit of bugginess... hehe.

- Gurm

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Listen up, you primitive screwheads! See this? This is my BOOMSTICK! Etc. etc.

[Brian R.]

Gurm - is this a W2K thing or a general OS thing?

[Gurm]

It's OS independent.

- Gurm

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Listen up, you primitive screwheads! See this? This is my BOOMSTICK! Etc. etc.

[Gurm]

Correct. Add it. Make it look just like the others. (SIMD optimizations are on by default in the newer revisions of the drivers. Turning them off gains you a speed loss on P3 & K7 machines but also a stability boost and fixes bugs).

- Gurm

P.S. The reason I didn't say where it is... is because it differs from OS to OS.

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Listen up, you primitive screwheads! See this? This is my BOOMSTICK! Etc. etc.

[This message has been edited by Gurm (edited 06 August 2000).]

[Drizzt]

Gurm, can you be more precise over the key where to find the Matrox registry stuff?

[mirp]

I found the 'User3D.*' keys here: HKEY_LOCAL_MACHINE\Software\Matrox\PowerDesk\Curre nt Settings
But there is no 'User3D.SIMD' (K6-3 + G400).

[Haig]

Instead of that, what happens if you put "SDRAM Latency equals 2" in your system bios?

Haig

[Heed]

My machine locks up because my pc-100 is already running at 133. Is sdram latentcy somehow related to the drivers use of the newer 3d instruction sets?

Cheers,
Heed.

[Surfwienix]

what bugs are solved with this trick?

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>> Surfwienix <<

My System:

AMD K6-2/400 non-o/c
Epox MVP3C-M Super7 (VIA 4.24)
128MB SDRAM(PC100)
Matrox Millennium G400 MAX
(PD 6.14.051 Certified + TGL 1.3 + DX 7a) AGP2x/256MB @IRQ11(not sharing) non-o/c
Terratec DMX Sound-System
20,4GB Maxtor HDD (UDMA33)
ASUS 50x-CDROM (UDMA33)
Realtek 8019 Ethernet (ISA)
Creatix HAM V.90 Modem
19" Monitor CTX-VL950T (95khz)
Windows 98SE

[Haig]

Many people have been reporting this problem ever since we released our win2k and they all assure us of having nothing O/C'ed.

So for those people, I'm just curious to know if this will help the dual CPu crashes in win2k that's all.


Haig

[Duty]

I just set the latency and will note if it helps. This could prove to be intersting because of the mix of crap memory I am running right now. Not only do I not know who made most of it but it is a mix of speeds.

this should be fun

Jeff

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Remember when naps were a bad thing?

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You stop learning when you are die, and some people just don't know the're dead yet!
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ABIT BP6 - 2 x Celeron 500 - 256MB Ram - MX300 - 3Com 509c - 3com 905tx - Creative PC DVD 6x - G400 DH - DSL (True Love Here) - Win98 se - Win 2000 pro

[Gurm]

Haig,

So, instead of turning off buggy code (which I _know_ is buggy because a little birdy told me...) you want us to make our SDRAM run FASTER?

I've got my latency set to 3. Always have. Even when I have CAS2 RAM, just to be safe.

- Gurm

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Listen up, you primitive screwheads! See this? This is my BOOMSTICK! Etc. etc.

[DarkSyd]

Is there a particular bug this is supposed to fix?

[RAB]

Gurm,
I'm surprised you only use CAS 3. Going from 3 to 2 is like adding 50 mhz to your processor speed. The only potential problem is that in some cases you will not be able to overclock as high. Or you can look at it another way, you can get the same benefits as another 50 mhz by using CAS 2 rather than running your CPU at the very edge of destruction with CAS 3.

Any good PC100 SDRAM should be able to do CAS 2. My Micron will do 112 at CAS 2 and is very stable. I don't have any PC133, but it could be that it is only able to go to 3 and still be stable. After all, it is still basically PC100 overclocked as far as possible and using 3 would make it more stable at 133. But from other posts, some of the better brands have no problems at CAS 2 and 133.

RAB

[This message has been edited by RAB (edited 16 September 2000).]

[Kosh Naranek]

RAB
I totally disagree with the 50 Mhz mark that you are stating, at most it's 2-5 fps in a game like Q3 and that's not a 50 Mhz CPU boost.
And you can counter most of the performance loss by using WPCREdit And WPCRSet by H.Oda
( PCI Configuration Utils. - can change settings which you cannot change in your bios among other things the memory interleave )