Sugestions for VooDoo based projects

[del42sa]

http://pub43.ezboard.com/fx3dfxfrm1.showMessage?topicID=16717.topic

is it true that he owns SLI


Dan

[NitroX infinity]

Originally posted by Rolo01

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The system was : Athlon 2400+, 8K5A3+, Voodoo5 6000, Audigy2, 1GB DDR
I am not sure, but I guess the benchmark was Quake3 timedemo 1.
The headline means : effectiveness when overclocking

The fact that an increase in speed does not increase performance may suggest there could be another limiting factor. Personally, I think it could very wel be the AGP2x that is holding back performance. It could also be that your CPU is too slow (sounds strange, I know), or it could be that the program which was used could not produce more performance (also sounds strange, doesn't it? ).

Also, you need to restart your computer before the overclock takes effect. It could be that the person who ran these benchmarks did not restart his computer after adjusting the speed (This seems to be the most logical explanation)

[Blazkowicz]

what a WEIRD topic



instead of soldering hundreds of pins to get a "voodoo5 5800" with 128MB RAM.. could we manage to turn a V5 5500 64MB into a Voodoo4 with 64MB?  (with a switch to get back to the V5 mode )

let one single VSA 100 access the full 64MB..

ok, that would be actually harder that soldering new RAM.. (rewiring all ram chips) ?!?  . that may not be even possible?

[Blazkowicz]

How the 2xV5 5500 setup would be done?

by sacrificing a V5 6000 to get the Intel chip?
through the VESA Feature Connector? (BTW this connector is on my S3 virge too , and probably on older cards)
Or a Quantum Mercury-like solution (to get some more FSAA)

[NitroX infinity]

Hmm, I just got a strange idea; how about using the VESA connector to expand the RAM?

[Blazkowicz]

good luck if you want to do that

http://www.pcguide.com/ref/video/ifFeature-c.html

Video Feature Connector (VFC): This original feature connector was part of the original VGA specification. Standard VFCs are 8-bit ports using a 26-pin connector, and are limited to the lower resolutions and color depths of standard VGA. This is now an obsolete standard and is not used by higher-end cards.

[NitroX infinity]

I know that, but does it have one-way or two-way communication possibilities? In case of the latter, it could be possible.

[Blazkowicz]

but maybe it will be slower than swapping in PCI66 mode (that's what the amigamerlin does when lack of memory. hmm, ut2004 at 2fps )

[beta]

Overclocking Voodoo5's with "Grxclock", like that is a waste of time: http://www.3dfxzone.it/enboard/topic.asp?TOPIC_ID=967

Try running your benchmarks with FSAA 2x enabled or use single chip mode (SLI disabled).  I guarantee you will see a small but noticable performance differential.  Under SLI you will see virtually no difference whatsoever because only one VSA-100 is overclocked.

2x/4x AGP is pointless as DIME is not supported.  1.5V slot compatibility is what was discussed intitially in this topic, not 4x clock transfer mode which won't function with SLI unless an AGP bridge is onboard anyway.

[hanksemenec]

Just a little project

V5 6000 with Toshiba -54 memory and improved heat sinkage
Heatsinks are same as aalchemy and the memory heatsink is from ?
Well it is a VooDoo2 heatsink.

current speed passed 193MHz just trying tests at 195MHz.



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[NitroX infinity]

Hank, try some Zalman NB32-J northbridge-heatsinks, they're even better (Not NB47-J, you can't fit fans on those)

[hanksemenec]

The bridge is at about 40 deg C, it sgould be fine. Thanks for the suggestion.

I just wanted to see if I can still solder. I did not have anymore V5 6000s with -54 memory, so I replaced the standard -6 with Toshiba
-54. Well, I had to redo my work a couple of times

I'll see if I can get some -5 SDRAMs next.

After adjusting all the chips mem clock speed with softice, the performance increase is linear.

Hank

[osckhar]

Hi Hank,

so I replaced the standard -6 with Toshiba
-54. Well, I had to redo my work a couple of times

[/b]
Well, Is that possible on the V5 55k too?

Regards,
Oscar

[Ragnarok72]

I just had a crazy idea.

I don't know if this would be more of a driver-design or hardware-design issue, or if this was already suggested, but while a V5 is running in Single Chip mode, would it be possible to use the TMU pipelines from the other chips during multitexture operations?

I.e., a V5 5500 in Single Chip mode uses the 2nd chip's TMU to gain an effective 4-texture-per-pass operation?  Now I'm no hardware technician like Hank is, but I would assume that since the card is a multiple-chip design, that there would be at least some underlying circuitry already on the PCB that would allow for some sort of communication between the chips, which could perhaps be utilized for this task without the need for hardware modification.  But since I don't know if there is, that would be where you guys come in.

Of course, on the driver end we'd probably have to re-code it to treat the card as a 1 VSA-100 with an additional off-die TMU unit, when it comes to Single-Chip Mode....I might be mistaken, but didn't the original Voodoo1 have that type of architecture, with an off-die TMU?

[dborca]

Originally posted by Ragnarok72

I.e., a V5 5500 in Single Chip mode uses the 2nd chip's TMU to gain an effective 4-texture-per-pass operation?

Can't be done. Not without a HW mod, anyway!