What is the highest sst_grxclk you can use?
Brad Mettee
Hi,
I'm just wondering what people out there have found to be the max usable clock
speed for a 3dFX based (Voodoo) card. I'm running mine at 65 for Q1 & 64 for Q2
with no visible tearing, and no other odd remnants. As soon as I go to 66/65 I
start getting triangle screw ups (looks like they are either not drawn, or drawn
wrong color).
If enough people are interested, I'll be glad to do a doc on how to put a
heatsink/cooling fan on your card with NO permanent modifications (no glue, or
drilling required). I know it works for a Monster 3D, but don't know if it's feasable
for other types of cards (depends on position of the Voodoo chip).
e-mail me at bme...@pchotshots.com with your setup & max speed. I'll try to
post results in a week or so.
If anyone knows of a web page that has this info, post it/e-mail it, and ignore this
post entirely.
Brad Mettee
Brett Jacobs
I'd say your at the extreme edge of danger right now with your 65/64
setting.(:(: I think the bus speed won't allow any higher than 66mhz on the
voodoo and it will lock up instantly. But I'm not sure on this. I've never
been brave enough to try it.(:(: Good luck and your Monster should be
exploding about the same time the Voodoo2 comes out, if not before.(:(:
Brett
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Brad Mettee wrote in message <69fsgv$7...@clarknet.clark.net>...
Brad Mettee
In article <69g3sm$9dm$1...@www.3dfx.com>, tw...@infoave.netNOSPAM
says...
>
>I'd say your at the extreme edge of danger right now with your 65/64
>setting.(:(: I think the bus speed won't allow any higher than 66mhz on the
>voodoo and it will lock up instantly. But I'm not sure on this. I've never
>been brave enough to try it.(:(: Good luck and your Monster should be
>exploding about the same time the Voodoo2 comes out, if not before.(:(:
Brett,
Thanks for the input. I've tried long demos (including bigass1) and even after
repeated runs (say 10 in a row) I'm not experiencing any problem that I can see.
I'm using silicon grease as a heat conductor between the Voodoo chip & the heat
sink, so I think I should be pretty safe.
However, if the chip does go poof, I can always use that to justify a Voodoo2!
I won't be using those settings come summer though, we don't have air
conditioning and Baltimore summers can be brutal.
Brad
Jon
On Tue, 13 Jan 1998 11:15:12 -0500, "Brett Jacobs"
<tw...@infoave.netNOSPAM> wrote:
>I'd say your at the extreme edge of danger right now with your 65/64
>setting.(:(: I think the bus speed won't allow any higher than 66mhz on the
>voodoo and it will lock up instantly. But I'm not sure on this. I've never
>been brave enough to try it.(:(: Good luck and your Monster should be
>exploding about the same time the Voodoo2 comes out, if not before.(:(:
What do you mean by bus speed? The only limit to your overclocking
the voodoo chips is the chips themselves and the memory speed.
Alai
Mine goes up to 63. At 64 I start to see some weird stuff on the screen.
It seems fine though, but I keep it at 57 to be safe...(yes I am a wuss)
Brad Mettee wrote in message <69gnh4$6...@clarknet.clark.net>...
>In article <69g3sm$9dm$1...@www.3dfx.com>, tw...@infoave.netNOSPAM
>says...
>>
>>I'd say your at the extreme edge of danger right now with your 65/64
>>setting.(:(: I think the bus speed won't allow any higher than 66mhz on
the
>>voodoo and it will lock up instantly. But I'm not sure on this. I've never
>>been brave enough to try it.(:(: Good luck and your Monster should be
>>exploding about the same time the Voodoo2 comes out, if not before.(:(:
>
Nuitari
What revision Monster 3D do you have? You probably have Rev.A with the 45ns
EDO. The Monster that I had I could take up to 61MHz (room-temp/no-fan)
without any distortion. Going up to 62 would start to look messy on it.
I am able to take my Pure 3D up to 66MHz in the Quakes without distortion
(again room-temp/no-fan). At 67MHz I could barely see a few things
distorting, otherwise it held fine.
So I am guessing that regardless of the memory speed rating, it appears that
the one of the 3Dfx chips themselves are preventing us from going any
higher. My Pure3D came with 35ns EDO on board and we are distorting at the
same speed.
smirk... I wonder if Kryotech is considering making a refrigeration unit for
Voodoo chips... perhaps a whole setup where you could have refrigeration
capsules for CPU, 4 TMUs, and 2 FPUs? :)
I'd shell out a few hundred bucks for something to cool down one CPU and
dual Voodoo2 cards down to -40 degrees C... lol
Nuitari
Napalm Death
There is nothing to do with bus speed when you overclock your voodoo.
and the bus speed of PCI is 33Mhz or 30Mhz.
-== Napalm Death ==-
Penelope Baker
The bus speed of PCI in spec 2.1 is 66MHz. 33MHz is standard, but not
2.1 compliant.
penny
--
-------------------------
If broomsticks were cars, this one would be a split-window Morris Minor.
-- (Terry Pratchett, Equal Rites)
Jyrki Tuomi
In article <34BD73A2...@foxberry.net>,
Penelope Baker <pe...@foxberry.net> wrote:
>The bus speed of PCI in spec 2.1 is 66MHz. 33MHz is standard, but not
>2.1 compliant.
Ahem, no. 33MHz PCI 2.1 is obviously fully compliant with PCI 2.1 33MHz
specification. PCI 2.1 standard also defines a 66MHz PCI bus, which is
something else than the 33MHz PCI 2.1. Note that PCI 2.1 also defines
64-bit PCI bus width, in addition to the common 32-bit PCI bus.
In Intel Architecture based PC world, there is (AFAIK) only one chipset
which supports 66MHz (and 64-bit) PCI 2.1, the Micron Samurai chipset
(http://www.micronpc.com/about/pressreleases/pr081897%5Fsamurai.html).
Jyrki
P.S. Actually the PCI 2.1 standard defines the 33MHz PCI bus as 0-33MHz
PCI bus (i.e. the bus speed can be anything between zero and 33MHz).
Chipset and system manufacturers typically use PCI bus speeds of
33MHz and 30MHz (sometimes 25MHz). Today, some motherboards provide
the facility to overclock their 33MHz PCI bus to 37.5MHz or 41.5MHz.
Similarly, the 66MHz PCI bus is a 33MHz-66MHz bus. Each PCI
device which supports 66MHz speed, needs to have the 66MHZ_CAPABLE
flag set to "true" in their configuration space.
--
Jyrki Tuomi | "The only bright side to this [global envi-
j...@cs.uta.fi | ronment pollution] is that eventually there
University of Tampere | may not be a piece of the planet worth
Department of Computer Science | fighting over" -- Calvin
David Ripton
In article <01bd276b$063bacc0$7dad1dce@default>, x <x...@x.com> wrote:
>Unless of course you overclock your system bus to 83mhz... then your PCI
>bus speed, INCLUDING THE 3DFX btw... :) ... is roughly 41.5mhz... (system
>bus speed divided by 2 = PCI bus speed) So then if you can eek that 3Dfx
>to 57,58 or 59 mhz clock, you have some seriously screaming action.
>
>This btw is exactly what I have done to my K6-200 system and it has been
>running this way for months. Winstone benches the entire system out as a
>P-255, and the 3D performance NEVER skips a beat in Quake2 except for 2
>wide open areas I've found that drop the frame rate to about 20 fps if
>viewed all at once. I think in these areas the texture count is just too
>high for my Monster 3D. Otherwise 28-36 fps all the time, no other
>exceptions.
>
>Anyone else had luck with this approach?
My R3D (Etrontech memory) has been running mostly at 57 MHz since
November '96. (I got triangles and eventual lockups at 60, so I
backed off. No 3dfx fans.) My system bus has been at 83 MHz since
I picked up an Abit IT5H 1.5 last summer.
I don't think a 3dfx card on an 83 MHz bus runs any hotter than the
same card on a 66 MHz bus. Or any faster, in most cases, though
pushing the bus speed certainly helps with main memory transfers,
assuming you don't have to add compensating wait states to keep
things stable.
--
David Ripton dri...@netcom.com
spamgard(tm): To email me, put "geek" in your Subject line.
longfist
I think any advice on how to safely mount fans and heatsinks would be
greatly appreciated. I know of one website that SELLS 3Dfx fans
(http://www.3dfxcool.com), but doesn't give any information on how to
fabricate your OWN fan.
Mark
On 13 Jan 1998 14:08:31 GMT, bme...@pchotshots.com (Brad Mettee)
wrote:
Brad Mettee
In article <34caba5d....@news.cent.com>, pro...@cent.com says...
>
>I think any advice on how to safely mount fans and heatsinks would be
>greatly appreciated. I know of one website that SELLS 3Dfx fans
>(http://www.3dfxcool.com), but doesn't give any information on how to
>fabricate your OWN fan.
This info will be arriving on a web page with pictures of the process within a few
days. Going to be re-doing mine tonight and documenting it.
Brett already has first notify for it, I'll post it here too afterwards.
Keep on Quakin!
--
Brad Mettee
PC HotShots, Inc.
Baltimore, MD
--> Let use bring out the *Power* of your PCs <--
* finger bme...@clark.net for PGP Key *
jtwolf
Is there a danger of burning out the hardware? or is the only danger software
only trouble fixed by a simple reboot?
Brett Jacobs wrote:
> I'd say your at the extreme edge of danger right now with your 65/64
> setting.(:(: I think the bus speed won't allow any higher than 66mhz on the
> voodoo and it will lock up instantly. But I'm not sure on this. I've never
> been brave enough to try it.(:(: Good luck and your Monster should be
> exploding about the same time the Voodoo2 comes out, if not before.(:(:
>