VOGONS


GeForce 6800 on a Ga-5AX

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Reply 20 of 24, by candle_86

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agreed, beyond say a Geforce 2 MX, TNT2, Geforce 256, Radeon 7200 its really pointless to go beyond.

Reply 21 of 24, by Mamba

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Thank you J'aws for your suggestions.
I have a Abit BX133-raid laying around and a tualatin+adapter. Maybe I can use it with the modded 6800 (is a V9999GE).
As for the super7 system, I still love it, when I'm done trying to make work the 6800 I'll try to find a FX card, but they say that FX are terribile without SSE.

Reply 22 of 24, by idspispopd

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havli wrote:
Mamba wrote:

I fail to see from your argument why a mere Geforce-2MX is overkill for a K6-III+.

It is overkill - let me put it this way:
K6-III+ 577 can feed the video card just fast enough to produce ~42 fps. So no matter the VGA used, This PC only can render 42 fps, not faster. Therefore it is pointless to install faster VGA because CPU is the bottleneck here. When using very high resolution and AA/AF then better VGA may prove useful... but I can guarantee you wont see a performance benefit when upgrading FX 5900 -> 6800. Btw - GeForce FX anisotropic filtering quality is much better than GF6/7, so you will gain no performance and actually decrease image quality (when using AF).

The K6-3 will run the game a bit faster if you use a GPU with hardware TnL which offloads a part of the work. See eg. http://www.tomshardware.com/reviews/benchmark … hon,590-23.html
(K6-3 450 with Radeon 9700 Pro scores ~48fps. Not sure if all parameters are the same, though). Still I agree with you, anything faster than a GF2MX probably won't help (except maybe at higher resolutions than 1024x768).

Regarding the original problem: This is just a wild speculation, but is it possible that the video driver needs some PPro instructions which the K6-3 doesn't have? Just like several PCI video cards don't run on a 486, or only with specific driver versions? I don't know if that would cause this error message, though.
To check this you could try a Cyrix 6x86MX/MII which does have the PPro instructions. (Of course this would cause much worse performance.)
Does a different Geforce card work in that machine with the same driver? Of couse the driver could use a different code path for different cards, but for simple initialization/2D desktop operation I doubt that.

Reply 23 of 24, by Mamba

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Just for those who think that nv40 is not designed for AGP 1.0 (3.3v) also :

http://global.aopen.com/products_detail.aspx?auno=950

Aopen states clearly that it is.

Now, the fact that I can' t make it work properly on Ali Aladdin V chipset, it' s another story.
Maybe I'll get a mvp3 mobo.

Reply 24 of 24, by alexanrs

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AOpen seems to be uncertain of whatever the card is. It doesn't have the notch and the specs page claims it operates at either 4x and 8x (but doesn't mention 1x and 2x, which are the only speeds that can be used at 3.3V).

It could be that the chip itself is fine with 3.3V, though, and the issue might be as idspispopd suggested: the drivers needing instructions not provided by the processor... Or ALi's flacky AGP implementation.