TNT2 M64 Problem

OCSmurf · Apr 23, 2003, 09:11 PM

Hello Everybody:

Snce I'm new here, I'll welcome any suggestions about my problem. Thx in advance.

Let me get to the point. My current system:

P3 550MHZ 512KB Cache
Intel 440BX2 MOBO
256MB RAM (PC - 100)
ETC
eTC
etc
Windows XP Pro SP1

Well...I "upgraded" my video card from a S3 Savage 4 PRO (Diamond Speedstar A90) to a Chaintec TNT2 M64. The clocks are at 100/125...but you know an OC can't stay there...so I got them to 150/160. everything working fine since january. Proper cooling, etc. The problem is, that it is supposedly to show 32 MB of Video RAM...but it shows 16MB!!!. that happened when I upgraded the microsoft included drivers to 40.72. Even using the NFR from Guru 3d and reinstalling the latest rivers, windows doesn't show the numbers properly. I tried to install linux and 98 and it reported al the memory I supposedly have. I read there are limitations that are fixed in the 4x.xx series of DET drivers..but...

I know my PC is quite old. But...well...some day will be my day.
Thx

Matth · Apr 24, 2003, 10:08 AM

Is that AGP?
If so, what size is the BIOS AGP aperture set to - if that is 16, try 32.

Does it announce the right figure at bootup?

OCSmurf · Apr 25, 2003, 06:16 PM

Hey buddy...my comp isn't too old... Well...it is AGP 2x and running at AGP 2x. agpaperture is set to 256 MB, so I can't think is the AGP aperture.

OCSmurf · Apr 25, 2003, 06:18 PM

Oh, btw, it actually says at boot up that the card has 32 MB of SDRAM. I've changed with another one yeesterday...same model, same manufacturer and had the same prob.

BWX · Apr 25, 2003, 06:26 PM

here ya go

http://service.futuremark.com/compare?2k1=6381117

My vanta (tnt2 m64) 16mb until my 9700pro comes in.... 16bit color-- won't do it in 32bit color-

OC's 105/125 to 160/160! A Vanta! LOL- this thing is a piece of junk. I can't stand it one more day!

Matth · Apr 26, 2003, 08:57 AM

A 256Mb aperture with only 256Mb of RAM might be causing some odd effect.

I'd suggest lowering to 128, maybe 64 - I have a Geforce 2MX (later than TNT2) and that seesm not to use any more than 128, even if I set 256 (I have 384Mb total)

I recall some oddity with the TNT2 M64, but only mentioned in a rather unreliable tweak guide....
- Disable AGP support registry entry - now that's GOT to be a last resort!

Is the DirectX version matched to the drivers - not sure it's critical, but I've always used them matched (DX9 for x.14 drivers) - and I did notice some wierdness once when the driver was higher than the DX version (for an S3 Savage 4 - Dx7 driver / 4.12.xxxx and Dx6 lost some of the acceleration settings in DXdiag)

~~Hundredswords~~ · Apr 30, 2003, 04:25 PM

I also suggest setting the AGP aperture to 64; you should look for any video bios upgrade from Chaintech.

OCSmurf · Apr 30, 2003, 07:42 PM

Matth: Drivers are omegadrive's last release. I tried downgrading the drivers to 30.x series but the same problem. also, the aperture just can be set to 64 or 256 (pretty limited due to my board). Hundreds: I'll look for a video bios...until then...I give you my thx....