Do you think someone faked the label? Most likely not i guess. Perhaps its broken sadly?

Well... When running the card with the original Diamond drivers from the cd, it will report an Ultra in device manager.
It gives 5000+ in 3D-Mark99 (Pentium-III 500mhz) and there is no gfx issues what so ever when gaming.

The only difference is, that it is being reported as an pro, when using the official nvidia drivers and not the Diamond.
I have no doubt that this is an Ultra, I just do not know why it will report something else on the nVidia drivers.
I have an idea, that it is something about some mixed up device-id, in wich Diamond has screwed up on doing the job.

Must be the drivers i guess. But i have never heard of this, very strange.

My Elsa Gladiac 920 Geforce 3 is reported as a TNT2 card in some drivers... So, just let it be and enjoy the card.

The question now, is how often this actually happens on various cards?

As far as I know the TNT2 Ultra is an overclocked TNT2 PRO - as such it might be detected as a TNT2 Pro in device manager. Check the card's clocks with Aida64 or GPU-Z. If it's an ultra, it should be clocked faster then 143 core 166 ram.

kanecvr wrote:

As far as I know the TNT2 Ultra is an overclocked TNT2 PRO

That cannot really be said, because the chip of Pro is newer.

Make sure the clocks match! Also check the speed ratings of the memory, the Ultra should come with faster memory than a regular TNT2.

Ultra & Pro come with the same 5ns speed. Ultra chip has ultra written on it, I don't know about pro, but for a retro build there aren't big differences.

All TNT2's have the same core, the NV5. Only a matter what quality the chip has after manufacturing and the normal TNT2 and the Ultra were available from march 1999.

And of course, the used graphics memory can make the difference..

Some more strange update on the card...

First up, it is an Ultra as it gives that 3d-mark score, it states "ultra" on the screen when I turn on the computer (Boot-splash) and it is running on the correct clockfrequency. Now.... The card will not run with the default nVidia drivers, yet it runs perfectly with the ones from Diamond.
I am thinking that Diamond may have done some non-standard job when creating the v770 card.

Yeah, my 770U is also detected as TNT2 Pro - http://hwbot.org/submission/1074472_havli_3dm … ltra_2479_marks
Default clock is however same as Ultra should be - 150 MHz GPU / 183 MHz RAM and working just fine using regular drivers, just detected as TNT2/TNT2 Pro instead of Ultra.

Strange.... On default/regulair drivers (only tested 45.23 and Detornator-III 6.31), the card freezes in 3d-Mark99 and UT99.
So I have taken it out of the machine and installed an Matrox G400-Max instead.

As Diamond Multimedia does not have any v770 legacy drivers, I wonder were I can find an archieve on the internet.
I am thinking in terms of Diamond drivers 43.xx to 45.xx or something like that.

This has been said before, but I'll repeat it just in case - all TNT2 cards (sans the M64) use the same core. Some will have "PRO" or "Ultra" stamped on the chip, but not all (my MSI TNT2 pro does not but it's detected as PRO and runs at the correct frequencies). What lets the driver discriminate between cards is the device ID witch is written in the card's BIOS:

0x0028, 0x0000, "RIVA TNT2/TNT2 Pro", "RIVA TNT2/TNT2 Pro"
0x0029, 0x0000, "RIVA TNT2 Ultra", "RIVA TNT2 Ultra" }

This doesn't really impact performance, since the card is still physically a Ultra (if it's clocked faster then a PRO card and uses memory faster then 166mhz). It's entirely possible your card uses the 0x0028 tnt 2 PRO device ID - this should not impact performance. If you want the card to be displayed as an ultra in device manager, dump the video bios with gpu-z, grab NIBITOR (nvidia bios editor) and change the deviceID, then flash the modded bios with nvflash. The modification is cosmetic only - it does not bring any performance advantage unless you up the clocks. Most TNT2 cards can do 140-145 (PRO clocks) - some can even do 160 (I have a prolink tnt2 that does). GPU clock seems to be more influenced by how new the chip is and how much power it's getting. Back in the day I managed to push my sister's TNT2 M64 to 160mhz just by replacing some 40k resistor on the back of the card near the GPU with a 20k - that made it A LOT hotter but I installed a socket 7 heatsink with a 60mm fan on it and it worked for a while.

I own this TNT2 :

And it can do 150MHz/183MHz.

I see. The device id seems to be the root for the wrong detection. I can't see why else.

Now for the drivers issue. Is there any plausible explanation to why only the Diamond drivers work?

brostenen wrote on 2016-09-15, 23:41:

Hi all.
I have this Diamond Viper V770 Ultra. On the label it is marked as an Ultra and with the Diamond drivers it is detected as an Ultra. Sweet... Now here the trouble begins. I tried to install both a Detornator 3 driver and the nVidia driver version 45.23 and they both detects this card as an Pro.

Anyone here, that has an idea on what is going on with this?

You need the Diamond Viper V770 ultra drivers for this card. Generic Nvidia drivers wont work to show the card as Ultra..

Easiest way to show it as an ultra with the default drivers is to edit the .inf file.

Why all this crazy talk of editing and flashing the BIOS?

Pro chips use different manufacturing lithography. So while TNT2/TNT2 Ultra and TNT2 Pro are identical in capabilities, physically they are different.