question about bridged NVIDIA 1080 Video cards
 

Hi All,
Has anyone used a bridge for twin video cards? The cards are NVIDIA 1080 on a bridge. I'm running Debian Trixie if it matters.
I've never had a dual card set up before and want to know if it works and how much of a pain it is to get working.

Thanks

Until today I've been using a pair of GTX960 video cards connected via the SLI bridge.

I thought the SLI bridge made the two cards behave as a single card. Recently, I've come to the realization that software must be written to take advantage of SLI--it's not automatic. Otherwise, only the primary card is being used.

On occasion I've been running a system monitor program while I've been playing Baldur's Gate III. The game appears to use few, if any, resources on the second card. The primary card shows GPU usage at 100% maximum while the other card seems to do some light housekeeping instead of contributing to frame rate. I don't think the game is using any of the GDDR on the second card either because I've been seeing artifacts in the game. What should look like tree leaves shows up as weird blue squares. Even though those two cards add up to better than the minimum specs for the game, I had to change the video options to their lowest values to get rid of the artifacts.

Even so, I'm replacing the two GTX960 cards with a single RTX 4060 Ti. Frankly, I feel a bit ripped off because they didn't SAY that the second (or third!) card would be underutilized when I bought them.

Maybe what you are doing will take advantage of both of your video cards. If you picked them up at a reasonable price, who cares about the software utilization? A 1080 is a pretty smoking card all on its own. If you're mining crypto, surely that program would use both cards at maximum speed.

That's just my opinion. I could be wrong....