Electrically there is little difference between the regular SLI bridge and the SLI HB bridge. It is similar to two regular bridges combined in one PCB.

In order to SLI NVIDIA graphics card, they do not need to be of the same brand. As long as they have the same chipset, they are good for SLI. For instance, an EVGA GTX 1660 CAN SLI with ASUS GTX 1660 since they have the same GPU chipset “1660”.

0:143:52SLI MIX AND MATCH – YouTubeYouTubeStart of suggested clipEnd of suggested clipOr come from the same generation. Because of this sli. Can’t be turned on between both of theseMoreOr come from the same generation. Because of this sli. Can’t be turned on between both of these graphics cards. However. You . . . Read more

Does the RTX 3070 support SLI? – Quora. Sadly, NO. DX12 Games supported list: Tomb Raider, Civilization VI, Sniper Elite 4, Gears of War 4, Ashes of the Singularity: Escalation, Strange Brigade, Rise of the Tomb Raider, Zombie Army 4: Dead War, Hitman, Deus Ex: Mankind Divided, Battlefield 1, and . . . Read more

Most definitely you would have to replace your PSU as Xfinity is a Tier 4 brand which will cause fireworks in your computer when you try to SLI with it. And SLI definitely would increase your FPS by about 80% – 100%.

NVIDIA has basically dropped SLI support with the RTX 3000 series graphics cards. Not only does NVIDIA drop support, but most of the graphics cards themselves do not come equipped with the ability to use an SLI or NVLink bridge. … However, one card in the lineup includes a NVLink . . . Read more

Sadly, no, you can not SLI 2 graphics cards (such as a GTX 1080 and a GTX 1070). They need to have the same GPU and the same series name (GTX 1080+ GTX 1080).

As long as you have two slots to take the cards, you can install two video cards. If you want to do SLI/Crossfire, then they’ll need to be a matching pair (at least the same model, not necessarily the same manufacturer) and have the connectors to do this.

Requirements of the SLI technology Both video cards require the same GPU for SLI to work. It is possible to mix cards from different manufacturers as long as the same GPU is used in both cards, but it is always recommended to use identical video cards for SLI configurations.

"For GeForce RTX 3090 and future SLI-capable GPUs, SLI will only be supported when implemented natively within the game," Nvidia said. … The GTX 900-series was the final architecture by Nvidia to fully support SLI in its entirety, specifically 3-way and 4-way SLI configurations.