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Wednesday | January 20, 2021
Finally a NVLink bridge is available, but why?

Finally a NVLink bridge is available, but why?

No NVlink bridge available: a problem for rich people

If you have two RTX 3090s and you feel like it, it’s hard to want to connect them both. You can already hear the little voice saying that it’s a rich man’s problem and that it’s useless. So obviously, games that support multiGPU can be counted on the (two?) fingers of one hand. Indeed, the activation of the support now depends on the game studios, as much as to say that they don’t really care about this kind of esoteric configurations. However, this option has been made possible by NVIDIA on its RTX 3090 alone and Gamers Nexus had been able to show that the gain was real, at least on benches? Indeed, the generalisation of DX12 could have made it possible to use several graphic controllers, including heterogeneous ones (an AMD + a Nvidia). However, the vast majority of DX12 games do not apply this technique and this is undoubtedly a great pity.

Linking 2 RTX 3090s: what is the point today?

If we add to this the “evolutions” of NVIDIA on the subject, it becomes complicated. Because NVIDIA has replaced SLI with a new bridge since the RTX 2000 series. This is because NVLink, a much faster interconnection from the world of data centres, is now being used. The same technology is used for the RTX 3000 series, but because of the modified connectors, you need a new bridge, as the RTX 2000 series is not compatible. The real concern is that the bridge in question cannot be found. Only Nvidia was selling one for 89 euros on her website but guess what, it’s broken. Today the salvation comes from Gigabyte who is releasing its Aorus RTX Nvlink for 79.90 euros. Again, good luck getting it for you. If you have a string of RTX 3090s and other ambitions than to play in 8K 120Hz, it is however possible to exploit the computing power of these cards with software such as DaVinci Resolve, RedShift or OctaneBench. No bridge will be necessary and if you want to get an idea, Puget Systems has been able to combine up to 4 RTX 3090. nvidia rtx 3900 However, it is recommended that you have a noise-cancelling helmet to operate such a system.

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Edited by Calliers

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