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2x gpu do they work together?

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2 X GUPS, do they work together?

I have a Sapphire Radeon RX 6800 XT NITRO+ OC 16GB as my main GPU and a spare Sapphire Nitro+ Radeon RX Vega 64 8GB, will these two GPU'S work together in a system giving me more FPS or am I wasting my time in that only one will run the game and the other will just be idle as the monitor is not plugged into it

Thx John
 
Linking two GPUs used to be a feature for both nVidia and AMD cards, however both GPUs had to be the same or similar models. Both have abandoned the concept now, with only nVidia's 3090/4090 offering the capability, and even then I believe that is only really supported for workstation tasks rather than games.

The short answer is therefore no, this will not work unfortunately.
 
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As above, Crossfire/SLi is pretty much dead. DirectX 12 does have its own multi GPU but requires the game developer to do all the work to support it instead of the drivers, and I don't think I've seen any game supporting this.

Only reason you want a second GPU is either due to needing to connect a lot of monitors, dedicated encoding/decoding GPU (if it supports better codecs for example), or crypto mining (which is no longer viable due to changes in the crypto market).
 
2 X GUPS, do they work together?

I have a Sapphire Radeon RX 6800 XT NITRO+ OC 16GB as my main GPU and a spare Sapphire Nitro+ Radeon RX Vega 64 8GB, will these two GPU'S work together in a system giving me more FPS or am I wasting my time in that only one will run the game and the other will just be idle as the monitor is not plugged into it

Thx John
I know only one game that would allow you to take advantage of 2 different GPUS: Ashes of the Singularity
 
As above, Crossfire/SLi is pretty much dead. DirectX 12 does have its own multi GPU but requires the game developer to do all the work to support it instead of the drivers, and I don't think I've seen any game supporting this.

Only reason you want a second GPU is either due to needing to connect a lot of monitors, dedicated encoding/decoding GPU (if it supports better codecs for example), or crypto mining (which is no longer viable due to changes in the crypto market).
A few games support it, but it's only about 10 or so, and it's not getting any larger
 
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A few games support it, but it's only about 10 or so, and it's not getting any larger
Ah right, completely forgot about Ashes, they always cropped up in early testing back then since they were usually the first to support these sort of things. I think Deux was another one if I remember correctly.

@Jumper118 that's with DX12 multi GPU isn't it? Meaning 3DMark actually put in support for the benchmark. Crossfire was mainly for DX11/OpenGL which is no longer supported.
 
I know only one game that would allow you to take advantage of 2 different GPUS: Ashes of the Singularity

Actually a lot more but we won't let facts get in the way...

I use 2 x 3090s in SLI/NVLINK BTW. Maybe use some google skills to see how many are really supported.


Also no I don't recommend it going forward as game devs are too lazy to support it these days. So buy one better gpu than two for gaming. For work related apps dual gpus still work and work very well.
 
Actually a lot more but we won't let facts get in the way...

I use 2 x 3090s in SLI/NVLINK BTW. Maybe use some google skills to see how many are really supported.


Also no I don't recommend it going forward as game devs are too lazy to support it these days. So buy one better gpu than two for gaming. For work related apps dual gpus still work and work very well.

I never said it's the only game that does, just it's the only one I know. And I'm not talking about SLI but DirectX 12 multi-GPU feature.
If you know about more games that supports it please name them, I'd be extremely interested.
 
I never said it's the only game that does, just it's the only one I know. And I'm not talking about SLI but DirectX 12 multi-GPU feature.
If you know about more games that supports it please name them, I'd be extremely interested.

There has been more and not added to the list since Nvidia stated the changes to SLI for 30 series, AMD still also has crossfire enabled and all Nvidia gpus before 30 series still have full SLI enabled for all games that have SLI profiles too.

DX12 and Vulkan support SLI and Crossfire if devs enable it in their games too as the API's have built in mGPU support.
 
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Ah right, completely forgot about Ashes, they always cropped up in early testing back then since they were usually the first to support these sort of things. I think Deux was another one if I remember correctly.

@Jumper118 that's with DX12 multi GPU isn't it? Meaning 3DMark actually put in support for the benchmark. Crossfire was mainly for DX11/OpenGL which is no longer supported.
Yes it only works in the dx12 benchmarks unfortunately. In the amd driver it's labelled as mgpu. It works in unigine super position too
 

There has been more and not added to the list since Nvidia stated the changes to SLI for 30 series, AMD still also has crossfire enabled and all Nvidia gpus before 30 series still have full SLI enabled for all games that have SLI profiles too.

DX12 and Vulkan support SLI and Crossfire if devs enable it in their games too as the API's have built in mGPU support.
Again, I'm not talking about SLI: https://www.overclock.net/threads/whatever-happened-to-dx12-multi-gpu.1748604/
 
I do recall having GTX 480 in SLI, went back to a single card when the FPs was higher but felt less smooth.
 
That is multi gpu supported games now not SLI if you read it.

@Zarax is talking about explicit multi GPU support and AotS is the only game I know using it.
You can use any 2 GPUs together although you will double the performance of the slowest GPU in the system.
I remember using it with GTX 980ti and RX 480 which was giving me slightly more performance than 980ti on it’s own.
 
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@Zarax is talking about explicit multi GPU support and AotS is the only game I know using it.
You can use any 2 GPUs together although you will double the performance of the slowest GPU in the system.
I remember using it with GTX 980ti and RX 480 which was giving me slightly more performance than 980ti on it’s own.
This is what I meant.
In the OP case, it would mean basically doubling the Vega64 FPS, which the 6800XT might be close to do on its own.
 
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