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UEFI Only GPUs in Legacy BIOS System - Irrelevant for GPU Passthrough?

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Hi,

 

In short, I have an Asus P6T Deluxe, and a X5560, which did have a HD 4650 GPU for pass through for my daughter to play Sims 4 on her laptop using In Home Streaming.  It works fine, aside from the latest Ati Driver for the card has problems with the Hardware encoding, so I have to assign 4 cores to the VM to allow software encoding to work well.

 

I bought a couple of RX 460 cards, as my wife wanted to have the same ability (play Sims 4 on her laptop using in home streaming), however, whilst it works, the Driver crashes frequently, and seems to be a very common problem with the cards, and most solutions seem to boil down to return the card and get a different GPU. 

Also, the card seems to require a monitor at least connected up to the card to at least work (with the 4650 I just overrode the monitor driver to a generic 1366x768 digital panel, and it worked fine), so not entirely happy with the cards.

 

So I've been looking at getting GTX 1050 cards instead.  And an issue I've come across during my research online is that some of the newer GTX Cards need UEFI support in the bios to be able to post.  Since the P6T is a legacy BIOS, I believe I will be affected.

 

However, does it matter? I have an old PCI ATI Card in the system, so I believe the BIOS will still find a GPU to "boot" with.

And once I get to the GPU Passthrough using OVMF, it should be able to POST the VBIOS?

 

Many Thanks

 

Ben

 

PS: Plan is eventually to upgrade the mobo/cpu/ram in the system, but waiting to see how Ryzen is, before taking that dive.

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