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[AnAnd] Lucid's Virtu Enables Simultaneous Integrated/Discrete GPU on Sandy Bridge Pl

post #1 of 9
Thread Starter 
Quote:
The name Virtu is short for GPU Virtualization and the setup is pretty simple at a high level.

Start with a platform that supports Sandy Bridge's processor graphics (H6x or Z68) and connect your display to the motherboard's video out. Add in a supported discrete GPU, supply power but don't connect your monitor to it.

Virtu behaves a lot like Hydra. It intercepts API calls and passes them along to a GPU of its choosing. Unlike Hydra however, the goal here isn't to spread the load across multiple GPUs. Instead, Virtu aims to match each task with the GPU best suited to it.

Video output is handled by SNB's GPU, data is simply copied from the dGPU's frame buffer to the iGPU's frame buffer for output. There should be some overhead in this process however Lucid claims it's minimal.

What we end up with is a system that should run all 3D games on your discrete GPU, and run all video decoding and encoding on SNB's GPU. Since this isn't switchable graphics but rather a form of GPU virtualization you can actually run iGPU and dGPU applications at the same time (e.g. you can watch a movie in one window on the iGPU and play a game in another on the dGPU).

[Source]

Looks good, but I'm still pretty pissed Intel made us choose between OCing and onboard GPU. There was no need for us not to have both.
    
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post #2 of 9
Z68 is going to give us both.
 
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post #3 of 9
Quote:
Originally Posted by Nick0matic;12654149 
Z68 is going to give us both.

Will either this Virtu technology or Z68 enable the onboard encoding features if you have a discrete GPU? That's the most disappointing thing I read in the early Sandy reviews; that the really, really impressive encoding boost from the onboard GPU only worked if you had a monitor connected to and were actually using that GPU! I truly don't understand that design decision, and it needs to be overcome/changed.
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post #4 of 9
At this point, Intel should just full acquire Lucid for their GPU API intercept technology....
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post #5 of 9
Quote:
Originally Posted by VulcanDragon;12654192 
Will either this Virtu technology or Z68 enable the onboard encoding features if you have a discrete GPU? That's the most disappointing thing I read in the early Sandy reviews; that the really, really impressive encoding boost from the onboard GPU only worked if you had a monitor connected to and were actually using that GPU! I truly don't understand that design decision, and it needs to be overcome/changed.

I agree this was a bummer. But yes thats what this can do. You can use quick sync but still have a gpu in. My question is how good does the gpu perform in this situation. Is it hindered.
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post #6 of 9
Quote:
Originally Posted by DuckieHo;12654304 
At this point, Intel should just full acquire Lucid for their GPU API intercept technology....

Amen.
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post #7 of 9
Intel should acquire everything.
    
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post #8 of 9
i read this a week or so ago... its probably a repost?
(i read all my news through ocn)
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post #9 of 9
Quote:
Originally Posted by wh-ATI;12654411 
Intel should acquire everything.

No thanks!
    
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