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T480 comes with both GPUs

2019-06-08, 7:25 AM

I ordered a T480 with the Geforce MX150 option. Was surprised to see my delivered unit with Intel UHD 620 and simultaneously active with the Geforce GPU. The Intel GPU however is the default display adapter.

 

I've never quite seen this before. Desktop mainboard BIOS would typically disable the onboard GPU if slotted with an actual video card (leaving the OS blind to its presence), and all my previous laptops that I configured with a discrete GPU would have just that alone.

 

Am I supposed to disable the UHD 620 in Device Manager in order to force the Geforce to take over? I don't see anything in the BIOS that can influence this (in fact it seems to suggest the UHD is in charge with its shared memory setting).

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Re: T480 comes with both GPUs

2019-06-09, 13:56 PM
I read that it was necessary to launch NVIDIA control panel and manually select programs to be assigned to the GeForce MX150 GPU (GPU 1). After I did that I still saw the processes (like Edge and Chrome) still use GPU 0 (Intel UHD 620).

However, after several rounds of reboot to figure out another annoying problem with Windows not remembering drive letter assignments, I saw that Edge and Chrome finally could use GPU 1.

Unfortunately, the software that I most wanted to use the GeForce GPU - Movavi Video Editor - while seemingly using GPU 1, still cannot recognise its presence and only offers the hardware acceleration option for Intel GPU.

https://www.reddit.com/r/thinkpad/comments/byibzr/t480_with_both_gpus/

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601 Posts

08-01-2018

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Re: T480 comes with both GPUs

2019-06-12, 0:05 AM

Hi icelava!

 

We've checked from the support site of  the Movavi Video Editor and they are requiring for you to have NVIDIA® CUDA™ to accelarate or use the Nvidia graphics card with the app. 

 

"Using of NVIDIA® CUDA™ provides video decoding/encoding acceleration on a CUDA-enabled graphics card GPU (Graphics Processing Unit) up to 5x. As Movavi Video Editor shifts video processing from your computer's CPU to NVIDIA's GPU, your computer’s CPU will be fully available for use by other tasks" 

 

There is an option for you to use Nvidia GPU acceleration.

 

Regards,

 



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Re: T480 comes with both GPUs

2019-06-12, 1:25 AM

The Intel graphics are not in a GPU; they are part of the CPU and all similar machines have the same integrated graphics, whether or not they have a discrete GPU.  The integrated graphics are fine for everything except graphics-intensive products.    


Rich


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60 Posts

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Re: T480 comes with both GPUs

2019-06-12, 7:31 AM

 

There is an option for you to use Nvidia GPU acceleration.

 


There is an option there, but it's disabled. I can only enable Intel graphics acceleration. I suspect it's largely a factor of whether Movavi checks for the presence of multiple GPUs; in which case it only appears to grab the first available GPU 0 and not bother querying further. I am currently asking their techsupport for the actual logic sequence they implement.

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60 Posts

04-20-2016

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Re: T480 comes with both GPUs

2019-06-12, 7:33 AM

 wrote:

The Intel graphics are not in a GPU; they are part of the CPU     


Yes, it may not be as powerful and feature rich, but logically WIndows and apps just treat it as another GPU. They are listed as GPU 0 and GPU 1; they don't try to perform extra labelling tasks to demote GPU 0 as being "lesser".

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