IGP / dedicated

VulkanBros · May 14, 2016

What determines when a dedicated GPU is kicking in?
Is it the workload (software controlled) or is it hardware based?
And when the dedicated GPU kicks in - does the IGP totally stops working?
And is there differences AMD CPU v. IGP vs. Intel CPU v. IGP in terms how they work with a dedicated GPU?

R-T-B · May 14, 2016

Your dedicated GPU should be "kicking in" when you connect your display to it, unless I'm misunderstanding something. Your IGPU ports would be on your mobo.

VulkanBros · May 14, 2016

R-T-B said:
You're dedicated GPU should be "kicking in" when you connect your display to it, unless I'm misunderstanding something. Your IGPU ports would be on your mobo.

It's on a laptop, HP ZBook G2, Intel i7-4610M and nVidia Quadro K1100M. I have no external monitor connected. When running CAD applications (2D and 3D) I've noticed differences in performance, but can't determine if it is CPU or GPU related.

NdMk2o1o · May 14, 2016

Run gpuz and monitor the usage?

VulkanBros · May 14, 2016

NdMk2o1o said:
Run gpuz and monitor the usage?

Yeah, it's crossed my mind to do just that.
But the thread was also to get a better understanding of the IGPU / dedicated thing

little cat · May 14, 2016

The GPU features Optumus technology .
http://www.nvidia.com/object/quadro-for-mobile-workstations.html

So , ihe Quadro K1100M can be controlled from NVidia Control Panel . There can be selected which GPU to be used for all and for a certain application . When the 3D of K1100M is used , only the 2D features of the Intel iGPU should be used . DirectX 12 wont help here .

VulkanBros · May 14, 2016

little cat said:
The GPU features Optumus technology .
http://www.nvidia.com/object/quadro-for-mobile-workstations.html

So , ihe Quadro K1100M can be controlled from NVidia Control Panel . There can be selected which GPU to be used for all and for a certain application . When the 3D of K1100M is used , only the 2D features of the Intel iGPU should be used . DirectX 12 wont help here .

Don't believe DX12 is compatible with the K1100M... but thanks for the sharing

little cat · May 14, 2016

DirectX 12 is for the new cards only , it is unliky that one will be covered

hojnikb · May 14, 2016

little cat said:
DirectX 12 is for the new cards only , it is unliky that one will be covered

k1100m is a kepler based card, so it should support dx12 just fine.

little cat · May 14, 2016

hojnikb said:
k1100m is a kepler based card, so it should support dx12 just fine.

Only software not hardware . So , I wouldnt rely on K1100M and Intel HD Graphics working together . Anyway .

Huh , huh , my Geforce GT 520mx is listed as DirectX 12 supported , but no way to work together with Intel HD at the same time

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System Name	Commercial towing vehicle "Nostromo"
Processor	5800X3D
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Memory	32 GB Fury 3666 MHz
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Storage	SN850 NVMe 1TB + Renegade NVMe 2TB + 870 EVO 4TB
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System Name	Commercial towing vehicle "Nostromo"
Processor	5800X3D
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Memory	32 GB Fury 3666 MHz
Video Card(s)	4070 Ti Eagle
Storage	SN850 NVMe 1TB + Renegade NVMe 2TB + 870 EVO 4TB
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