Does desktop motherboard BIOS allow to switch between Intel GPU and dedicated GPU ?

[SPK123]

Does desktop motherboard BIOS allow to switch between Intel GPU and dedicated GPU, if the monitor has two output ports - one connected to the Intel GPU and the second to the dedicated GPU, ?

 

[rgd1101]

usually don't, but check the manaul

 

[SPK123]

A forum member just told one could switch through BIOS. If not then, how can one use Intel GPU in a system with dedicated GPU ?

 

[k1114]

With igpu multi monitor enabled, switching input on the monitor may just do it. Some monitors won't work like that having 2 connections to the same pc though. That would be a lot easier than going into bios every time. But why are you doing this?

 

[SkyNetRising]

Does desktop motherboard BIOS allow to switch between Intel GPU and dedicated GPU, if the monitor has two output ports - one connected to the Intel GPU and the second to the dedicated GPU, ?

BIOS can enable and disable integrated GPU.
But switching between inputs usually is done with button on the monitor
(or in configuration menu of the monitor).

 

[k1114]

I just read the other thread. It'll still get power as long as the gpu is plugged in so you can't do what you want.

 

[SPK123]

usually don't, but check the manaul

Does desktop motherboard BIOS allow to switch between Intel GPU and dedicated GPU, if the monitor has two output ports - one connected to the Intel GPU and the second to the dedicated GPU, ?

BIOS can enable and disable integrated GPU.
But switching between inputs usually is done with button on the monitor
(or in configuration menu of the monitor).

We are asking about a scenario where-in two connections are from same PC.

Whist dedicated GPU drivers take the command, Intel GPU cannot do processing ( or does Intel GPU drivers still remain active in the device manager , after Windows boots using dedicated GPU ? )

Our question is - likewise can one switch to the Intel GPU through the BIOS, making the dedicated GPU disabled. Such that when booting Intel drivers are in command.

 

[SPK123]

I just read the other thread. It'll still get power as long as the gpu is plugged in so you can't do what you want.

Thank you for the response

Do you imply switching is not possible if the dedicated GPU continues to get power through the power supply ?

What if one switches off the dedicated GPUs separate power supply ?

What about switching through Motherboard BIOS ?

 

[k1114]

Mobo simply enables and disables but that doesn't mean power doesn't go to it, it just means it won't be used, no data to it, no driver is on.

You can actually switch from monitor input or in windows. That of course means both are on but drivers aren't being used unless the gpu is active. Power usage is still the same, it idles.

Turning off the psu even if it's disabled in bios may not let the pc boot since the gpu can't function properly. It may work just fine but I don't get why you are wanting to complicate this. It still uses the same amount of power disabled, not active or with the psu off.

 

[SPK123]

Mobo simply enables and disables but that doesn't mean power doesn't go to it, it just means it won't be used, no data to it, no driver is on.

You can actually switch from monitor input or in windows. That of course means both are on but drivers aren't being used unless the gpu is active. Power usage is still the same, it idles.

Turning off the psu even if it's disabled in bios may not let the pc boot since the gpu can't function properly. It may work just fine but I don't get why you are wanting to complicate this. It still uses the same amount of power disabled, not active or with the psu off.

Thank you for the response

You are correct in implying that it even if motherboard BIOS allows disabling it, it would still receive power through the PCIe slot - regardless of whether its separate power supply is On or Off at the wall outlet.

So, you say, disabling dedicated GPU is possible through BIOS ( and then switching in BIOS to Intel GPU is possible ) - while it is still connected to the PCIe slot.

Have you tried using Intel GPU, while dedicated GPU is still connected to the PCIe slot ?

 

[SkyNetRising]

I haven't seen a BIOS, that could disable discrete gpu.
BIOS can enable/disable integrated gpu and
it can specify which gpu gets initialized first.

 

[SPK123]

I haven't seen a BIOS, that could disable discrete gpu.
BIOS can enable/disable integrated gpu and
it can specify which gpu gets initialized first.

Have you tried enabling Intel GPU while dedicated GPU is still in the PCIe slot ? Does it allow or does it require taking out the dedicated GPU from the motherboard to run Intel GPU ?

 

[k1114]

Well I'm not going to give wrong info. What's the point in that? If I don't know I would say, not make up some answer.

I have a system with both intel igpu and a discrete card running with multiple monitors on each. If there is no monitor in the dgpu and you are using the igpu, the dgpu is just idling. It's still in device manager. It can still do work. I can still select it in renderers.

There are mobos that can disable pcie slots. I've seen modern asus mobos that can. If you disable it, the gpu won't show in device manager. The fans still spin though. It's still getting power.

It's still not clear why you are wanting to do this.