Question When playing games, they use the iGPU to render instead of dedicated GPU ?

[Darkzen]

As when gaming the CPU spikes to 100% but GPU usage stays at 40%

My CPU is i7-7600u with HD 620 graphics which it seems that it's not using the dedicated graphics card in my laptop.

 

[Aeacus]

which it seems

It only seems so.

CPU utilization also includes CPU own compute and not just iGPU in it. So, it is difficult to tell how much of entire CPU utilization is iGPU and how much is CPU compute.

CPU spikes to 100% but GPU usage stays at 40%

Means that you're CPU bound. Namely, dedicated GPU is far more powerful than what CPU is able to output, hence why CPU is 100% and GPU is 40%. This is common with games that are CPU bound. E.g strategy games (Cities:Skylines for example). If you were to play graphically intensive game, you'd max out your dedicated GPU, rather than CPU.

 

[Darkzen]

before it used to run at 100% the gpu

 

[Aeacus]

before it used to run at 100% the gpu

Then something has changed. What's changed?

 

[Darkzen]

idk it is even crashing my game

 

[SkyNetRising]

My CPU is i7-7600u with HD 620 graphics which it seems that it's not using the dedicated graphics card in my laptop.

What is model name of your laptop?
Does it even have any other graphics than integrated?

 

[Darkzen]

It’s dell latitude 7480 and it only have intel hd 620 dedicated graphics card

 

[USAFRet]

It’s dell latitude 7480 and it only have intel hd 620 dedicated graphics card

The HD 620 is iGPU. Integrated in the CPU.
https://www.notebookcheck.net/Intel-HD-Graphics-620.172256.0.html

You do not have a dedicated GPU.

 

[Darkzen]

But in my laptop it is written dedicated graphic card

 

[USAFRet]

But in my laptop it is written dedicated graphic card

Written where?

Please show us.

 

[Darkzen]

Oh my bad it is internal.so what can I do now

 

[USAFRet]

Oh my bad it is internal.so what can I do now

With a laptop, not a lot.

 

[Aeacus]

so what can I do now

Nothing.

Laptop isn't easily expandable as desktop PC is. So, what you have - you are stuck with it.
Only small thing you can do - play games on lower resolution and at lower graphical settings to gain a bit more FPS. Also, don't have any background programs running when playing games (e.g web browser, discord etc).

 

[Darkzen]

Cmon please tell some way it used to work

 

[SkyNetRising]

Cmon please tell some way it used to work

Don't run on battery, when gaming.
On battery - power plan changes to low performance mode.

Make sure, your laptop doesn't overheat. Monitor temperatures
Purchase a laptop cooling pad, if temperatures are too high.

 

[Aeacus]

it used to work

"Used to" is the key here. All hardware (CPU/GPU etc), will loose performance over time. In general, that performance drop isn't noticeable enough since it's gradual.

Software wise;
* format C:\ drive
* make a clean Win installation

This will get rid of all bloatware and malware (except rootkits) and is good in terms of PC's (laptop) functionality. It's like restart for hardware, starting out from clean Win install.

Of course, Windows updates are notorious in messing up PCs, reducing performance and what not. E.g Spectre and Meltdown vulnerability fixes dropped CPU performance up to 30%. Further reading: https://www.extremetech.com/internet/291649-intel-performance-amd-spectre-meltdown-mds-patches

 

[USAFRet]

Cmon please tell some way it used to work

What has changed from then til now?

 

[Darkzen]

Nothing