I recently upgraded to Windows Fall Creators update and I think that's when I noticed this slight issue - the IGP in my Intel Core i5-4310U is stuck at 600MhZ (or 599MhZ / 588.8MhZ depending on SW which displays the value) even though the base clock should be 200MhZ, if I am not mistaken. The boost to about 1.1GhZ works OK, although I noticed for some reason it holds these higher frequencies for only a few minutes and then goes to 600MhZ. Temperatures are not a problem, maximum I reached was about 78 °C (while boosted to 1.1GhZ).
I am pretty sure this wasn't the issue before I upgraded to Win10FCU, but I could be wrong. I tried pretty much all versions (about 4 or 5) of driver for the 4400 (of course uninstalling the previous one using DDU). I settled for the Dell issued driver (Intel driver date 10/16/2017, 220.127.116.1135).
Maybe the software doesn't read the values correctly? Although I tried GPU-Z, Intel extreme tuning utility and HWINFO - all the same, so if this is the case, some lower layer doesn't present the values as it should.
The fact that it doesn't underclock to the base frequency is not really something I would notice on day to day basis, but the boosting only lasting for a couple of minutes (again, temperatures are OK and this wasn't an issue like two months ago, before upgrading windows) is more of a problem..
BTW, it happens independently on how many monitors I have connected, it is the same with two external ones as well as with everything disconnected, laptop running from battery only and only the laptop display is on..
The power options in both windows and Intel "graphics settings" are default.
I also attached some screenshots.. What I find interesting is - GPU-Z doesn't report higher frequency even if there is about 25% load on the GPU. But if I try to benchmark or play a game, it goes to 1.1GhZ without problem. It seems like it only displays a different frequency if there is sustained load on the GPU, otherwise it is just stuck at 600MhZ..
Answers (N/A if not applicable)
Provide a detailed description of the issue
Please place an X to the right of the option showing how often you see this issue using specific steps. (Ex: 'Every few times a game is started it flickers.' <- This would be "Often")
Always (100%): X
Very Sporadic (<20%):
Brand and Model of the system.
Dell Latitude E7440
Hybrid or switchable graphics system?
no, only integrated graphics..
Make and model of any Displays that are used to see the issue (see note2 below).
Integrated laptop display, the GPU itself is: Intel(R) HD Graphics 4400
How much memory [RAM] in the system (see note2 below).
16GB total; two sticks of 8GB DDR3 1600MhZ in dual-channel
Provide any other hardware needed to replicate the issue.
Hardware Stepping (see note1 below).
HD ID screenshot attached
Operating System version (see note2 below).
Windows 10 - 1709 build 16299.248
VBIOS (video BIOS) version. This can be found in “information page” of CUI (right click on Desktop and select “Graphics Properties”.
Graphics Driver version; for both integrated Intel and 3rd party vendors (see note2 below).
Driver Version 18.104.22.16835
SW or Apps version used to replicate the issue.
Single display, clone, or extended (see note2 below).
doesn't matter, happens all the time..
Display resolution & refresh rate setting of each display (see note2 below).
AC or DC mode, i.e. is power cable plugged in or not?
both, plugged or not, doesn't matter
How to repro
Please provide steps to replicate the issue. These steps are very crucial to finding the root cause and fix.