That noise came from the fan. The GPU is capable, but notebook is usually bad for gaming due to heat problems. Your fan might be forced to run at full speed to cool down,hence the noise

Perhaps add additional fan? Or in room with air conditioner? Play outdoor while it's snowing? XD

It could have just been the fan which does "vroom" up when things get hectic. Explosions, multiple particles or just a barrage of things in general happening all at once would cause more heat and thus the fan goes higher which is normal.

I am in a similar situation as you but my laptop is slightly newer but no dedicated GPU. So, you have a leg up in that regard. It really depends on the game. I was unable to play Lords of the Fallen, for example because it just ran slow on my laptop but I'm able to play Bioshock just fine. Even with Lords of the Fallen, it was ok to play but it ran a bit too slow for my taste. Shadow Warrior also did just fine. You could probably even play Witcher 1 and 2 but 3, I would highly doubt.

I have also played old games like Gothic and MDK without any issues. You could try pretty much any game you want to try on it and see which ones would run. I definitely think Sims 3 would run just fine, unless it's the newest one. What are they up to now, 12? Anyway, just try and see what could run. I'd gather a lot of games from here would work fine just as was mentioned before by someone.Since you have a dedicated GPU, you could probably run a lot more than I can.

Check out gameplay.intel.com. It's a database of settings for games that is maintained by intel. You can enter your processor and search for games and it'll give you optimal settings for your cpu/gpu.

My laptop has a Geforce 920mx as my discrete gpu, but I've switched to my integrated gpu when I'm trying to conserve my battery, and it also happens to be an HD 620. There are certainly some things that you won't be able to run, but it's certainly fairly capable as far as integrated gpus go.

Or one of those cooling pads?

And that "vroooming" is probably regardless of the capability of your graphics card. Intense games will stress your CPU and require more cooling.

You will probably run across two main problems:
1) Games which just don't play well with Integrated Graphics cards because they were not programmed to work with them correctly. Integrated graphics have evolved quite a bit in recent years and some developers didn't anticipate that they would be capable of running their games.
2) Games which require 4 GB of VRAM which will leave only 4 GB for your system. Running at lower resolutions very well may resolve such issues.

Pretty nifty. Thank you.

nice but doesn't really have the option for GPU, only integrated

gameplay.intel.com/ clickable link

o.O Fallout 3 is considered high-end? Oh dear.

to be honest, your laptop is more than capable of running fallout 3 due to the fact that ive played that game at 30 fps with dips into 20 something frames at times on an intel hd 3000. In fact its capable of running most games from 2010-2017 depending on their graphical requirements. Optimizations and tweaking are also some factors which can play a major role when it comes to performance, so just try out a few things and see what works for you. =)

Ah yes, cooling pad. I forgot what it's called

Graphics play important roles in playing games and so more, helped me to get the solution of this.

LOL. My 12 year old laptop which I am using now is a real garbage compared to your laptop. And I can play all those games, Fallout3 in highest settings.

Do not underestimate your laptop. Just do not keep everything open while playing games. Like skype, browser pages, other hardcore programs etc and you will be fine.

https://www.notebookcheck.net/Intel-HD-Graphics-620.172256.0.html

When you open the link scroll down, you will see "Game Benchmarks" part where you can check newer games and if they can run properly with your intergrated graphics.