2 same CPU laptop but different performance 50% slower / Crazy !

Hello
I noticed this issue when I was using Handbrake to encode files
I started handbrake on both laptop at the same time, using intel quicksync decoding option and the PRESETI use is : very fast 1080p 30fps // CODEC is: x265 10 bits, on both laptops everything else is DEFAULT ( I use intel quicksync, on both)

One had a 3GB file to encode, the other had a 5GB file, both file to encode come from camtasia software, m4v files
while I am writing I have (doing batch endcode) Have finished 7 files with one laptop and the other one, I have just finished the first one, which is the 3GB file (the other laptop cumulates approx 13GB maybe more, that is done in comparison) everything else is pretty much as default

One goes 50%+ faster than the other

I also see on the slow laptop an AVG FPS of 20.5 compared of the other 32.5 (In Handbrake I see this while it is encoding , but th files are very much the same, m4v from camtasia

NOTE, the slow laptop got a SSD drive in it

I went in taskmanager and I saw something weird : in details the fast laptop got around

430.00K of memory (active private working set)
CPU value is 50
also.... virtualization : Not allowed


Watch this one =
The slow laptop memory around
995,000K memory(active priv working set)
...CPU value of 90
Virtualization ...disabled (the other one is not allowed this one is disabled, why aren't they both the same?)


These are really weird comparison of identical CPU laptop (8250U 1.6 with 8GB Ram)

The only difference being the slow laptop got a SSD in it, the other has optane memory + HDD
Usually it is the SSD that is faster !! This time quite the contrary

I am typing this on my tower, I can take screenshots if someone need something, or
Please can you help me, why virtualization is disabled on one of the laptop, and why is it taking all these ressources?

There are a lot pieces here, but start with this:

Make sure that you are really comparing apples to apples. I would suggest this as a test:

1) Place a source video file on a thumbdrive.
2) Use handbrake to perform your encoding and write the encoded file back out to the same thumbdrive.
3) When done, note the amount of time that it took.
4) Take the SAME thumbdrive to the other system and repeat the same process making certain to use the exact same settings in Handbrake.

The idea here is like this:

First, this eliminates speed differences between disk subsystems in the 2 systems. Okay, there will still be some involvemet as it may store temporary data on the HD, Windows is still using it's pagefile, etc. But this will minimize those differences.

It's also very important to to use the same source. Some videos will compress far faster than other videos will. For example, animation tends to be far quicker to compress because the video is far less complex than film. Also, older movies such as those with a lot grain from the original film tend to present more of a challenge to the compression algorithms. Finally, you may notice that the last few percent of a movie (when credits are being processed) often compress faster because the screen is mostly one color (black). Bottom line - for such comparisons, make sure to compare the exact same footage.

I won't even tackle the other issues, at least not yet. There are so many things to consider such as what programs are running in the background, disk fragmentation (especially for rotating media), various settings in Windows, BIOS, etc.

But, start with the above to at least get the testing on more of a level playing field.