The system will run both sticks at the timings of the slower stick so that shouldn't make any difference at all
I believe these are the exact specifications of both modules:
G.Skill 4 GB DDR3-1600
1,5 volt
Timings CL11 11-11-28
Kingston ValueRAM 4 GB DDR3-1600
1,5 volt
Timings CL11 11-11-35
This is the only part where my system seems to be faster than yours, so it was the only explanation I could think of.
But if you look at my first post you will see that I also get better results with the AMD R 3400G PRO and it uses DDR4 memory with slower timings.
Maybe the difference is simply the browser then. Do you get different results when using Firefox 115?
You can reload the page several times by doing Ctrl + R in Firefox and then you will normally see that the values mostly stay the same and sometimes vary by 1ms or 2ms.
Now that I did the test again on the i3-3240, I see that it can achieve better results:
If you would like to know, your hardware is perfect for Clear Linux, and this is one of the fastest operating systems in existence in many areas.
You can always install Clear Linux in dual-boot on your system with windows.
What you can also do is install it permanently on a fast USB 3 flash drive, which is what I did. It's going to work very well with your hardware.