High clock speed cpu give lower Cinebench score??

[lian9998]

I have 2 computers. one is a desktop and one a gaming laptop. Today I test them with Cinebench.

 

while testing, I use task manager to get clock speed of cpu. Clock speed does not change during test. 

one has clock speed 3.89 and score is 841

one has clock speed 4.09 and score is 825

both cpus are kaby lake with 4c/8t, with 256K, 1M, 8M L1-L3 cache.

I try to run the test many times and test after clean reboot, but the one with higher clock speed always lose. 

I am confuse. I want an explanation. 

[Enderman]

What are the exact models of the CPUs?

[jiyeon]

16 CB score is nothing at least to me, it's more margin of error more than anything especially with a 200MHz difference. Can also come down to luck of the draw.

[lian9998]

2 minutes ago, seoz said:

16 CB score is nothing at least to me, it's more margin of error more than anything especially with a 200MHz difference. Can also come down to luck of the draw.

or because installed software. I got that. 

[nick name]

It can depend on how soon you run the test after a reboot. You also may want to reboot twice after changing the clock speed. Also, make sure you're not doing anything while Cinebench is running.  It will lower the score.  You will almost always see Cinebench score vary from one run to the next. Try three and average them together. 

 

Also, make certain you have the same programs open or closed because any background tasks will reduce your score. 

[triforcemack]

a system can vary up to 16 CB points depending on the background load. well within margin of error.

[SkilledRebuilds]

I gained way more than I thought,...extra CB points just from closing HWinfo and Msi AFterburner (Due to their Monitoring sensors refreshing every second) with 1% CPU time at random. Background software, Driver versions, all the nitty gritty stuff,... has the slightest effect as well.

[Tam3n]

Run it in real time priority, if you want all of your cpus attention to just rendering the image