Same GPU different values

[ItsPat]

Specs:
Ryzen 7 3700x
RX 5700 XT Saphire pulse
4x 8 GB Ram 3200
Mainboard: MSI B450 PRO VDH max

I do not fully understand my evaluation. I get 8829 points and when I click on compare online, a gaming PC 2020 with the same specs is displayed where the PC gets 9216 points. How can that be? (Another mainboard is installed- but is that the reason for the loss of performance?)

I also let a colleague do Time Spy with exactly the same GPU and he also scores more GPU points (approx. 100) he also has a different mainboard.

Is it because of my mainboard?

[UL_Jarnis]

Without links to results, cannot do more than comment on a more general level.

The variance between runs on 3DMark is up to 3% - for score of ~9000 that would be almost 300 points. Your 8829 vs 9216 is slightly outside of this but the difference is so small that this could purely be due to things like background processes, exact BIOS and driver versions or RAM speed differences. The result you compared against online might be overclocked, which would easily explain such a difference. No links, so can't say for sure.

100 point difference is fully within run-to-run variance - you'd need multiple runs on both systems to get better accuracy. If you run just once on two systems, 100 point difference would be "its the same score". If you run five times on both systems and take an average of those five runs for both, you could perhaps then say if there is actually a difference.

3DMark score is mostly affected by the GPU and its clock speed, including how high it can turbo. Secondarily it is affected by RAM speed and CPU speed/clock speed. You can look at the sub-scores (Graphics score and Physics score) to try to determine which component is causing the difference in the overall score. RAM speed differences show up in both.

[ItsPat]

thank you so much for the quick feedback!
i tried it again and here is the link:

https://www.3dmark.com/3dm/50137276

so as you said it is ok and the difference is not that big but i am really wondering because it is always a GPU score of 8 914 and with my friends pc - exact same GPU - it is always 9005. And of course the main score is not that bad aswell but it would be great to know what is the reason for the differnce .....