What does it matter? Scores are just that, scores. They are synthetic and don't reflect actual performance in any given game or application UNLESS you are so far off from the average for your device that it's clear something is wrong. And by that, I mean off by thousands of points.
If the game or games you are primarily worried about are not performing to the level that they should be, based on what others with the SAME hardware are seeing, THEN you might need to address something like the OS, or drivers, or cooling, or a potentially faulty card, but until then you are trying to worry about numbers that really don't reflect anything substantial or able to be normalized because everybody has different memory, different memory capacity, different CPUs, different CLOCKED CPUs, different motherboards, different cooling arrangements, different storage access and performance, and so on, so there is no correlation really between person 1 getting X score and person 2 getting Y score.
If it's working for you the way it should, that's all that matters. If it's not, then it can be addressed.