Gamster123 :
I know that one is just medion and the other is a medion erazer but were can i see the real names?
Just knowing the model numbers does not always have the info needed to figure out the speed of the systems.
CPU, RAM and video card are the three major things you need to compare.
Benchmark software as already posted is very good also since it measured the full system overall.
PassMark is good for that, it gives a good all-around speed including CPU, RAM and Video Card. For pretty much pure gaming performance, 3DMark is good to run.