Concern About New Drive

I bought a new SN750x today but I am concerned about whether or not my drive could have an issue. I already updated the firmware. Is there something else I can do to achieve a close read and write as indicated on the box? Could it be because I am using a Gen 4 SSD on a Gen 3 slot cause the issue? Any help would be appreciated.
SN750x Benchmark

Crystal benchmark this is one of the many available.
There is no software benchmark this be considered today as industry standard = 100% trusted.
All measurements contain mathematical Error factor.
If measurement results, they are +5% and or -5% that your comparison target, then the hardware (HDD/SSD) it does PASS this evaluation.