For those who don't know MXM is basically PCIe for mobile laptops and was a standard used widely in high end gaming laptops. I made a video that goes over MXM and the upgrades I did for those who are interested. 
 
https://youtu.be/cY1dUwLrxZI 
 
Mod rigs: https://www.modsrigs.com/detail.aspx?BuildID=44193 
 
Basically this laptop originally had and > was upgrade to:
 
Intel Core i7 3920XM                      >      Same CPU OC to 4.1Ghz 24/7 and 4.7Ghz for CPU benches 
32GB DDR3L 1600Mhz                    >      32GB DDR3L 2133Mhz
2x SATA3 SSD RAID0                      >      Samsung 980 PRO NVMe (MXM Adapter) + the RAID0
nVidia GeForce GTX 680m SLI          > nVidia Quadro RTX 3000 
18.4" 1920x1080 Display 60Hz        > OC to 80Hz 
Killer 1103 + BT 4.0 Wi-Fi 802.11n  > Intel AX210 Wi-Fi 6E + BT 5.2 
Windows 7 Pro                               > Windows 10 Pro    
 

 

 

 
 
Here's some benchmarks and pictures:
 
 
 
 
 
Benches:
 
 
 
    

Great mod. Thanks for showing us.

rjohnson11
This is truly unique mod. 

Indeed, very nice

Pretty cool! You have made the performance even better. I don't know my way around the inside of laptops, this is interesting. Thanks for posting! +1