Welcome to the Dell Community @One_N_Only_Roy 

Not sure if this is the new or old model???

Alienware Alienware m15 compatible upgrades:

https://www.crucial.com/usa/en/compatible-upgrade-for/Alienware/alienware-m15

Crucial 32GB Kit (2 x 16GB) DDR4-2666 SODIMM

Bets regards,

U2

@One_N_Only_Roy 

If you can provide the "new m15's (legend Design)" model number I could search at Crucial to find out???

Or you could go there yourself and do the search.

Regards,

U2

Thank you @Alienware-Eimy 

@One_N_Only_Roy 

That confirms because of the CPU and memory type you can upgrade to 32GB memory. 

Always update your BIOS before upgrading Memory or CPU .

https://www.dell.com/support/home/us/en/04/drivers/driversdetails?driverid=WJG14&oscode=WT64A&productcode=alienware-m15-r2-laptop

And there is a good possibility you could upgrade to 64GB

https://www.ebay.com/sch/i.html?_from=R40&_nkw=64gb+ddr4&_sacat=0&Capacity%2520per%2520Module=32%2520GB&_dcat=170083&LH_PrefLoc=1&_sop=15

Regards,

U2

Edit: Please refer to @Alienware-Eimy post.

Hi,

As I explained before, the MAX supported memory for the m15 Legendary Design will be 16GB. And the memory can't be upgraded after purchase since it is integrated on the system board.

@Alienware-Eimy 

Thanks for clarifying that.

So the "Legendary" design is an  Alienware m15 R2

Regards,

U2

Hi Dell designers,

I was looking for a powerful laptop for dev, some gaming and also be light.

This seemed to be the one but it’s missing the much needed 32G ram.

Too bad guys, I would have to buy the macbook pro which has about the same price.

Not a big fan of the soldered RAM.. makes no sense.. but that's why I'll stick to the older style Alienwares or Asus ROG.

In the same boat, I need 32gb of RAM, and the M15 R2 would be perfect (would have already bought) if there was a version available with this configuration... I dont want the R1 version as there are a ton of reviews stating that the old model has thermal issues, and the area-51 is a monster and not very travel friendly with its 2 power supplies.

I need a highly mobile laptop that I can use while traveling for work (25% of the time), when traveling I dont need the graphics horse power (simple stuff like web browsing, email, speedsheets, etc...), so a small GPU in this config would be great as well, like a 1660ti. The other 75% of the time, the laptop is docked and I would use the Graphics Amplifier for both work and gaming.