[SmG xBr4v3x]

Brave he has an Alienware Aurora I believe, the bulky af one from like 10 years ago.

The aurora r1 isn't that old lol.

Looks like it would take regular DDR3 ram.

The only problem I could see happening is that he's not using the same ram. For some reason, Dell made early Alienware computers require for ALL ram sticks to be EXACTLY the same, or you wouldn't be able to boot. 
 
So, get Six 4GB sticks of DDR3 ram that are the same speed(and same models if you can to guarantee them working 100%) Make sure they're not server ram(ECC ram).

The Aurora R1 usually has problems with high speed ram. I suggest getting all sticks to be 1333 or 1600, nothing higher.

You should do just fine running 12gb of ram though, so just get 3 4gb sticks and install them in slots 1,3,5. You could get higher clocked ram, but you'd have to change things in the bios to get them running at their full speed. I have a few links for where people discussed their ram setups with multipliers and such if needed.