Have 8GB of RAM, and I listed in OP that the WD external is 3.0.
Problem is that the folks at Game Stop told me if I install it on the external drive, and the game does not run right, I cannot return it. If I return it now they'll give me a store credit.
The point I tried to make w/ them is that I should have been told before purchase of the VERY UNUSUAL HUGE AMOUNT OF HD SPACE required for that game install, even though in small print on the box that info is listed.
It has been known that for a least a month that the install size is rather large and it is so very rare that a high end system doesn't have some form of large mechanical internal storage especially considering a $300 cpu, a $500 gpu, $175 case, $100 headphones and a $600+ monitor. You can pick up a 1tb drive for $50.
My ssd is reserved for a select few games that I want to specifically load faster otherwise everything goes on the mechanical drive, mainly the massive steam collection that I have come to realize that I play more often if the games are actually installed.
Also, people keep saying that 50gb is a lot for a game install but it really isn't. Granted for this particular game that is a LOT of uncompressed audio and their reasons are kinda meh. But there have been plenty of games that have came close to the 50gb mark. BF3 and it's xpacs broke 40gb. WoW before the recent optimizations was close to 40gb. I even had over 60gb worth of L4D2 thanks to addons and maps. I've seen people with massive skyrim installs.
There's a lot of money sitting on my desk right now but I still feel that ssd space still commands a premium and the stuff that goes on it has to be weighed carefully and therefore I have a nice large hdd. 240gb ssd = 3-4tb hdd cost wise.