What you can do is, there are heat pipes bulging out on 2 sides, and the mounting plate is symmetrical.
So basically, orient the bulges parallel to the RAM slots and you should be good.
You won't have any issues with standard DIMMs or even the low profile ones (Have 2 sticks of Corsair Vengeance LPX).
You wont be able to use high profile RAM.
But as you said it covers the whole board, so you cant actually see the RAM, so you can get away with buying the cheaper green beans.
Thats also why the shuriken is so good, the heatsink is absolutely massive, and because the fan covers it all, it cools the CPU as well as
the rest of the mobo components
Much good, very recommend