Re: Computer choice
One powerful card is the better choice, allows you to add a second when you go to upgrade instead of having to replace two, not to mention using less power and producing less heat.
Haven't heard anything about Adata SSDs, google for some reviews.
Sound card is built into the motherboard.
As to if everything will fit, this thread has gotten rather convoluted so not sure what your final parts list is.
Best bet is to google case reviews, you'll eventually find one that says what the max graphic card length is.
Please read through the thread thoroughly before responding.
Nobody wants to read a wall of text, formatting is your friend.
i5 3570k | 8GB G.Skill 1600MHz | R9 290 | SeaSonic 750X