That looks like a really tight fit. What kind of RAM are you using? Can you still fit a fan on the side panel?
The only clearance issue I had was with the ram. The Ripjaw heatsink was about 1mm too tall and would not clear the fan blade. This was easily fixed by simply removing the HS off one stick. The side intake has a filtered Antec tri cool blue 120mm.
What motherboard are you using ? If your gpu is using the 300's top slot, the 12x might not fit.
My only con was that the base was very uneven, thanks to some bad nickel plating. I could have RMA'd it but decided to lap it instead.