AFAIK (and correct me if I'm wrong, please), there are no specific standards for graphics card dimensions, only for power draw. That's why you see a lot of standard ATX cases advertised as "Fits 300mm cards", it's like an extra feature. In this case, some manufacturers decided to go 3 PCI slots wide on their cooler designs, and the A4 only has room for two slots. Not a conflict of rules and regulations, but of design philosophy.Also: What is the reason these new models don't fit in the A4-SFX? Obviously because of their dimensions, but is this because they don't follow *TX (ATX? ITX?) rules, or is this because the A4-SFX doesn't follow the guidelines?