Texture quality isn't only dependent on VRAM. It's also dependent on Texture Fill Rate which is a function of TMUs and clock. An HD7950, which can be found for $200-250 has 112 TMUs at 900MHz vs. the PS4's 72 TMUs at 800MHz and the X1's 48TMUs at 853 MHz. A mid-level card absolutely demolishes the two consoles when it comes to texture fill rate, and that's before even considering how easy it is to overclock these things. My overclocked 7950 is currently sitting at twice the fill rate of the PS4.


