Adobe no longer sells CS6, but existing licensed users can still install it. I can explain legal second-hand license transfers or Adobe’s current subscription options.
For those who dislike the monthly "rent" of Creative Cloud, CS6 represents the peak of the perpetual license era. The Risks of Portable Software adobe photoshop portable cs6 131 x32 x64 multi 64 bit
Starting with the 13.1 (Ps CS6) subscription, enabling the 3D features requires a 512 VRAM minimum. Even with the perpetual 13.0 ( Adobe no longer sells CS6, but existing licensed