Back in September, the Photoshop team provided advanced notice that Photoshop CS6 (13.0) will be the last major version of Photoshop to support Windows XP.
In addition, all subsequent Photoshop feature updates specifically for Creative Cloud members will also require 512 MB of vRAM in order to use the 3D features found in Photoshop CS6 Extended.
Please note: The system requirements for Photoshop CS6 Extended have always indicated that you need 512 MB of vRAM, but this wasn’t a hard enforcement.
Users who do not have 512 MB of vRAM will see the following dialog if they try to access a 3D feature in future Photoshop updates for Creative Cloud:
We hope that by providing this information early it will help you understand our current decisions around operating system support and where we we’re headed with future releases of Photoshop. We encourage all customers who are currently using the 3D features in Photoshop CS6 Extended to begin upgrading their video card/hardware now so they can fully take advantage of future Photoshop innovations as soon as they are available.