Here is a list of the other improvements / optimizations implemented in the PC version:
ADVANCED DIRECT3D 11 RENDERING
Far Cry 3 takes advantage of advanced Direct3D 11 features to implement an optimized deferred renderer including tile-based light-culling and fully supporting Multi-Sample Anti-Aliasing, for improved performance and visual quality.
DEFERRED AMBIENT GLOBAL ILLUMINATION SYSTEM
Far Cry 3 features an advanced real time global illumination system capable of computing indirect or reflected lighting, enabling more visually coherent and realistic world rendering. On the PC, this system supports global illumination from dynamic lights in addition to distant light sources such as the sun and the sky.
DIRECTCOMPUTE ACCELERATED HIGH DEFINITION AMBIENT OCCLUSION
Far Cry 3 implements a new and improved version of HDAO that uses full 3D camera space position data to detect valleys in the scene that should be shaded darker, and attenuates the lighting based on valley angle. In Far Cry 3 this technique has been significantly improved in both performance and quality relative to previous implementations.
TRANSPARENCY SUPER SAMPLING
Utilizing advanced Direct3D 11 Shader Model 5.0 features, Far Cry 3 performs specialized Super-Sample Anti-Aliasing of foliage, fences, and other alpha-tested objects, dramatically increasing visual quality, particularly where these objects overlap each other.
DIRECT3D 11 MULTITHREADED RENDERING
Far Cry 3 uses D3D11 multithreading features to simultaneously prepare rendering commands on multiple CPU cores. This helps utilize today’s multi-core CPUs more efficiently and keeps the GPU more fully utilized.
ADVANCED PHYSICALLY-BASED SHADING MODEL
Far Cry 3 features a complete day-night cycle with physically accurate sky lighting based on the CIE Sky Model. Far Cry 3 also features an advanced micro-facet BRDF model, in conjunction with accurate Fresnel, Beckmann specular and Toksvig mapping, for realistic rendering of a variety of materials.
ADVANCED SKIN AND HAIR SHADING MODELS
The Far Cry 3 advanced physically based shading model is combined with approximated sub-surface scattering and rim lighting to render soft, natural-looking skin. Hair shading in Far Cry 3 also achieves its realism via a special anisotropic lighting model.
SHADER MODEL 5.0 CONTACT HARDENING SOFT SHADOWS
Contact Hardening Shadows, which enable the softness of shadows to vary across the scene by calculating the distance between blocking geometry and its associated shadow, were implemented in Far Cry 3. This effect has been tuned to match the artists’ vision of the Far Cry 3 universe.
Source - http://far-cry.ubi.com/fc-portal/en-...t=tcm:6-231-32
May contain spoilers
http://www.youtube.com/watch?v=pK2v19Znkpc