While the game requires a decent GPU to run max, a CPU is still quite important. A GeForce 9800GTX/GTX+ and Intel E7400 can run the game maxed (4K shadow) at 60FR with drops to 55, however a GTX 260 with an AMD X2 4850e maxed (4K shadow) will have larger FR hits due to the lower-end CPU.
Just saying, don't get a very powerful GPU and leave the CPU in the low-end of the range. :)
As for the Self-Shadowing thing, Self-shadowing takes a very big hit on the GPU's VRAM, Skuzzy said
4096 = 128MB of video RAM being dedicated to one texture. Even with 512MB of dedicated video RAM, you could run the video card out of RAM with this setting.
8192 = 512MB of video RAM being dedicated to one texture. A video card would have to have 1GB of dedicated video RAM to run this setting, and even then it will get close to running out of video RAM.
As for the Self-Shadowing thing, Self-shadowing takes a very big hit on the GPU's VRAM, Skuzzy said
4096 = 128MB of video RAM being dedicated to one texture. Even with 512MB of dedicated video RAM, you could run the video card out of RAM with this setting.
8192 = 512MB of video RAM being dedicated to one texture. A video card would have to have 1GB of dedicated video RAM to run this setting, and even then it will get close to running out of video RAM.
Always makes me wonder why they even put those options in when they know they'll have to tell a hoarde of people calling/emailing Support to turn them off... :)
For the casual passerby on this thread, remember that a 1GB video card tends to be slower overall than its 512MB counterpart.