| fuegonian said: My guess is 3 GB's, mainly to be different and i remember hearing somewhere that 4gb wasnt much better than 3gb. It loses efficiency after 3gb... Feel free to tell me how wrong i am and how incredibly ignorant i sound... |
I'm guessing that what you've heard is actually in relation to 32-bit memory addressing. To give you a breif summary, on a 32-bit system (the majority of PCs at the moment), the system is only able to address 2^32 bytes (4GB) of memory. This includes video ram and various other parts that need to be addressed. So if you have 4GB of ram, and a video card with 512meg, you'll only be able to see 3.5GB of your system ram at best because the video card also needs to be addressed. 64-bit systems do no have this issue as they are able to address 2^64 bytes (roughly 17 billion GBs) of ram.
This is not an issue for consoles (esp. as all current gen are at least 64-bit anyway) as they have custom architectures and support for more memory is just a matter of creating it with enough address space.
