New
#11
That's when you tell the vendor that you will no longer be a customer of theirs. It is inexcusable for any vendor, here in 2009, to be saying this.
I can't believe this is still asked (again, it's 2009). Anyway, the biggest difference is the amount of memory supported. If you have 4 GB, and want to use 4 GB, or more, you need an x64 OS. As more and more apps become x64, or ship with x64 executables, like Office 2010, the performance differences will grow. As for graphics...I'm not sure what you mean. Do they look any different? No. Will the performance be different? it can, especially as games become more intensive. That's not necessarily due to the game itself, but the fact the system can address and use more memory.