So what are the advantages of running 64-bit with less than 4GB RAM? Here's a hint, driver and software compatibility aren't. Neither is memory usage. The jury's still out on mainstream performance. All told, unless you have specific 64-bit requirements or 4GB+ RAM, everyone is better off with 32-bit for now. Especially the n00bs. There's nothing extra special or l33t about running 64-bit. It won't solve your financial woes or make you a better lover. It's just address space folks -- and a lot of headaches for very little return.