My host, RackShack.net, is running a limited-time upgrade promotion on all AMD Duron 1 Ghz servers (like my own), offering a new motherboard and 1.7 Ghz Celeron for a one-time fee of $169. That's certainly a good thing, but would my money be better spent if I purchased an additional 512 MB of RAM (giving my box 1 GB of total memory)? The extra RAM would cost $228 per year. Which upgrade would increase the performance of my server, which hosts MySQL/PHP intensive websites, the most?
