Computer Upgrade

I was looking through all the stuff that I bought for my new computer and noticed that I bought the Athlon XP 1600 when I thought I had bought the 1500. I went to my computer and updated the BIOS and guess what?! My computer is now 100 Mhz faster and the RAM is 33 Mhz faster. Only had the computer working for a week and it already feels like I got an even newer machine!