Do read this Sticky in the forum and I'll tell you why.
http://www.overclock.net/showthread.php?t=172
You will notice the 2200+ is available in both the "A" and "B" core and the "B" core is the better OCer. Get CPU-Z @
www.cpuid.com to tell you which it is.
A few things to know.
1. Ocing requires an "unlocked" CPU. Try and if the multiplyer increase does not yield an increase in the total Mhz out put of the CPU its locked.
2. OCing requires increasing the CPU voltage and that increases the heat the CPU puts out so you need a better FHS (Fan Heat Sink) to cool it. Good case air circulation is a must to to move extra air in and out.
3. Your RAM is relevant too! It must be as fast or faster than your CPU if you don't have a divider to allow the RAM to run at slower speeds than the CPU. CPU-Z will have some info on your RAM too.
4. If you don't tell us everything about your system we can't guess
List PS (power supply) Brand and wattage, vid card etc... and all the extra stuff you have in the box too!!!
5. Opps... forgot... Patience is a must, big steps in OCing = big trouble and know how to reset the BIOS/CMOS so if you crash it from OCing it to far of use to little voltage per the OC.