I've got mixed reports on this. Some say it's 233 mhz. Most agree its a variant of the ARM11. However the brand of ARM11 that is suggested is unlikely to be that speed given its minimum clock speed is around 800 mhz. It's possible Nintendo underclocked it. Being that its a mobile processor they often change clockspeed depending on what is needed but, it would be nice to know how powerful the 3DS is. 128 MB RAM isn't bad, it could be better, but not too bad. The graphics card I heard is very good. But it still seems somewhat unknown, or unconfirmed what the CPU is. (please don't post the Nintendo CPU model number; I've read the iFixit tear down).