I've made a little app for setting the CPU speed on the TF201 up to 1.6 ghz. It may be the easiest overclocker yet.
Step 1. Install the Apk.
Step 2. There is no step 2.
Once this application is installed, you can switch speeds as usual using the ASUS statusbar. The speeds become (by default, but there is a configuration menu) as follows:
Power save: 1.0 ghz
Balanced: 1.3 ghz
Performance: 1.6 ghz
Root is required, but a locked bootloader is fine. The app makes no permanent changes to anything, and uninstalls cleanly (although a reboot may be required after uninstall)