The max voltage is the same as it was for 2.1, the rest of the voltages are stock 2.2. You could use setCPU and set 400 min/ 1000 max to save on battery use but still have stock (or slightly better) performance and then bump it up when you want. Quadrant with a max of 1GHz is still around 1400, 1.35GHz is 1800+. If you use 400 min/max when the screen is off it will turn back on just as the phone starts to ring. Let me know how it works for you.
echo 66 > /proc/overclock/max_vsel
echo 1350000 > /proc/overclock/max_rate
echo 1 400000000 27 > /proc/overclock/mpu_opps (stock - 300000000 27)
echo 2 700000000 38 > /proc/overclock/mpu_opps (stock - 600000000 38)
echo 3 1000000000 50 > /proc/overclock/mpu_opps (stock - 800000000 50)
echo 4 1350000000 66 > /proc/overclock/mpu_opps (stock - 1000000000 56)
echo 0 1350000 > /proc/overclock/freq_table
echo 1 1000000 > /proc/overclock/freq_table
echo 2 700000 > /proc/overclock/freq_table
echo 3 400000 > /proc/overclock/freq_table