FREQUENCY Nokia LV ULV XLV ideal
0 MHz 30 30 25 30 30
125 MHz 30 30 25 20 30
250 MHz 38 38 25 30 30
500 MHz 48 48 33 33 30
550 MHz *54* 48 38 38 33
600 MHz 60 *54* 38 38 38
700 MHz 54 45 45 45
750 MHz 54 45 45 45
810 MHz 54 48 48 48
850 MHz 54 48 48 48
900 MHz 54 *54* *54* *54*
950 MHz 54 54 54 54
1000 MHz 60 60 60 60
1100 MHz 72 72 72 72
1150 MHz 72 72 72 72

check this... lv, xlv etc all use different voltage. The best one would be ideal with 500 950. the voltage are similar to normal. check the voltages - the lower the longer the battery!

http://wiki.maemo.org/Overclocking (summary) as it doesnt look right when i pasted it