I dont know if it makes a difference really. I read some where that most people who over clock there device but those kinda numbers only seem to get a 10% increase in speed and power. from what i read (and i am paraphrasing) it can make your device slightly more unstable. cause more frequent crashing then what we already get with the n900, and all kinda random cracked up cell phone operations.

they say it will, in addition to voiding out what ever warranty you have cause your over all life span of the phone and battery to decrease dramatically because the processor is working harder then it was designed to work for.

My friend has a samsung moment. clocked @ 800 Mhz. It's android OS I thought this meant her phone would be faster than mines because the n900 is only 600 Mhz. but this was not the case. her phone was much slower than mines. and it froze more often. ANNNNND she could only do pop access for hotmail (that sucks she turned it back in afew weeks later for a black berry). I don't think its worth it to take those kinda risks. unless u absolutely need to hav emore speed and power. i am just fine with my lil 600 Mhz. it works good for me