03/11/2010, 04:04 PM
Here's my data.
All browser tests are done while connected via wifi. When running at 720 or 800MHz, the phone feels quite a bit faster than when at 500MHz. Apps load faster, etc., but the most noticeable change is in the percieved responsiveness, i.e., less lag. Things that tend to be laggy or not smooth at 500MHz, such as flipping between launcher pages quickly with several apps open or scrolling through long lists, respond better. However, even running at 800MHz does not eliminte all hesitation in the OS (disclaimer :P). The phone does not seem to have any issues at these speeds other than increased battery drain and slight increase in heat with heavy usage. Under light to no usage, idle drain seems comparable to 500MHz. All apps I've used run without flaw. Subjectively, there is not much (if any) of a noticeable difference between 720 and 800MHz. The clock indicates a small improvement from 720 to 800, but it isn't noticeable to me while using the phone. For example, the 20% increase from 500 to 600MHz feels like 20%, but the 20% from 600 to 720 only feels like maybe 8-10%, and the change from 720 to 800 isn't something I would likely notice without a stopwatch.
See attached screenshot for all of the numbers in a spreadsheet.