You mean whether it has accel or not? The DPI doesn't change, but some mice may have a problem due to break down of the "signal" or some other inherent flaw.

Read this:

http://www.esreality.com/?a=post&id=1265679

The question is tautological.

CPI *by definition* specifies the distance measure of a single count. If you are fixing the CPI then that measure is fixed, and so it cannot vary with mouse speed.

What you're really asking is "does the effective CPI vary with mouse speed?"

The answer is "only if the mouse isnt tracking correctly". The speed at which this begins to happen is the 'perfect control' speed from MouseScore (by definition). All mice will eventually crap out if you move them fast enough. But for some mice, the perfect control speed may be lowered if they don't like the surface, for example.

Actually the CPI aren't 100% consistent even inside the "perfect control speed".

Becauce surface affects the performance of the mouse/sensor the biggest flaw of the ESReality Mousescore is that it's done on only one surface.

SSSSSSPEEEEEEEEEEEEEEEED DISPRACMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANT!!!11111

http://www.youtube.com/watch?v=zBwJYqNpN9U&feature=related