2 same wl-500gP with diff. CPU performance?

[dyonisos]

I have 2 pieces wl-500gP of the very same type (same cpu speed as per /proc/cpuinfo and memory) and setup running as AP with palantir. Only most important modules are installed for palantir to work.
I would expect both wl-500gP to show the same cpu load with only palantir running. The fact is that one wl-500gP shows 10% more cpu load than the other. Why is that? Is such difference in CPU performance possible with 2 true same CPUs?

[dyonisos]

problem solved - a higher resolution set in the palantir application parameters caused the higher cpu load.