The forum and device description state the cpu speed of 2.5GHz.
Isn't it true that this phone runs at 2.3GHz?
Well, I'm not an expert in this device (both because I don't have one, nor am I interested in buying it), but according to the
Qualcomm spec sheet for Snapdragon 801 processors, the CPU is listed at "28nm HPm quad core Krait 400 CPU at up to 2.5GHz per core." Key phrase here is "up to." This depends largely on which version you have:
2.26 GHz quad-core (MSM8974ABv3); International version
2.45 GHz quad-core (MSM8974ACv3); Asian version
And this is just a quick, cursory look with no fact checking, so I could be wrong.