Does it affect it's operation in any noticeable way to you?
Well I have it since less than 24h so I can't tell... But could someone test that on his Macbook and tell me if i'm the only one with that problem?
Nope see here https://forums.macrumors.com/threads/1877288/ seriously doubt it`s a fault, more a design criteria, no fan and all...
Q-6
TurboBoost is not a switch, it is not "on or off", it is a range, a gradient, based on many factors like workload, thermal dynamics (ambient temp, core temps, system temp, skin temp, etc), battery/mains power status, and dual-core vs. single-core workloads, etc.
Bottom line, 2.9GHz is the max it will Turbo to when there is:
1) Single-core work
2) All temps are low enough
3) On mains (if configured to clock down on battery)
4) Enough work to justify it
Likely, the temps aren't ideal for 2.9GHz, and, most of the time, boosting up to 2.9 vs a slightly lower speed isn't actually going to help anything (esp in dual core work).
I assume you expect 2.6ghz turbo on your 1.2ghz rMB...
As far as I know that 2.6ghz is only for the single core turbo (if there is a task that only uses a single core, the proccesor can temporarely shut the other core down and apply all of the voltage to one core....) dual core turbo is lower (this does not only apply to the core m). Nothing is wrong with your rMB!
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The new rMB with 1.2ghz has 2.6ghz turbo, not 2.9ghz. The BTO 1.3ghz rMB has 2.9ghz.
Yup, yes, you are right, the 1.2 goes to 2.6, had it in my head this thread was about the 5Y71 1.3GHz model, sorry, yeah, 2.6 = max here.