3770K MSRP 313$, 3770/3770S/3770T 278$I recommend just undervolting / underclocking over purchasing a factory underclocked / undervolted processors. However some users will prefer the guaranteed underclock / undervolt and will pay more for that.
I'm unsure of how Turbo mode with these chips works when underclocked/overclocked. Does Turbo still push it to the normal turbo speeds, is it disabled, or does it increase it by a specific increment above the underclocked speed?
I haven't bought a new processor to play around with in some years so haven't had a reason to look into this. I maybe be in the market soon though so I'm honestly curious. I suppose I could google around.
3770T for example has normal clocks of 2.5Ghz and a maximum Turbo of 3.7Ghz.
If needed, the processor will operate at a higher clockspeed depending on four factors that I have included on the bottom of this post.
*snip*
But atleast with 2500K/2600K it was:
3.3/3.4Ghz base speed
four cores loaded -> +1bin over base aka 3.4/3.5Ghz
three cores loaded->+2bins over base aka 3.5/3.6Ghz
two cores loaded->+3bins over base aka 3.6/3.7Ghz
one core loaded->+4bins over base aka 3.7/3.8Ghz
You can read more here.
http://www.intel.com/content/www/us/en/architecture-and-technology/turbo-boost/turbo-boost-technology.html
http://en.wikipedia.org/wiki/Intel_Turbo_Boost
Code:
"Intel Turbo Boost Technology 2.0 is activated when the Operating System
(OS) requests the highest processor performance state (P0).
The maximum frequency of Intel Turbo Boost Technology 2.0 is dependent on the
number of active cores. The amount of time the processor spends in the Intel Turbo
Boost Technology 2.0 state depends on the workload and operating environment.
Any of the following can set the upper limit of Intel Turbo Boost Technology 2.0 on a given workload:
*Number of active cores
*Estimated current consumption
*Estimated power consumption
*Processor temperature
^When the processor is operating below these limits and the user's workload demands
additional performance, the processor frequency will dynamically increase until the upper
limit of frequency is reached. Intel Turbo Boost Technology 2.0 has multiple algorithms
operating in parallel to manage current, power, and temperature to maximize
performance and energy efficiency. Note: Intel Turbo Boost Technology 2.0 allows
the processor to operate at a power level that is higher than its rated upper power limit
(TDP) for short durations to maximize performance."
E:
Well I found an older review of 2500T (only I could find with turbo states actually told..) and the Turbo works like this on the 2500T
![table3.png](http://www.xbitlabs.com/images/cpu/core-i5-2500t-2390t-i3-2100t-pentium-g620t/table3.png)
So with the 3770T it would work something like this (just guessing)
1-2 threads loaded 3.7
3-4 threads loaded 3.5-3.6
5-6 threads loaded 3.0-3.1
7-8 threads loaded 2.6-2.7Ghz
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