Yeah. At least that's how it works on my DC with all the CPU functions enabled, I think it shouldn't matter if you enable them but it may, they are enabled by default but some people disable them to OC.For Skylake, page 82
Turbo Boost Technology
2.0 Power Control
Illustration of Intel
Turbo Boost Technology 2.0 power control is shown in the
following sections and figures. Multiple
controls operate simultaneously allowing
customization for multiple system thermal and power limitations. These controls allow
for turbo optimizations within system constraints and are accessible using MSR, MMIO,
or PECI interfaces.
Package Power Control
The package power control settings of PL1, PL
2, PL3, PL4 and Tau allow the designer to
Turbo Boost Technology 2.0 to ma
tch the platform power delivery and
package thermal solution limitations.
• Power Limit 1 (PL1): A threshold for average power that will not exceed -
recommend to set to equal TDP power. PL1
should not be set higher than thermal
solution cooling limits.
• Power Limit 2 (PL2): A threshold that if exceeded, the PL2 rapid power limiting
algorithms will attempt to limit the spike above PL2.
• Power Limit 3 (PL3): A threshold that if exceeded, the PL3 rapid power limiting
algorithms will attempt to limit the duty
cycle of spikes above PL3 by reactively
limiting frequency. This is an optional setting
• Power Limit 4 (PL4): A limit that will not be exceeded, the PL4 power limiting
algorithms will preemptively limit frequency to prevent spikes above PL4.
• Turbo Time Parameter (Tau): An averaging constant used for PL1 exponential
weighted moving average (EWMA) power calculation.
Implementation of Intel
Turbo Boost Technology 2.0 on
ly requires configuring PL1,
PL1 Tau and PL2.
PL3 and PL4 are disabled by default.
There is a way to click to the PDFs on ark but I had to search it again, it's kinda tricky hidden.
For my DC it goes this way and should be same for SL: PL1 long duration power limit, PL2 short duration power limit = spike = immediate limit, Tau = time after which PL1 is used when power goes over it.
SL has also PL3 and 4 I think these are new and seem to be disabled by default but you can set them if you want.Edited by JackCY - 6/7/16 at 10:52am