Data Sheet

ManualsBrandsIntel ManualsCPU ProcessorsCore i7-9700KF 3.6 GHz Eight-Core LGA 1151 Processor

Power Management

78 Datasheet, Volume 1 of 2

InstantGo

InstantGo is a platform state. On display time out the OS requests the processor to

enter package C10 and platform devices at RTD3 (or disabled) in order to attain low

power in idle.

Dynamic LLC Sizing

When all processor IA cores request C7 or deeper C-state, internal heuristics

dynamically flushes the LLC. Once the processor IA cores enter a deep C-state,

depending on their MWAIT sub-state request, the LLC is either gradually flushed N-

ways at a time or flushed all at once. Upon the processor IA cores exiting to C0 state,

the LLC is gradually expanded based on internal heuristics.

4.2.6 Package C-States and Display Resolutions

The integrated graphics engine has the frame buffer located in system memory. When

the display is updated, the graphics engine fetches display data from system memory.

Different screen resolutions and refresh rates have different memory latency

requirements. These requirements may limit the deepest Package C-state the

processor can enter. Other elements that may affect the deepest Package C-state

available are the following:

• Display is on or off

• Single or multiple displays

• Native or non-native resolution

• Panel Self Refresh (PSR) technology

Note: Display resolution is not the only factor influencing the deepest Package C-state the

processor can get into. Device latencies, interrupt response latencies, and core C-states

are among other factors that influence the final package C-state the processor can

enter.

The following table lists display resolutions and deepest available package C-State.The

display resolutions are examples using common values for blanking and pixel rate.

Actual results will vary. The table shows the deepest possible Package C-state.System

workload, system idle, and AC or DC power also affect the deepest possible Package C-

state.

Table 4-7. Deepest Package C-State Available

U Processor Line

1,2

H Processor Line

1,2

S Processor Line

1,2,3

PSR Enabled PSR Disabled PSR Enabled

PSR Disabled PSR Enabled PSR Disabled

PC10 PC8 PC10 PC8 PC10 PC8

Notes:

1. All Deep states are with Display ON.

2. The deepest package C-state dependents on various factors, including Platform devices, HW configuration

and peripheral software.

3. S-Processor Line supporting PC10 only when paired with Intel

300 Series Chipset Families Platform

Controller Hub.

4. All are referring to 800x600, 1024x768, 1280x1024, 1920x1080, 1920x1200, 1920x1440, 2048x1536,

2560x1600, 2560x1920, 2880x1620, 2880x1800, 3200x1800, 3200x2000, 3840x2160 and 4096x2160

resolutions, up to 60 Hz.