Intel CW8064701487007 Datasheet download pdf (Page 66)

Power Management

66 Datasheet, Volume 1

4.6.3 Graphics Render C-State

Render C-State (RC6) is a technique designed to optimize the average power to the

graphics render engine during times of idleness of the render engine. Render C-state is

entered when the graphics render engine, blitter engine and the video engine have no

workload being currently worked on and no outstanding graphics memory transactions.

When the idleness condition is met, then the Integrated Graphics will program the VR

into a low voltage state (~0 V) through the SVID bus.

Caution: Long term reliability cannot be assured unless all the Low Power Idle States are

enabled.

4.6.4 Intel

Smart 2D Display Technology (Intel

S2DDT)

Intel S2DDT reduces display refresh memory traffic by reducing memory reads

required for display refresh. Power consumption is reduced by less accesses to the IMC.

S2DDT is only enabled in single pipe mode.

Intel S2DDT is most effective with:

• Display images well suited to compression, such as text windows, slide shows, and

so on. Poor examples are 3D games.

• Static screens such as screens with significant portions of the background showing

2D applications, processor benchmarks, and so on, or conditions when the

processor is idle. Poor examples are full-screen 3D games and benchmarks that flip

the display image at or near display refresh rates.

4.6.5 Intel

Graphics Dynamic Frequency

Intel Graphics Dynamic Frequency Technology is the ability of the processor and

graphics cores to opportunistically increase frequency and/or voltage above the

ensured processor and graphics frequency for the given part. Intel Graphics Dynamic

Frequency Technology is a performance feature that makes use of unused package

power and thermals to increase application performance. The increase in frequency is

determined by how much power and thermal budget is available in the package, and

the application demand for additional processor or graphics performance. The

processor core control is maintained by an embedded controller. The graphics driver

dynamically adjusts between P-States to maintain optimal performance, power, and

thermals.

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Intel CW8064701487007 Datasheet Page 66