Техническая Спецификация для Intel i5-4200H CL8064701470601

graphics memory. Intel RMPM functionality depends on graphics/display state

(relevant only when processor graphics is being used), as well as memory traffic

patterns generated by other connected I/O devices.

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

graphics render engine during times of idleness. RC6 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, the processor graphics will program the graphics render engine

internal power rail into a low voltage state.

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. Intel 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.

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

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

guaranteed 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. The graphics driver will always try to place the

graphics engine in the most energy efficient P-state.

The Intel DPST technique achieves backlight power savings while maintaining a good

visual experience. This is accomplished by adaptively enhancing the displayed image

while decreasing the backlight brightness simultaneously. The goal of this technique is

to provide equivalent end-user-perceived image quality at a decreased backlight

power level.
1. The original (input) image produced by the operating system or application is

analyzed by the Intel DPST subsystem. An interrupt to Intel DPST software is

generated whenever a meaningful change in the image attributes is detected. (A

Mobile 4th Generation Intel

®

 Core

™

 Processor Family, Mobile Intel

®

 Pentium

®

 Processor Family, and Mobile Intel

®

 Celeron

®

Processor Family

July 2014

Datasheet – Volume 1 of 2

Order No.: 328901-007

67