4.3.2.4DRAM I/O Power Management

Power Management—Processor

assertion with all pages closed). Pre-charge power-down provides greater power savings, but has a bigger performance impact since all pages will first be closed before putting the devices in power-down mode.

If dynamic power-down is enabled, all ranks are powered up before doing a refresh cycle and all ranks are powered down at the end of refresh.

4.3.2.4DRAM I/O Power Management

Unused signals should be disabled to save power and reduce electromagnetic interference. This includes all signals associated with an unused memory channel. Clocks, CKE, ODE, and CS signals are controlled per DIMM rank and will be powered down for unused ranks.

The I/O buffer for an unused signal should be tri-stated (output driver disabled), the input receiver (differential sense-amp) should be disabled, and any DLL circuitry related ONLY to unused signals should be disabled. The input path must be gated to prevent spurious results due to noise on the unused signals (typically handled automatically when input receiver is disabled).

4.3.3DRAM Running Average Power Limitation (RAPL)

RAPL is a power and time constant pair. DRAM RAPL defines an average power constraint for the DRAM domain. Constraint is controlled by the PCU. Platform entities (PECI or in-band power driver) can specify a power limit for the DRAM domain. PCU continuously monitors the extant of DRAM throttling due to the power limit and rebudgets the limit between DIMMs.

4.3.4DDR Electrical Power Gating (EPG)

The DDR I/O of the processor supports Electrical Power Gating (DDR-EPG) while the processor is at C3 or deeper power state.

In C3 or deeper power state, the processor internally gates VDDQ for the majority of the logic to reduce idle power while keeping all critical DDR pins such as SM_DRAMRST#, CKE and VREF in the appropriate state.

In C7, the processor internally gates VCCIO_TERM for all non-critical state to reduce idle power.

In S3 or C-state transitions, the DDR does not go through training mode and will restore the previous training information.

4.4PCI Express* Power Management

•Active power management is supported using L0s, and L1 states.

•All inputs and outputs disabled in L2/L3 Ready state.

4.5Direct Media Interface (DMI) Power Management

Active power management is supported using L0s/L1 state.

Desktop 4th Generation Intel® Core™ Processor Family, Desktop Intel® Pentium® Processor Family, and Desktop Intel® Celeron® Processor Family

December 2013

Datasheet – Volume 1 of 2

Order No.: 328897-004

63

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Intel BX80646I34130 PCI Express* Power Management, Direct Media Interface DMI Power Management, DRAM I/O Power Management
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BX80633I74960X, BX80646I34130, BX80646I54430, BX80646I74770K, BX80646I74770 specifications

The Intel CM8063701159502, or BX80637I53470, is a powerful CPU designed for modern computing needs. This processor belongs to Intel's 4th generation of Core i5 processors, commonly known as "Haswell". It showcases Intel's commitment to enhancing performance, increasing energy efficiency, and delivering an enriching user experience.

One of the main features of the Intel Core i5-3470 is its quad-core architecture. This allows the processor to handle multiple threads simultaneously, making it adept at multitasking and running demanding applications efficiently. With a base clock speed of 3.2 GHz, it can boost up to 3.6 GHz using Intel’s Turbo Boost technology, providing additional power when needed for intensive tasks like gaming or video editing.

The Intel i5-3470 features Intel's HD Graphics 2500, which offers decent graphics performance for everyday tasks and casual gaming. This integrated graphics solution is capable of delivering high-definition visuals and supports DirectX 11, making it suitable for lightweight gaming experiences without the need for an additional dedicated graphics card.

Another standout characteristic of the BX80637I53470 is its support for Intel Smart Cache, which is an advanced caching technology. It provides a shared cache pool that enhances performance by reducing the time it takes to access frequently used data. This feature, coupled with Intel's instruction set architecture, allows for improved processing agility and efficiency across applications.

The processor is built on a 22nm manufacturing process, which results in reduced power consumption and heat generation compared to its predecessors. It has a thermal design power (TDP) of 77 watts, making it energy efficient while still delivering robust performance. Additionally, the Core i5-3470 supports DDR3 memory, with speeds up to 1600 MHz, enabling quick data retrieval and improved system responsiveness.

Security is another important aspect of the Intel i5-3470, featuring Intel Secure Key and Intel AES New Instructions (AES-NI), which protect sensitive data and enhance encryption performance.

In conclusion, the Intel CM8063701159502, or BX80637I53470, encapsulates modern computing technology with its powerful quad-core performance, integrated graphics, energy efficiency, and robust security features, making it a versatile choice for a wide range of computing tasks. Whether users are engaging in casual gaming, productivity tasks, or multimedia consumption, this processor demonstrates a solid balance of performance and efficiency, providing an excellent computing experience overall.
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