Better Power & Thermal Management For AM2+ Stars CPUs

AMD plans to implement better power and thermal management with Cities and Stars processors to improve energy efficiency especially when the new Energy Star 4.0 Specification takes effect on July 20, 2007. AMD will enhance C’n’Q with C1E by allowing the CPU to tri-state its IO during system idle and this allows power savings up to 18.3% during idle mode. Chipsets and BIOS are being validated for C1E support right now and so far ATi SB450 and SB600 chipsets are already validated for C1E. The Stars processors (Agena, Kuma, Rana, Spica) based on Socket AM2+ supports dual voltage plane to allow control of CPU and NB voltages independently so CPU and NB clocks can be altered accordingly to usage. Thermal management for Stars cores is enhanced further with the support for SB-TSI, a digital temperature interface for more accurate, multiple -sense points. Also the AM2+ processors support Hardware Thermal Control (HTC) that make use of the same digital on-die temperature monitor and throttles the cpu when it reaches critical temperature.


AMD plans to implement better power and thermal management with Cities and Stars processors to improve energy efficiency especially when the new Energy Star 4.0 Specification takes effect on July 20, 2007. AMD will enhance C’n’Q with C1E by allowing the CPU to tri-state its IO during system idle and this allows power savings up to 18.3% during idle mode. Chipsets and BIOS are being validated for C1E support right now and so far ATi SB450 and SB600 chipsets are already validated for C1E. The Stars processors (Agena, Kuma, Rana, Spica) based on Socket AM2+ supports dual voltage plane to allow control of CPU and NB voltages independently so CPU and NB clocks can be altered accordingly to usage. Thermal management for Stars cores is enhanced further with the support for SB-TSI, a digital temperature interface for more accurate, multiple -sense points. Also the AM2+ processors support Hardware Thermal Control (HTC) that make use of the same digital on-die temperature monitor and throttles the cpu when it reaches critical temperature.

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