Intel Core 2 Quad Q9505 AT80580PJ0736MG Manual Do Utilizador
Códigos do produto
AT80580PJ0736MG
Datasheet
19
Low Power Features
2.4.1
Dual Intel Dynamic Acceleration
The processor supports Dual Intel Dynamic Acceleration. For any two cores in the
quad-core processor, the Dual Intel Dynamic Acceleration feature allows one core to
operate at a higher frequency point while the other core is inactive and the operating
system requests increased performance. Thus, quad-core processor could enter Dual
Intel Dynamic Acceleration when two cores are idle and the other two are active. This
higher frequency is called the opportunistic frequency and the maximum rated
operating frequency is the ensured frequency.
Dual Intel Dynamic Acceleration enabling requires exposure, via BIOS, of the
opportunistic frequency as the highest ACPI P state
2.5
Processor Power Status Indicator (PSI-2) Signal
The processor incorporates the PSI# signal that is asserted when the processor is in a
reduced power consumption state. PSI# can be used to improve intermediate and light
load efficiency of the voltage regulator, resulting in platform power savings and
extended battery life. The algorithm that the processor uses for determining when to
assert PSI# is different from the algorithm used in previous mobile processors.
PSI-2 functionality improves overall voltage regulator efficiency over a wide power
range based on the C-state and P-state of the four cores. The combined C-state of all
cores are used to dynamically predict processor power. The PSI-2 functionality logic
diagram is shown in
§
Figure 3.
PSI-2 Functionality Logic Diagram