Processor Specification For Operation Where Digital Thermal Sensor Exceeds Tcontrol; Processor Series - Intel Core i7-800 Specifications

Thermal Specifications
6.1.2 Processor Specification for Operation Where Digital
Thermal Sensor Exceeds T
When the DTS value is less than T
the speed of the thermal solution fan. This remains the same as with the previous
guidance for fan speed control.
During operation, when the DTS value is greater than T
algorithm must drive the fan speed to meet or exceed the target thermal solution
performance (Ψ
processor series (95 W). To get the full acoustic benefit of the DTS specification,
ambient temperature monitoring is necessary. See
characterizing the fan speed to Ψ
Table 6-3. Thermal Solution Performance above T
and i5-700 Desktop Processor Series
Notes:
1. The ambient temperature is measured at the inlet to the processor thermal solution.
2. This column can be expressed as a function of T
Ψ = 0.29 + (45.1 - T
CA
3. This column can be expressed as a function of T
Ψ = 0.29 + (45.1 - T
CA
Thermal/Mechanical Specifications and Design Guidelines
) shown in Table 6-3
CA
CA
T 1
AMBIENT
45.1
44.0
43.0
42.0
41.0
40.0
39.0
38.0
37.0
36.0
35.0
34.0
33.0
32.0
31.0
30.0
29.0
28.0
27.0
26.0
25.0
24.0
23.0
22.0
21.0
20.0
) x 0.0181
AMBIENT
) x 0.0105
AMBIENT
CONTROL
, the fan speed control algorithm can reduce
CONTROL
CONTROL
for the Intel Core™ i7-800 and i5-700 desktop
Chapter 7
and ambient temperature measurement.
for the Intel
CONTROL
Ψ at
CA
DTS = T 2
CONTROL
0.290
0.310
0.328
0.346
0.364
0.383
0.401
0.419
0.437
0.455
0.473
0.491
0.510
0.528
0.546
0.564
0.582
0.600
0.618
0.637
0.655
0.673
0.691
0.709
0.727
0.746
by the following equation:
AMBIENT
by the following equation:
AMBIENT
, the fan speed control
for details on
®
Core™ i7-800
Ψ at
CA
DTS = -1 3
0.290
0.301
0.312
0.322
0.333
0.343
0.354
0.364
0.375
0.385
0.396
0.406
0.417
0.427
0.438
0.448
0.459
0.469
0.480
0.491
0.501
0.512
0.522
0.533
0.543
0.554
39