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high temperature in AMD based laptop

hi, one of my laptop have AMD RAEDON

$lspci|grep VGA
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7640G]

it continiously shows high temperature even when very little job is running. for example, the load :

top - 21:57:30 up  1:16,  2 users,  load average: 0.76, 0.89, 0.77
Tasks: 165 total,   1 running, 164 sleeping,   0 stopped,   0 zombie
%Cpu(s):  5.8 us,  4.5 sy,  0.0 ni, 88.7 id,  0.2 wa,  0.6 hi,  0.2 si,  0.0 st
KiB Mem:   7558420 total,  2099340 used,  5459080 free,    63428 buffers

yields temperature:

$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +74.0°C  (crit = +255.0°C)

radeon-pci-0008
Adapter: PCI adapter
temp1:        +70.0°C  

k10temp-pci-00c3
Adapter: PCI adapter
temp1:        +74.4°C  (high = +70.0°C)
                       (crit = +100.0°C, hyst = +99.0°C)

is there any wayout? in my main laptop with hybrid graphics (intel+nvidia), this problem was solved by bumblebee. what is the alternative for AMD?

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high temperature in AMD based laptop

hi, one of my laptop have AMD RAEDON

$lspci|grep VGA
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7640G]

it continiously shows high temperature even when very little job is running. for example, the load :

top - 21:57:30 up  1:16,  2 users,  load average: 0.76, 0.89, 0.77
Tasks: 165 total,   1 running, 164 sleeping,   0 stopped,   0 zombie
%Cpu(s):  5.8 us,  4.5 sy,  0.0 ni, 88.7 id,  0.2 wa,  0.6 hi,  0.2 si,  0.0 st
KiB Mem:   7558420 total,  2099340 used,  5459080 free,    63428 buffers

yields temperature:

$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +74.0°C  (crit = +255.0°C)

radeon-pci-0008
Adapter: PCI adapter
temp1:        +70.0°C  

k10temp-pci-00c3
Adapter: PCI adapter
temp1:        +74.4°C  (high = +70.0°C)
                       (crit = +100.0°C, hyst = +99.0°C)

is there any wayout? in my main laptop with hybrid graphics (intel+nvidia), this problem was solved by bumblebee. what is the alternative for AMD?