AMD Richland

14 AMD “RICHLAND” APU | HOT CHIPS 25 | PRAVEEN DONGARA | AUGUST 2013
CONFIGURABLE TDP (cTDP)
Activity from
Cac Monitors
Power
Calculation
Temp.
Calculation
P
calculated
Freq
V
T
calc
T
calc
<>
Max
Temp.?
Limit
P0
P1
Pboost2
...
If T
calc
< Limit  raise F,V
If T
calc
> Limit  lower F,V
New Operating F, V
T
calculated
Temp.
of other
TEs
*
Boost Scalar
Pboost0
On-die Temperature Sensor Readings
Pboost1
cTDP Scalar
System with
A10-5745M Default TDP = 25W
A10-5745M
left to operate at
default TDP of 25W
A10-5745M
cTDP value set to 20W
(typically via SBIOS)
System with
• TDP of the APU can be configured to match the
cooling capabilities of the system
• Provides system design flexibility to OEMs
The TDP & cTDP values above
• are for illustrative purposes only
• may not reflect actual product implementation