AMD Richland

11 AMD “RICHLAND” APU | HOT CHIPS 25 | PRAVEEN DONGARA | AUGUST 2013
"RICHLAND" ENHANCEMENTS TO AMD TURBO CORE TECHNOLOGY
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
cTDP Scalar
IB widget
Pstate limit
Pboost1
Pboost0
Add’l boost state
CONFIGURABLE TDP (cTDP)
• Designed to provide system design flexibility to OEMs
• Designed to provide flexibility to processors to fit well in platforms
that have thermal solutions designed for higher or lower TDP than
nominal
Intelligent Boost (IB)
Designed to ensure that the power budgets allocated to CPU and
GPU entities are based on whether the individual entities can
efficiently translate the power (and corresponding frequency) to higher
performance
ADDITIONAL BOOST STATE
• Designed to enable the core to improve the power
manager’s ability to settle on the optimal operating point
and deliver the right performance for each workload
On-die Temperature Sensor Readings
Temperature-smart AMD Turbo CORE
• Designed to enable achievement of repeatable higher performance
for typical operating conditions
• Designed to supplement the previous AMD generation’s power-
driven temperature calculations with on-die temperature sensors