HP AB500A - Integrated Lights-Out Advanced Technology Brief page 7

Figure 3. Power savings and performance comparison of Static Low Power mode vs. Static High Performance
mode on a DL385 G5 server configured with two AMD
DL385 G5 Power Savings and Performance Impact
0 10 20 30 40 50 60 70 80 90 100
30.00%
25.00%
20.00%
15.00%
10.00%
5.00%
0.00%
Figures 4 and 5 represent the same power and performance results when Power Regulator is
configured for Dynamic Power Savings mode. In Dynamic mode, processors are kept in the lowest
(Pmin) P-state when utilization remains below 70 percent, providing the same power savings as in
Static Low Power mode. At greater than 70 percent utilization, the Dynamic Power Savings mode
begins to run the processors at the higher power level to maintain optimal system performance.
2356 2.3 GHz processors
Ultra Static Low vs. Static High
% Load
0.00%
-5.00%
-10.00%
Pwr Saved
Perf Delta
-15.00%
-20.00%
-25.00%
-30.00%
7