Dell POWEREDGE M915 - Manual (Page 13)

Power Efficiency Comparison of the Dell PowerEdge M915 and HP ProLiant BL680c G7 Blade Solutions
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SPECpower_ssj2008 includes a measurement of power while the servers are at 100% target utilization. The Dell
blade solution has twice as many servers as the HP solution, but as Figure 4 shows, the Dell solution consumes
just 14% more power
6 at full utilization.
Figure 4: Blade Solution Power Consumption at 100% Target Load
6
The 8-node M915 consumed just 4,573 W at 100% target utilization, compared to 4,020 W for the 4-node BL680c G7. The 8-node M915
achieved 14,982,232 ssj_ops@100% target load and a SPECpower_ssj2008 result of 2,425 overall ssj_ops/Watt, compared to the 4-node
BL680c G7 with 7,996,829 ssj_ops@100% target load and a SPECpower_ssj2008 result of 1,260 overall ssj_ops/Watt.
4,573
4,020
0
1,000
2,000
3,000
4,000
5,000
6,000
SPECpower_ssj2008
(power draw @ 100% target load, lower is better)
Watts
Blade Solution Power Consumption
at 100% Target Load
8 x Dell PowerEdge M915 4 x HP ProLiant BL680c G7
Despite providing twice as many servers and three
times as many physical processor cores, the Dell
blade solution consumes just 14% more power at
100% utilization than the HP blade solution.