Dell POWEREDGE M915 - Manual (Page 7)

Power Efficiency Comparison of the Dell PowerEdge M915 and HP ProLiant BL680c G7 Blade Solutions
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Price
 Priced as configured, the Dell PowerEdge solution, including 8 M915 blades and the M1000e Blade
Chassis, costs 21% less overall than the HP ProLiant solution which includes 4 BL680c G7 blades and
the BladeSystem C7000 enclosure.
 The Dell solution’s lower cost and greater power efficiency lead to a 59% better price / performance /
watt ratio.
Rack Density
 The Dell solution provides 8 servers per 10U chassis, compared to the HP solution which provides
only 4 servers per 10U chassis.
Test methodology and detailed results are documented in this paper.
The comparison presented here is based on the respective enterprise-class servers configured as similarly as
possible and currently shipping by Dell and HP. Results based on SPECpower_ssj2008 performance testing by
Dell Labs in June 2011. For the latest SPECpower_ssj2008 benchmark results, visit
http://www.spec.org/power_ssj2008/results/power_ssj2008.html . For latest SPECjbb2005 benchmark results,
visit http://www.spec.org/osg/jbb2005 .