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C o m p e t i t i v e   b r i e f

 

Power Efficiency of QLogic 8Gb HBAs

QLogic’s 8Gb Adapters Demonstrate Highest Performance per Watt

industry Challenges

technology  advancements  such  as  multi-core  processors  and 
the  transition  to  high-density  servers  (blade  servers)  allow 
significantly more processing power in a much smaller space. 
However, these advancements have created new challenges for 
it  managers,  who  now  need  to  provide  adequate  energy  and 
cooling for the compact data center.  Going “Green” and reducing 
power consumption is critical to data centers, but not at the cost 
of reduced performance.  Host bus adapter (HbA) manufacturers 
must contribute to the solution by reducing power consumption 
and increasing the performance-to-power ratios.

QLogic 2500 Series 8Gb HBA Advantage

QLogic single and dual port HbAs require “No 

 

Airflow” 

the QLogic 2500 Series 8Gb fC HbA offers “Cool 
HbA™” technology requiring “no airflow” and “no 
heatsink”.

QLogic 8Gb adapters utilize 20 percent to 30 percent 

 

less power than emulex

QLe2560, Single port: 5.5 Watts

 

QLe2562, Dual port: 6.2 Watts 

 

QLogic 8Gb adapters provide “Dynamic power 

 

management”, saving an additional 1.3 Watts per 

HbA
QLogic 8Gb adapters provide up to 70 percent 

 

higher iopS per watt than emulex

QLogic has a 27 percent to 35 percent 

 

advantage without Dynamic power 
management

QLogic has a 66 percent to 70 percent 

 

improvement over emulex with Dynamic 
power management

QLogic 

iopS/W

emulex 
iopS/W

QLogic 

Advantage

8Gb Single port HbA

38K/W

30K/W

27%

8Gb Dual port HbA

50K/W

37K/W

35%

IOPS

1

 per Watt Without Dynamic Power Management

QLogic 

iopS/W

emulex 
iopS/W

QLogic 

Advantage

8Gb Single port HbA

50K/W

30K/W

66%

8Gb Dual port HbA

63K/W

37K/W

70%

IOPS

1

 per Watt With Dynamic Power Management

Competitive Shortfalls

emulex 8Gb HbAs (Lpe1200x product family) consume up to 

 

42 percent more power than QLogic 8Gb HbAs

Lpe12000 Single port: 6.9 Watts

 

Lpe12002 Dual port: 8.8 Watts

 

emulex single and dual port 8Gb HbAs require up to 150Lfm 

 

airflow

Higher power consumption results in higher heat generation 
and increased cooling requirements in the server ecosystem.

emulex requires a heat-sink to keep the 8Gb Lpe1200x 

 

family cool

in addition to the 150Lfm, the emulex 8Gb HbAs require a 
heat-sink to reduce the temperature and achieve the same 
reliability as QLogic 8Gb adapters.

emulex’s 8Gb HbAs have an up to 70 percent iopS 

 

performance disadvantage per watt

1  benchmarks performed with Quad-Core intel

®

 Xeon

®

, Windows Server

®

 

2003 r2, and iometer at 4Kb read/write block size

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