QLogic - The Ultimate in PerformanceQLogic QLE7340
Single-Port 40Gbps (QDR) InfiniBand to PCI Express Adapter

QLogic QLE7340 Single-Port 40Gbps (QDR) InfiniBand to PCI Express Adapter

QLogic Products
QLogic QLE 7300 Series PCI Express
QLogic QLE7340 Single-Port 40Gbps (QDR) InfiniBand to PCI Express Adapter #QLE7340-CK
List Price: $782.00
Our Price: $469.00

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High Performance Computing (HPC) solutions have used InfiniBand networks to meet the most demanding application requirements needs of the most demanding set of applications and grand challenges. The QLE7340 is a single-port 40Gbps InfiniBand PCI Express Gen2 x8 adapter. The adapters have a highly-integrated design that delivers unprecedented levels of performance, making them ideal solutions for HPC applications.

  • PCI Express Gen2 x8
  • 40/20/10Gbps auto-negotiation
  • Advanced management capabilities with InfiniBand Fabric Suite (IFS) toolset
  • Exceptionally low point-to-point latency of <1 μs that scales with the size of the fabric
  • For bandwidth-intensive applications, delivers 3400 MBps (unidirectional)
  • 30M messages/sec delivers high I/O transfers for clustering applications on four processes per node (ppn)
  • Comprehensive Linux operating system support
  • RoHS compliant

High Performance.
Quad data rate (QDR) InfiniBand delivers 40Gbps per port (4×10Gbps), providing the necessary bandwidth for high-throughput applications. With the highest message rate and lowest latency of any InfiniBand adapter, the QLE7340 provides superior HPC application performance.

Superior Scalability.
QLogic's TrueScale architecture is designed to deliver near linear scalability. As additional compute resources are added to a cluster, latency remains low and the message rate scales with the size of the fabric, resulting in maximum utilization of compute resources.

Enhanced Reliability.
The QLE7340's advanced design does not need onboard firmware or external memory, which enhances not only its performance, but also reliability. The ASIC has ECC protection on all internal SRAMs and parity checking on all internal buses. Equally important, the stateless design is inherently more resilient to adapter and fabric failures as it minimizes its reliance on the connection state. Optional data scrambling provides a mechanism to optimize data patterns, which in turn minimizes the bit-error rate.

Investment Protection.
This fourth generation product is compliant with the InfiniBand Trade Association (IBTA) version 1.2 specification, ensuring interoperability with all other IBTA compliant devices. In addition, support for the OpenFabrics community distributions ensures rapid adoption by major operating system vendors, system integrators, and independent hardware (IHV) and software (ISV) vendors.

Power Optimized.
Maximum performance is delivered at the lowest power, 5.2W typical, of any QDR-capable adapter.

Environmentally Friendly.
The QLE7340 is RoHS 6 compliant as well as antimony free and halogen free.

Features and Benefits:


  • High performance
  • Superior scalability
  • Enhanced reliability
  • Protects existing server investments
  • Lowest power and cooling requirements
  • Environmentally friendly


  • 40Gbps InfiniBand interface
  • 3400MBps unidirectional throughput
  • 30M messages processed per second (noncoalesced)
  • 1.0 microsecond latency that remains low as the fabric is scaled
  • Multiple virtual lanes (VLs) for unique quality of service (QoS) levels per lane over the same physical port
  • TrueScale™ architecture, with MSI-X interrupt handling, is optimized for multi-core compute nodes
  • Operates without external memory
  • Optional data scrambling in InfiniBand link
  • RoHS 6 compliant
  • Complies with InfiniBand Trade Association (IBTA) v1.2 standard
  • Supports OpenFabrics Alliance software distributions

Technical Specifications:

Adapter Model QLE7340 QLE7342
  QLE7340 QLE7342
Physical Specifications
Ports Single QDR 4X InfiniBand Dual QDR 4X InfiniBand
Form factor Low profile (4.83 in × 2.71in) Low profile (4.83 in × 2.71in)
Bracket size Standard: 1.84 cm × 12.08 cm (.73 in. × 4.76 in.)
Low-profile: 1.84 cm × 8.01 cm (.73 in. × 3.15 in.)
Environment and Equipment Specifications
Airflow None None
Power dissipation Typical 5.2 Watts Typical 6.2 Watts
Operating Temperature 10 to 55° C (estimated) 10 to 55° C (estimated)
Storage Temperature -40 to 70° C (estimated) -40 to 70° C (estimated)
Operating Humidity 10% to 95% (non-condensing) (estimated) 10% to 95% (non-condensing) (estimated)
Non-Operating Humidity 5% to 100% (non-condensing) (estimated) 5% to 100% (non-condensing) (estimated)
RoHS compliant RoHS 6 and green packaging (antimony free and halogen free) RoHS 6 and green packaging (antimony free and halogen free)
Host Bus Interface Specifications
Bus interface PCI Express Gen2 x8
Device type End point
Advanced interrupts
  • MSI-X
  • INTx
  • PCI Hot Plug Specification revision 1.0, PCI Bus Power Management Interface Specification revision 1.2
  • IBTA version 1.2
InfiniBand Interfaces and Specifications
Data rate 40/20/10Gbps auto-negotiation
Virtual lanes
  • Configurable for one, two, four, or eight VLs
    • 2KB MTU or
    • 4KB MTU (single InfiniBand port)
MTU All standard InfiniBand MTUs including 4KB
Interfaces Supports quad small form factor pluggable (QSFP) optical and copper cable specifications; CX4/microGigaCN specifications
Tools and Utilities
Host driver/upper level protocol (ULP) support
  • OpenFabrics Alliance
  • QLogic SRP
  • QLogic VNIC
  • Performance scaled messaging (PSM) MPI acceleration stack
  • FastFabric™ tools
MPI support MVAPICH2, MPICH2, Open MPI, QLogic MPI, HPMPI, Platform (Scali) MPI, Intel MPI
Operating systems Red Hat®; SUSE®; CentOS; Scientific Linux®
Agency Approvals
EMI and EMC FCC Part 15, Subpart B, Class A; ICES-003, Class A
Safety UL; CSA/UL 60590-1; CB Scheme: IEC 60950-1


PDF File
Download the QLogic QLE7340 Adapter Datasheet  (PDF).


QLogic Products
QLogic QLE 7300 Series PCI Express
QLogic QLE7340 Single-Port 40Gbps (QDR) InfiniBand to PCI Express Adapter #QLE7340-CK
List Price: $782.00
Our Price: $469.00