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Chelsio T520-CR dual-port 10Gbps network card with two SFP+ cages, PCIe 3.0 x8 gold-finger edge, low-profile metal bracket

Chelsio Communications

Chelsio Communications T520-CR 10Gbps dual-port network card

SKU CH-R04Z-565RF MPN T520-CR

Dual-port 10Gbps SFP+ adapter with PCIe 3.0 x8 offload for storage, virtualisation and HPC workloads

  • Speed10Gbps
  • InterfacePCI-Express
  • FeaturesProduct Type:10Gigabit Ethernet Card Number of Total Expansi
  • Dual 10 Gbps ports consolidate LAN and SAN traffic
  • PCI Express 3.0 x8 host interface delivers high throughput
  • Full TCP, UDP, iSCSI, FCoE, iWARP RDMA and NAT offload reduces CPU load
  • Hardware-based firewall and traffic filtering secure cloud deployments
  • Optimized for storage, virtualization and HPC workloads

Dual-port 10Gbps adapter for data centres

The Chelsio T520-CR is a dual-port 10Gbps network card built for storage, virtualisation and HPC workloads. It plugs into a PCI Express 3.0 x8 slot and offloads full TCP, UDP, iSCSI, FCoE and iWARP RDMA processing from the host CPU. Hardware-based firewall, traffic filtering and SR-IOV support are integrated on the adapter.

Practical limits of the PCI Express 3.0 x8 interface

The card requires a PCIe 3.0 x8 connection to deliver its rated 10Gbps throughput on both SFP+ ports simultaneously. A narrower or older slot will reduce available bandwidth and may prevent the adapter from reaching line rate. The two SFP+ cages accept compatible transceivers or direct-attach cables, which are not included with the card.

What to verify before ordering

Confirm that your server or workstation has a free PCIe 3.0 x8 slot with enough physical clearance for a dual-slot bracket. Check that your operating system or hypervisor includes driver support for the T520-CR and that you have suitable SFP+ modules or cables for the intended link distance. Buyers who need more than two 10Gbps ports or a different host interface should consider other models.

Highlights

  • Dual 10 Gbps ports consolidate LAN and SAN traffic
  • PCI Express 3.0 x8 host interface delivers high throughput
  • Full TCP, UDP, iSCSI, FCoE, iWARP RDMA and NAT offload reduces CPU load
  • Hardware-based firewall and traffic filtering secure cloud deployments
  • Optimized for storage, virtualization and HPC workloads

Specifications

BrandChelsio
ModelT520-CR
Speed10Gbps
InterfacePCI-Express
FeaturesProduct Type:10Gigabit Ethernet Card
Number of Total Expansion Slots:2
Number of SFP+ Slots:2
Shipping weight0.91 kg
Package size254 × 165 × 57 mm

Questions about this item

Should I choose the T520-CR or a single-port version for my server?

The T520-CR provides two SFP+ ports on one PCIe 3.0 x8 card, letting you run redundant links or separate networks without using a second slot.

What does the 10Gbps rating deliver in a live system?

Each port supports up to 10 Gbps line rate with full TCP, UDP, iSCSI, FCoE and iWARP offload, keeping CPU usage low while sustaining high throughput.

How does the PCIe 3.0 x8 interface limit real-world speed?

The x8 Gen 3 link supplies enough bandwidth for both 10 Gbps ports at full duplex, so the bus does not become a bottleneck.

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