Skip to main content

Chelsio High Performance, Low Profile, Dual Port 1/10/25GbE Server Offload Adapter

Part #: 1-1538916

Chelsio High Performance, Low Profile, Dual Port 1/10/25GbE Server Offload Adapter

Part #: 1-1538916 MFG Part #: T6225-SO-CR UPC #: 897709002813
$796.00 $446.09
Save $349.91
OUT OF STOCK

0 Available

(as of Jun 19, 2026 2:30 AM) Refresh Inventory
FREE SHIPPING

Free shipping on most items when you spend $100

AUTHORIZED DEALER
AUTHORIZED DEALER
AUTHORIZED DEALER

AUTHORIZED DEALER

Protect your investment ()

About the Chelsio T6225-SO-CR

Chelsio's T6225-SO-CR is a dual port 1/10/25Gb Ethernet Server offload Adapter, with a PCI Express 3.0 x8 host bus interface, optimized for storage, cloud computing, HPC, virtualization and other datacenter networking applications.

T6225-SO-CR runs all the host software of its predecessor, T5, as-is, thus enabling leveraging of all the prior software investment. It offers all the features of T5, and in addition adds support for integrated offload of IPsec, TLS/SSL, DTLS and SMB 3.X crypto.

This adapter, based on the sixth-generation (T6), memory free technology from Chelsio, provides the highest performance and efficiency, dramatically lowers host-system CPU communications overhead and frees up host CPU cycles for useful applications. As a result, the system benefits from higher bandwidth, lower latency and reduced power consumption.

Chelsio memory free variant of the adapters doesn't have any external memory on adapter and can offload a limited number of TOE, iSCSI and iWARP connections. Once offloaded connections limit is reached, the adapter falls back to host compute cycles without disturbing the network traffic. All other features and functionalities are supported transparently by T6225-SO-CR, similar to adapters with external memory on them. All variants of Chelsio adapters leverage single software stack (drivers/firmware/management tools) and support all protocols concurrently.

A large portion of offloads enabled by T6225-SO-CR are based on standard TCP, IP, UDP protocols (such as iSCSI and iWARP), and thus can operate with a software peer, or be replaced with a software solution at lower performance, thus providing the requisite reliability for enterprise customers, and allowing incremental installs in the datacenter. It will work with any legacy switch infrastructure and does not rely on new features such as DCB, PFC, ETS, etc.

Chelsio's T6225-SO-CR is a dual port 1/10/25Gb Ethernet Server offload Adapter, with a PCI Express 3.0 x8 host bus interface, optimized for storage, cloud computing, HPC, virtualization and other datacenter networking applications.

T6225-SO-CR runs all the host software of its predecessor, T5, as-is, thus enabling leveraging of all the prior software investment. It offers all the features of T5, and in addition adds support for integrated offload of IPsec, TLS/SSL, DTLS and SMB 3.X crypto.

This adapter, based on the sixth-generation (T6), memory free technology from Chelsio, provides the highest performance and efficiency, dramatically lowers host-system CPU communications overhead and frees up host CPU cycles for useful applications. As a result, the system benefits from higher bandwidth, lower latency and reduced power consumption.

Chelsio memory free variant of the adapters doesn't have any external memory on adapter and can offload a limited number of TOE, iSCSI and iWARP connections. Once offloaded connections limit is reached, the adapter falls back to host compute cycles without disturbing the network traffic. All other features and functionalities are supported transparently by T6225-SO-CR, similar to adapters with external memory on them. All variants of Chelsio adapters leverage single software stack (drivers/firmware/management tools) and support all protocols concurrently.

A large portion of offloads enabled by T6225-SO-CR are based on standard TCP, IP, UDP protocols (such as iSCSI and iWARP), and thus can operate with a software peer, or be replaced with a software solution at lower performance, thus providing the requisite reliability for enterprise customers, and allowing incremental installs in the datacenter. It will work with any legacy switch infrastructure and does not rely on new features such as DCB, PFC, ETS, etc.

Technical Specifications of the Chelsio T6225-SO-CR

General Information


Manufacturer Chelsio Communications
Manufacturer Part Number T6225-SO-CR
Manufacturer Website Address http://www.chelsio.com
Brand Name Chelsio
Product Model T6225-SO-CR
Product Name T6 Dual Port 10G/25GbE Adapter
Packaged Quantity 1
Product Type 25Gigabit Ethernet Card

Interfaces/Ports


Host Interface PCI Express 3.0 x8
Total Number of Ports 2

I/O Expansions


Expansion Slot Type SFP28

Media & Performance


Media Type Supported Optical Fiber

Network & Communication


Network Technology 25GBase-SR25GBase-LR

Physical Characteristics


Form Factor Plug-in Card
Height 2.7"
Length 6.6"

Miscellaneous


Device Supported Server
Green Compliant Yes
Country of Origin Malaysia

Ratings and Reviews

Do you own the Chelsio T6225-SO-CR?
Be the first to write a review!
Displaying 1-10 of 70
Page size: