The Tyan S2895A2NRF (or S2895A2NRF-RS) is a legacy dual-socket server motherboard designed for AMD Opteron processors, first released around 2005. It is a SSI EEB form factor board (12" x 13") aimed at workstation or server applications, particularly noted for supporting NVIDIA SLI technology.

Key Features and Specifications: Processor Support: Dual Socket 940 (AMD Opteron 200 Series). Board has two Opteron 270 CPU and stock coolers included. Chipset: NVIDIA nForce Professional 2200 + 2050 + AMD8131. Memory: 8 DDR slots supporting DDR 400 (PC 3200) registered ECC memory (max 16GB). Has 2x1GB, 2x512MB installed. (3GB) Total Expansion Slots: 2 PCI Express x16 slots (full speed), 1 PCI Slot. Storage: 4 SATA 3.0Gb/s ports with RAID 0/1/0+1 support. Networking: Dual Gigabit (10/100/1000Mbps) LAN. Management: Onboard IPMI (mentioned in user forums as available, though sometimes finicky).

Common Uses: Legacy Server: Suitable for running legacy 64-bit AMD Opteron applications. Workstation: Used for dual-GPU workstation setups due to dual PCIe x16 slots. FreeBSD/Linux: Often used in vintage server builds, though some users reported challenges with modern ZFS implementations on this older hardware.

Support Considerations: Power Supply: Requires a robust power supply, preferably with strong 12V rails. Support & Documentation: As of October 1, 2024, Tyan has been integrated into the MiTAC brand, with support resources moving to mitaccomputing.com.

Replacement Parts: Currently, these boards are usually available only in the used market (e.g., eBay) NO I/O Shield Included (was damaged beyond repair by previous owner)