AMD OSP265FAA6CB Dual-Core Server Processor

Overview

The AMD OSP265FAA6CB is an Opteron 265 server processor built on AMD's "Italy" core (stepping E6) using 90nm manufacturing technology. It's a dual-core, dual-thread Socket 940 CPU clocked at 1.80 GHz with 2 MB of L2 cache — a specific-generation part for engineers maintaining or rebuilding legacy dual-socket servers rather than a processor for new deployments. If a piece of your fleet still runs Socket 940 boards, the OSP265FAA6CB is the kind of exact-match part that keeps a working system running instead of forcing a full platform replacement.

Key Features

• Dual-Core, Dual-Thread Design: Two physical cores handling two threads gives this chip real parallel processing over a single-core Opteron of the same era — useful for multi-threaded server workloads running on older dual-socket boards.
• 1.80 GHz Clock Speed: Matches the exact clock target legacy BIOS and firmware on Socket 940 platforms were validated against, which matters when you're replacing a failed CPU and need the replacement to behave identically to the part it's replacing.
• 2 MB L2 Cache: Larger on-die cache reduces trips to main memory on repetitive server workloads, which was a meaningful performance lever for this processor generation.
• 90nm "Italy" Core (Stepping E6): A specific silicon revision — if you're matching CPUs across a multi-socket board, stepping consistency avoids the microcode and stability mismatches that can come from mixing steppings.
• Socket 940 Compatibility: Drops into existing Socket 940 server boards without a motherboard swap — the point of sourcing this exact part number instead of a newer, physically incompatible Opteron.
• 95 Watt Thermal Power: Defines the cooling and power budget your existing server chassis and heatsink need to handle; this figure lines up with the thermal envelope Socket 940 boards and coolers of this era were designed around.
• OEM Condition: Sourced as a bare OEM processor rather than a boxed retail unit — the standard sourcing path for parts supporting older, discontinued platforms.
• 2.00 lbs Shipping Weight: A useful number for freight planning when this part ships alongside other server components.

Integration & Compatibility

The OSP265FAA6CB is a Socket 940 part in the Opteron 200 series (Core Model 265), meaning it targets dual-socket server boards from that platform generation. Confirm your motherboard's supported CPU list and current BIOS revision before installing — Socket 940 boards from different vendors had varying support windows across Opteron steppings, and this is standard practice whenever you're populating or replacing a processor in an existing multi-socket chassis. Pair it with a heatsink rated for a 95W thermal load and Socket 940 registered ECC memory matched to your board's supported speed and ranks. This part is best suited to sustaining an existing Opteron-based server rather than as a foundation for a new build — for new server deployments, a current-generation platform will offer far better performance per watt.

Frequently Asked Questions

Q: What socket does the OSP265FAA6CB use?

A: Socket 940. Confirm your motherboard's supported CPU list before ordering, since Socket 940 boards vary in which Opteron steppings they support.

Q: Is the OSP265FAA6CB a single-core or dual-core processor?

A: Dual-core with 2 threads (one thread per core), running at 1.80 GHz with 2 MB of L2 cache.

Q: What is the thermal power (TDP) of the OSP265FAA6CB?

A: 95 Watts. Make sure your chassis cooling and heatsink are rated to handle this thermal load.

Q: What condition is the OSP265FAA6CB sold in?

A: Factory-new OEM condition.

Q: What warranty comes with the OSP265FAA6CB?

A: A 21-day warranty applies to this unit.

Q: How much does the OSP265FAA6CB weigh for shipping purposes?

A: 2.00 lbs.

Eden Phillips

The OSP265FAA6CB is a part I see requested specifically when a dual-socket Socket 940 server is still in production and one CPU has failed or a second socket needs populating. This isn't a processor you spec into a new build — it's a sustainment part.

Technical Highlights:

• 1.80 GHz / 2-core / 2-thread: The Opteron 265 gave dual-socket boards of this generation real multi-threaded headroom over single-core Opterons — worth confirming your workload actually benefits before paying a premium over a single-core replacement.
• 2 MB L2 Cache: Larger cache than lower-numbered Opteron 200-series parts, which helps on cache-sensitive server workloads common on legacy database and file server roles.
• 95W TDP: Matches the thermal envelope Socket 940 heatsinks and chassis airflow of this era were engineered for — no cooling surprises when swapping in as a like-for-like replacement.

Deployment Considerations:

• Verify stepping compatibility (this unit is stepping E6, "Italy" core) against your board's supported CPU list — dual-socket boards can be picky about mixing steppings across two populated sockets.
• The 21-day warranty window is short by design for a legacy OEM part — test the CPU in your target board immediately after install rather than letting it sit in inventory.

Best fit: keeping an existing Socket 940 dual-Opteron server alive for another maintenance cycle — not a candidate for a performance-driven refresh.