AMD OSA8218CYWOF Dual Core Opteron 8218 Server Processor

The AMD OSA8218CYWOF is a dual-core Opteron 8218 processor built on the 940-pin Organic Micro PGA package — a legacy socket-compatible part for maintaining or expanding existing multi-socket Opteron 8000-series server platforms where board-level compatibility matters more than raw throughput. This variant ships without a fan, so plan your own cooling solution around the existing chassis heat sink and airflow design already validated for this socket.

Key Features

• 940-Pin Organic Micro PGA, 1.27mm pitch: matches the existing 8000-series socket footprint, so OSA8218CYWOF drops into qualified multi-socket boards without a platform redesign.
• Dual-core architecture with 64-KB L1 data and 64-KB L1 instruction cache per core: keeps frequently used instructions and data close to the execution units, reducing memory-fetch latency on per-core workloads.
• 1-MB L2 cache: shared working set headroom that cuts down trips to main memory on multi-threaded server tasks.
• Three HyperTransport links at 2000 MT/s, 4.0 GB/s bandwidth: supports glueless multi-socket scaling — the interconnect bandwidth that matters when you're running 4-socket or 8-socket configurations off this part.
• 144-bit DDR SDRAM memory controller at 200 MHz: the 144-bit width includes ECC lanes, so this integrates directly into memory subsystems built for error-checked capacity, not just raw speed.
• Up to 8 registered DIMMs supported: sets your practical memory ceiling per socket when planning total server RAM.
• Double-bit detect, single-bit correct ECC: catches and corrects single-bit memory errors in the field — the baseline reliability feature expected in server deployments running unattended.
• 40mm x 40mm substrate: confirms physical footprint against your existing socket and heat sink mounting hardware before ordering.

Integration & Compatibility

OSA8218CYWOF is a direct-fit part for boards and chassis already qualified for the 940-pin Opteron 8000-series socket. Since this is the no-fan (OF) variant, verify your chassis heat sink and airflow path independently — this unit assumes an existing cooling solution rather than including one.

Frequently Asked Questions

Q: Does the OSA8218CYWOF include a fan or cooling solution?

A: No — this is the no-fan (OF) variant. It relies on an existing heat sink and chassis airflow already qualified for the 940-pin socket.

Q: What socket does the OSA8218CYWOF use?

A: A 940-pin Organic Micro PGA package with 1.27mm pin pitch.

Q: How much memory can a system with the OSA8218CYWOF support?

A: The processor's memory controller supports up to 8 registered DIMMs via a 144-bit DDR SDRAM interface running at 200 MHz.

Q: Does the OSA8218CYWOF support ECC memory?

A: Yes — it supports double-bit detect, single-bit correct ECC.

Eden Phillips

The OSA8218CYWOF is a socket-compatibility part first — if you're running a 4-socket or 8-socket Opteron 8000-series board and need a drop-in dual-core replacement or expansion part, the 940-pin Organic Micro PGA footprint at 1.27mm pitch is what gets you there without a board swap.

Technical Highlights:

• Three HyperTransport links at 2000 MT/s (4.0 GB/s): this is what lets multiple OSA8218CYWOF units talk to each other glueless in multi-socket configurations — check your board's HT topology before assuming full bandwidth across all sockets.
• 1-MB L2 plus 64-KB/64-KB L1 data/instruction cache per core: a modest but standard cache hierarchy for this generation of dual-core Opteron — expect this part to bottleneck before the memory controller does on cache-sensitive workloads.
• 144-bit DDR SDRAM controller, 200 MHz, up to 8 registered DIMMs: the 144-bit width bakes in ECC lanes, so double-bit detect/single-bit correct comes standard on this memory path.

Deployment Considerations:

• This is the no-fan (OF) variant — confirm your chassis heat sink and airflow are already validated for this socket before ordering; there's no bundled cooling solution here.
• The 40mm x 40mm substrate and 940-pin pitch must match your board's existing socket exactly — this is not a part to buy speculatively without confirming board revision.

Right fit for shops sustaining or expanding legacy 4-socket and 8-socket Opteron 8000-series deployments where board-level and HyperTransport-topology compatibility rules out a newer-generation swap.