Intel Xeon Platinum 8559C
48 cores / 96 threads per socket at a listed 2.4GHz, on the FCLGA4677 server socket. The 8559C is an OEM and cloud-custom part: Intel publishes no ARK specification page for it, so this page carries only the figures we can trace to a named public source, and every specification is confirmed against the physical part when you order. Sourced and tested in Hong Kong.
Fully Tested & Documented · Hong Kong Warehouse Stock · Worldwide Shipping 3–7 Days · 1-Year Warranty
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The Xeon Platinum 8559C, Up Close
Xeon Platinum 8559C - 48-Core OEM Part
48 cores / 96 threads per socket at a listed 2.4GHz clock, on the FCLGA4677 server socket. This is an OEM and cloud-custom SKU: it is built for OEM and hyperscaler platforms rather than boxed retail sale, and Intel publishes no ARK specification page for it. The core count, thread count, clock and socket on this page are the figures recorded for this exact model string by PassMark CPU Benchmark.
FCLGA4677 Socket Class
The 8559C is listed on the FCLGA4677 socket, the socket family shared by Intel's 4th and 5th Gen Xeon Scalable server platforms. Because Intel publishes no datasheet for this SKU, we do not print memory channel counts, PCIe lane counts or power ratings for it: those are confirmed against the physical part and your OEM build sheet at the time of order, and we say so rather than filling the table with numbers we cannot source.
48
cores / 96 threads per CPU
2.4GHz
listed clock (PassMark record)
FCLGA4677
server socket
Key Specifications
| Component | Specification |
|---|---|
| Processor | Intel Xeon Platinum 8559C (OEM / cloud-custom SKU) |
| Cores / Threads | 48 cores / 96 threads per CPU |
| Base frequency | 2.4 GHz (listed for this model by PassMark CPU Benchmark) |
| Socket | FCLGA4677 |
| Part class | Server tray / OEM part - no boxed retail SKU |
| Benchmark reference | PassMark CPU Mark 117,672 for a dual-socket 8559C system; single-thread rating 2,590 (one submitted sample, high stated margin of error) |
| Intel-published specification | None - Intel ARK carries no product page for this SKU |
| Specification source | Manufacturer documentation is not published for this SKU; figures above are from PassMark CPU Benchmark (cpubenchmark.net, Intel Xeon Platinum 8559C, id 7069) and confirmed per order |
The Xeon Platinum 8559C is an OEM and cloud-custom part, so treat this table as a starting point, not a datasheet: Intel does not publish a specification page for this SKU, and every figure above is traceable to one named public benchmark record for this exact model string. That is why cache size, memory channel count, PCIe lanes and power rating are absent - we confirm those against the physical part and your OEM build sheet when you order, and we will pass on any batch documentation we can obtain for the specific units.
The other custom part we carry on this platform is the Intel Xeon Platinum 8581C (60-core record). If you need an Intel-documented specification instead, browse the published SKUs in our Intel server CPUs range.
Transparent Pricing
2026 Reference Pricing by Configuration
The Xeon Platinum 8559C is an OEM and cloud-custom SKU, not a retail product. Intel publishes no recommended customer price for it, so there is no list price to quote against and we publish no figure at all - every quote is built from the tray stock we can actually confirm for your quantity. The same discipline applies to the specification: because Intel publishes no datasheet for this SKU, what you receive is checked against your order specification rather than against an Intel product page, and we confirm it with you before the order is final.
Tray / OEM Single Units
On Request
Individually tested OEM tray stock and decommissioned pulls. Custom SKUs like this move in batches rather than steady supply, so availability is confirmed against live stock before we quote.
Matched Pairs
On Request
Matched stepping and microcode pairs for dual-socket FCLGA4677 builds, so a 2P system is not assembled from unrelated lots. Tell us your board and platform generation.
Volume Orders (10+ units)
On Request
Multi-unit and repeat orders are quoted against live inventory, with freight consolidated from our Hong Kong warehouse.
No price is published for this SKU: it is an OEM and cloud-custom part with no Intel list price, and we will not print an uncollected number. Send us quantity and target platform for a firm quote. Related custom SKU: Xeon Platinum 8581C. Full range: Intel server CPUs.
Origin
Hong Kong Warehouse
Free port — full export documentation
Transit
3–7 Days Air Freight
Tracked, insured, worldwide
Warranty
1-Year Warranty
Diagnostic report in every box
Quality Process
What We Check Before a Xeon Platinum 8559C Ships
Model String and Marking Verification
Heat-spreader marking and OPN are checked against the exact model string on your order. Intel publishes no ARK page for this SKU, so verification is physical plus order-specification rather than a database lookup.
Socket Pad and Substrate Inspection
The FCLGA4677 land array is inspected under magnification for bent contacts, contamination or rework marks - the most common reason a decommissioned server CPU is rejected.
POST and Core Enumeration
Full 48-core / 96-thread POST on a reference FCLGA4677 board, with every core and every memory channel exercised so nothing is silently dead.
Thermal Behaviour Under Load
Load temperatures are logged so units with degraded heat-spreader contact are pulled before shipment.
Board and Firmware Compatibility
BIOS and microcode compatibility is confirmed against your board family when you tell us the platform in advance - on a custom SKU, board-level acceptance is the practical compatibility check.
Report in the Box
Every unit ships with its per-machine diagnostic report and warranty. Full process: inspection guide.
Frequently Asked Questions
How much does an Intel Xeon Platinum 8559C cost?
We quote it against live tray stock rather than publishing a price. This is an OEM and cloud-custom SKU: Intel publishes no recommended customer price for it, so there is no list price to reference, and printing a number would mean guessing. Send us quantity and target platform for a firm quote.
What is the difference between the Xeon Platinum 8559C and the Xeon Platinum 8581C?
Both are OEM and cloud-custom Xeon Platinum parts that Intel does not document publicly, and both sit in the same 85xx naming block. On the public records we can trace, the 8559C is a 48-core / 96-thread part listed at 2.4GHz on FCLGA4677 (PassMark CPU Benchmark), while the 8581C is recorded as 60 cores / 120 threads with 300MB L3 (SiSoftware). That is roughly 25% more cores on the 8581C in those records - but they come from different systems, neither is an Intel datasheet, and both parts are ordered to a platform specification rather than from a catalogue. Treat the core counts as a directional guide and confirm the exact SKU, stepping and platform support against your order specification.
Why are there no cache, memory, PCIe or power figures on this page?
Because we could not source them, and an unsourced number on a specification table is worse than a blank. Intel publishes no ARK page or datasheet for the 8559C, the SKU does not appear in Intel's published price or specification lists, and secondary-market listings are not an acceptable source for chip specification. Cache size, memory channels, PCIe lanes and TDP are therefore omitted and confirmed against the physical part and your build sheet at order time.
What condition are these CPUs in, and what warranty applies?
Units are graded OEM tray stock and decommissioned server pulls: model marking and OPN verified against your order specification, FCLGA4677 pads inspected under magnification, full 48-core POST with all memory channels exercised, and thermal behaviour logged. Each CPU ships with its diagnostic report and a 1-year warranty.
Can you ship the Xeon Platinum 8559C worldwide from Hong Kong?
Yes. We ship worldwide from our Hong Kong warehouse with full export documentation, and express air freight typically arrives in 3 to 7 days to major markets. For volume or multi-SKU orders we consolidate freight with memory, storage and chassis to reduce the per-unit cost.
Get a Current Xeon Platinum 8559C Quote
Tell us quantity, your board model and whether the build is single or dual socket. We confirm tray availability, verify the part against your order specification, and reply with a firm quote - usually within one business day.
Request a Quote