Intel Xeon Platinum 8457C
48 cores / 96 threads per socket, listed at 2.6GHz base and 3.8GHz maximum turbo on the FCLGA4677 server socket. The 8457C is an OEM and cloud-custom part: Intel returns no product page for it, so this page carries only the figures we can trace to named public records, names every one of them, and confirms the specification 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 8457C, Up Close
Xeon Platinum 8457C - 48-Core Cloud-Custom Part
48 cores / 96 threads per socket, listed at 2.6GHz base clock and 3.8GHz maximum turbo on FCLGA4677. This is an OEM and cloud-custom SKU built for hyperscaler and OEM platforms rather than boxed retail sale; Microsoft documents the 8457C as a host processor for its Dv5/Dsv5-series cloud instances, which is what a part like this is made for. The core count, clocks and socket on this page are recorded for this exact model string by the PassMark CPU Benchmark database, from a single submitted sample. TDP and cache size are not published by any source we could reach, so they are absent from the table rather than guessed.
FCLGA4677 Socket Class
FCLGA4677 is the socket introduced with Intel's 4th Gen Xeon Scalable (Sapphire Rapids) generation and carried into the 5th Gen parts, which is why a 84xx processor number sits on the same socket family as the documented Xeon Gold 6530. Because Intel publishes no datasheet for this SKU, we do not print a memory channel count, PCIe lane count or power rating for it: those are confirmed against the physical part and your OEM build sheet at order time.
48
cores / 96 threads per CPU
2.6GHz
listed base clock (3.8GHz turbo)
FCLGA4677
server socket
Key Specifications
| Component | Specification |
|---|---|
| Processor | Intel Xeon Platinum 8457C (OEM / cloud-custom SKU) |
| Cores / Threads | 48 cores / 96 threads per CPU |
| Base frequency | 2.6 GHz (PassMark CPU Benchmark record for this model string) |
| Max turbo frequency | 3.8 GHz (same record) |
| Socket | FCLGA4677 |
| sSpec | SRM7Q - read from the laser marking on the unit we photographed; not confirmed against an Intel registry, because Intel publishes no page for this processor number |
| Generation / platform class | FCLGA4677 socket, the 4th/5th Gen Xeon Scalable platform. Microsoft documents the 8457C as a host processor for its Dv5/Dsv5-series cloud instances. |
| L3 cache | Not published by any source we could reach - see the note below |
| TDP | Not published by any source we could reach - see the note below |
| Benchmark reference | PassMark record id 6310, flagged by PassMark itself as a single-sample result with a high margin of error. A separate PassMark baseline (Oct 2024, Ubuntu 22.04) shows a dual-socket 8457C system running at 3.80 GHz, which corroborates that the part is deployed in the field. |
| Intel-published specification | None - Intel returns no product page or datasheet for this processor number (requests for it resolve to Intel's 404 page) |
| Specification source | Intel documentation is not published for this SKU: the Intel product URL for this processor number returns a 404, and Intel's own 5th Gen Xeon Scalable ARK series page enumerates its published SKUs without listing this part. The core count, clocks and socket above come from the PassMark CPU Benchmark record for Intel Xeon Platinum 8457C (cpubenchmark.net, id 6310), a community-sourced record based on a single sample; the platform-class statement is corroborated by Microsoft's cloud documentation. Cache size, TDP, memory support, PCIe lanes, launch date, Intel RCP and sSpec are not stated by any source we reached and are therefore omitted. Every specification is confirmed against the physical part per order. |
The Xeon Platinum 8457C is a non-ARK OEM and cloud-custom part: a real Intel processor number that Intel does not publish, built to an OEM or hyperscaler platform specification rather than sold through distribution. That is not an assumption - the Intel product URL for this processor number resolves to Intel's 404 page, and Intel's own published SKU list for this generation does not contain it. Microsoft documents the 8457C as a host processor for its cloud instances, which is exactly where parts like this live.
The practical consequence is a thin public record. This page can state the core count, clocks and socket from a named community benchmark database, and it can name the platform class, but it cannot tell you the cache size or the power rating, because no source we reached publishes them - and an unsourced number in a specification table is worse than a blank. If your platform specifies the 8457C we supply and verify the 8457C against your build sheet. If you need a fully documented 48-core-class part on the same socket family, the Xeon Gold 6530 carries Intel's own datasheet. Full range: Intel server CPUs.
Transparent Pricing
2026 Reference Pricing by Configuration
The Xeon Platinum 8457C is an OEM and cloud-custom SKU, not a retail product. Intel publishes no recommended customer price for it - and no product page at all - so there is no list price to quote against and we publish no figure whatsoever. Every quote is built from the tray stock we can actually confirm for your quantity, and because Intel publishes no datasheet for this SKU the part you receive is checked against your order specification rather than against an Intel product page.
Tray / OEM Single Units
On Request
Individually tested OEM tray stock and decommissioned pulls. Cloud-custom SKUs move in batches rather than steady supply, so availability is confirmed against live stock before we quote.
Matched Pairs
On Request
Matched-stepping 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 product page and no Intel list price, and we will not print an uncollected number. Send us quantity and target platform for a firm quote. Intel-documented alternative on the same socket family: Xeon Gold 6530. 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 8457C Ships
Model String and Stepping Verification
Heat-spreader marking is read under magnification and checked against the exact model string on your order. Intel publishes no product page for this SKU, so verification is physical plus order-specification rather than a database lookup - and the 84xx block contains enough similar part numbers that the marking is the only reliable identifier.
FCLGA4677 Pad Inspection
The 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 enumerated so nothing is silently dead.
Memory Channel Validation
All populated DDR5 channels are exercised on the reference platform. A CPU that posts but drops a channel is not shippable.
Board and Firmware Compatibility
BIOS and microcode compatibility is confirmed against your board family when you tell us the platform in advance - on a cloud-custom SKU, the platform's supported-CPU list 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 8457C cost?
We quote it against live tray stock rather than publishing a price. This is an OEM and cloud-custom SKU: Intel publishes no product page and 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 8457C and the Xeon Gold 6530?
They sit on the same FCLGA4677 socket family but on opposite sides of the documentation line. The 6530 is an Intel-published product: Intel's own specification gives it 32 cores / 64 threads, a 2.1GHz base clock, 160MB L3, 270W, eight DDR5-4800 channels, 80 PCIe 5.0 lanes and AMX, with a recommended customer price. The 8457C is a non-ARK custom part listed at 48 cores / 96 threads with a 2.6GHz base and 3.8GHz turbo, but its cache size, power rating, memory support and PCIe lanes are not published by any source we could reach. So the 8457C offers 50% more cores on the same socket, on a materially thinner public record. If a datasheet matters, take the 6530; if your platform specifies the 8457C, we supply and verify the 8457C rather than substituting one for the other.
Why are cache size and TDP missing from this page?
Because we could not source them. Intel publishes no product page for the 8457C, and the community benchmark record that documents its core count, clocks and socket does not state a cache size or a TDP. Some listings circulate a cache figure for this part, but listings are not a specification source - we have seen marketplace titles for 84xx parts that even contradict their own socket generation - so we leave the cell blank and confirm it against the physical part and your build sheet instead.
What condition are these CPUs in, and what warranty applies?
Units are graded OEM tray stock and decommissioned server pulls: model marking verified against your order specification, FCLGA4677 pads inspected under magnification, full 48-core POST with 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 8457C 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 8457C 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.
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