Intel Xeon Platinum 8573C
The 8573C is an OEM and cloud-custom part that Intel does not publish: Microsoft documents it as an "Intel Xeon Platinum 8573C (Emerald Rapids)" host processor for its cloud instances, but Intel returns no product page for the processor number and its core count, clocks, cache and power rating are not stated by any source we could reach. This page therefore carries only what is documented, names every source, 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
Hardware Gallery
The Xeon Platinum 8573C, Up Close
Xeon Platinum 8573C - Cloud-Custom Part
The physical marking on the unit we photographed reads INTEL XEON PLATINUM 8573C, sSpec SRN4L, with the lot code J545E290 and FPO/batch 75TU991901598. Microsoft documents this processor number as an Emerald Rapids (5th Gen Intel Xeon Scalable) part used as a host CPU in its cloud instances, with hyper-threading and a 3.5GHz all-core turbo clock. That is the whole of the verifiable public record: no source we reached states its core count, base clock, cache size or power rating, and the listing pages that do quote figures for it are marketplace text we do not treat as a specification source.
LGA 4677 Socket Class
Emerald Rapids is the 5th Gen Intel Xeon Scalable generation, which uses the LGA 4677 socket - the same socket family as the documented Xeon Gold 6530. We did not find a document that states the socket for this specific processor number, so treat the socket line as platform-derived rather than SKU-documented, and confirm the part against your platform's supported-CPU list. The underside photo is a representative package photo for the socket class, not a claim about this individual unit.
Emerald Rapids
5th Gen Xeon Scalable (Microsoft-documented)
SRN4L
sSpec read from the physical marking
3.5GHz
all-core turbo (Microsoft-documented)
Key Specifications
| Component | Specification |
|---|---|
| Processor | Intel Xeon Platinum 8573C (OEM / cloud-custom SKU) |
| Generation | Emerald Rapids / 5th Gen Intel Xeon Scalable - documented by Microsoft as a cloud host processor |
| Cores / Threads | Not published by any source we could reach - see the note below |
| Base frequency | Not published by any source we could reach - see the note below |
| All-core turbo frequency | 3.5 GHz (Microsoft cloud documentation) |
| 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 |
| Socket | LGA 4677 platform (the Emerald Rapids generation's socket). Platform-derived rather than stated for this processor number by a document we could reach. |
| Hyper-threading | Yes (Microsoft cloud documentation) |
| sSpec | SRN4L - read from the laser marking on the unit we photographed; not confirmed against an Intel registry, because Intel publishes no record for this processor number |
| Intel-published specification | None - Intel returns no product page for this processor number, and it is absent from Intel's published 5th Gen Xeon Scalable SKU list |
| Specification source | Intel documentation is not published for this SKU: the Intel product URL for this processor number resolves to a different product, and Intel's own 5th Gen Xeon Scalable ARK series page enumerates its published SKUs without listing this part. The generation, the hyper-threading capability and the 3.5GHz all-core turbo figure come from Microsoft's cloud documentation naming Intel Xeon Platinum 8573C (Emerald Rapids) as a host processor. The sSpec is read from the physical marking on the unit photographed. Core count, base clock, cache size, TDP, launch date and Intel RCP are not stated by any source we reached and are therefore omitted. Every specification is confirmed against the physical part per order. |
This is the thinnest public record in our CPU range, and we would rather say so than pad it. The Xeon Platinum 8573C is a non-ARK OEM and cloud-custom part: Intel returns no product page for the processor number, and it does not appear on Intel's published SKU list for its own generation. What can be documented is that Microsoft names it, as "Intel Xeon Platinum 8573C (Emerald Rapids)", among the host processors behind its cloud instances - which tells you what the part is for, and confirms the generation and the 3.5GHz all-core turbo clock.
What cannot be documented is the arithmetic of the chip: core count, base clock, cache size and power rating. You will find those figures on marketplace listing pages, but a listing is not a specification source - we have seen marketplace titles for 84xx parts that contradict their own socket generation - so the cells stay blank and we confirm them against the physical part and your build sheet. If your platform specifies the 8573C, we supply and verify the 8573C; if you need a datasheet, the Xeon Gold 6530 is the Intel-documented part of the same Emerald Rapids generation. Full range: Intel server CPUs.
Transparent Pricing
2026 Reference Pricing by Configuration
The Xeon Platinum 8573C is an OEM and cloud-custom SKU, not a retail product. Intel publishes no product page and 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, 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 pairs for dual-socket LGA 4677 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 in the same generation: 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 8573C Ships
Model String and sSpec Verification
The laser marking is read under magnification and checked against the exact model string and sSpec on your order. Intel publishes no product page for this SKU, so verification is physical plus order-specification rather than a database lookup - and with no published core count to fall back on, the marking is the only reliable identifier.
Land Array Inspection
The processor-side 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
The processor is posted on a reference LGA 4677 platform and every core it reports is enumerated, which is also how we establish the core count for a part whose datasheet does not exist.
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 8573C 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 8573C and the Xeon Gold 6530?
Both are Emerald Rapids - the 5th Gen Intel Xeon Scalable generation - and they sit on the same LGA 4677 socket family, but they are opposites on documentation. The 6530 is an Intel-published product: Intel gives it 32 cores / 64 threads, 160MB L3, 270W, eight DDR5-4800 channels, 80 PCIe 5.0 lanes and AMX, with a recommended customer price, and we publish all of it. The 8573C is documented only by Microsoft, as a cloud host processor with hyper-threading and a 3.5GHz all-core turbo; its core count, base clock, cache and power rating are not published anywhere we could verify. So if you need a specification you can check against a datasheet, the 6530 is the one; if your platform specifies the 8573C, we supply and verify the 8573C and will not present the 6530's figures as its own.
Why are the core count, cache and TDP missing from this page?
Because no source we could reach publishes them. Intel returns no product page for this processor number, Microsoft's documentation states the generation and clocks but not those figures, and we do not use marketplace listing text as a specification source - on this very part the listing descriptions disagree with each other. An unsourced number in a specification table is worse than a blank, so the cells stay empty and we confirm them 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 sSpec verified against your order specification, land array inspected under magnification, POST with all reported cores and 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 8573C 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 8573C 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