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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →AMD EPYC 7003 and Intel 3rd Gen Xeon Scalable are 2021 server CPU families with eight-channel DDR4-3200 memory support, but their family-level ceilings differ: EPYC 7003 offers up to 64 cores and 128 PCIe Gen 4 lanes per socket, while Ice Lake-SP reaches up to 40 cores and 64 PCIe Gen 4 lanes per processor. Those maxima do not prove that one family is faster. A useful choice depends on exact processor models, memory configuration, socket count, server design, and the workload.
What EPYC 7003 and Ice Lake-SP are
AMD EPYC 7003, code-named Milan, is AMD’s third-generation EPYC server processor family based on Zen 3. AMD launched it on March 15, 2021. Intel’s Ice Lake-SP name refers to its 3rd Gen Xeon Scalable processors, announced on April 6, 2021. These are historical product generations, so the specifications below describe those families rather than implying they are the newest server CPUs available today. AMD’s launch announcement and Intel’s launch announcement provide the dated context.
![AMD EPYC 7003 7543P Dotriaconta-core [32 Core] 2.80 GHz Processor](https://m.media-amazon.com/images/I/41GnHnfJeoL._SL160_.jpg)
![AMD EPYC 7003 7343 Hexadeca-core [16 Core] 3.20 GHz Processor](https://m.media-amazon.com/images/I/310lZyo55NL._SL160_.jpg)
![AMD EPYC 7003 7453 Octacosa-core [28 Core] 2.75 GHz Processor](https://m.media-amazon.com/images/I/31fRgmpQmDL._SL160_.jpg)
Family specifications at a glance
These are documented family ceilings or broad platform capabilities, not a like-for-like comparison of individual processors. An individual SKU or server may support less.
| Specification | AMD EPYC 7003 (Milan) | Intel 3rd Gen Xeon Scalable (Ice Lake-SP) |
|---|---|---|
| Architecture and process description | Zen 3; AMD overview lists 7 nm | Intel launch material describes 10 nm process technology |
| Maximum cores | Up to 64 per processor | Up to 40 per processor |
| Memory channels and maximum speed | Eight channels; up to DDR4-3200 | Eight channels; up to DDR4-3200 |
| Maximum memory capacity | Up to 4 TB per socket in AMD’s overview | Up to 6 TB per socket in Intel’s launch material; SKU and platform dependent |
| PCI Express | Up to 128 PCIe Gen 4 lanes per socket | Up to 64 PCIe Gen 4 lanes per processor |
| Socket support | Models include one- and two-socket support, varying by SKU | Family supports one- and two-socket platforms |
| Cache | Standard Milan and Milan-X variants; Milan-X models reach up to 768 MB L3 at the family maximum | Cache varies by processor; a comparable family-wide maximum is not established in the cited overview |
The figures come from AMD’s EPYC 7003 technical overview, Intel’s 3rd Gen Xeon Scalable technical overview, and Intel’s 2021 launch material. The process labels alone do not establish which processor performs better.
#1 Best Overall
How to interpret the biggest differences
Core count depends on the exact model
EPYC 7003’s 64-core ceiling is higher than Ice Lake-SP’s 40-core ceiling, but a family maximum is not a fair comparison of two systems. Compare the specific CPU models, enabled core counts, clock behavior, and socket counts. More cores may help a highly parallel workload; they do not guarantee better results in software limited by a smaller number of threads or by other system constraints.
Memory capacity and bandwidth are not the same thing
Both families support eight DDR4 memory channels at speeds up to 3200 MT/s in their cited family documentation. Intel’s launch material lists capacity up to 6 TB per socket; AMD’s overview lists up to 4 TB per socket. Those are platform- and SKU-dependent limits, not a promise that every server configuration can use that capacity. Actual supported capacity and performance depend on the processor, DIMM type and population, motherboard, BIOS, and workload.
Rank #2
PCIe lanes can shape system design
AMD lists up to 128 PCIe Gen 4 lanes per socket, compared with Intel’s 64 per processor. This can matter when a server needs to connect several accelerators, high-speed network adapters, or storage devices. The CPU lane ceiling is not necessarily the number of usable slots: check the server’s board layout and lane routing, and account for any platform sharing or restrictions.
Milan-X adds a cache-specific option
AMD’s EPYC 7003 family includes Milan-X processors with 3D V-Cache, reaching a family maximum of 768 MB of L3 cache. That may be relevant when an application benefits from a larger cache, but the capacity figure alone does not establish a performance advantage. Compare results for the exact processor and target software rather than treating cache size as a universal speed ranking. AMD describes the family and V-Cache variants in its technical overview.
Rank #3
What the performance claims do—and do not—show
Intel said in its April 6, 2021 announcement that 3rd Gen Xeon Scalable processors achieved an average 46% improvement on “popular data center workloads” compared with Intel’s prior generation. That is Intel’s selected-workload, previous-generation comparison—not a measured advantage over AMD EPYC 7003.
AMD’s March 2021 launch release also includes model-level claims and benchmark footnotes. The two vendors’ published material uses different test selections and comparison baselines. It does not establish a controlled, independent head-to-head result across representative EPYC 7003 and Ice Lake-SP workloads. As a result, neither the 46% Intel figure nor a family specification should be presented as proof that one of these families is categorically faster. See the original Intel announcement and AMD announcement for the vendors’ claims and their context.
Rank #4
- Socket SP3 Enables PCB Placement Without Soldering
- Processor Equipped with Socket SP3 for PCB Installation
- EPYC Processor Ensures Reliability and Maximum Productivity
- 128 MB L3 Cache Boosts System Performance, Minimizes Interruptions
- 24-Core Processor Core Handles Data Efficiently for Quick Information Transfer
How to compare two candidate servers fairly
For a decision tied to your workload, compare complete systems rather than family maxima. Use results for the application and configuration you intend to run, and keep the following factors aligned:
- Exact processor: Record SKU, core and thread count, clocks, and cache variant. Do not compare one family’s flagship with an unspecified model from the other.
- Socket count: Compare one-socket with one-socket or two-socket with two-socket systems, and check each CPU’s actual socket support.
- Memory configuration: Match capacity, DIMM type, channel population, and operating speed as closely as practical. Include NUMA behavior when the application is sensitive to memory locality.
- System implementation: Confirm PCIe slot and lane routing, BIOS qualification, and support for the accelerators, network cards, and storage the server will use.
- Test conditions: Record software and compiler versions, power limits, and any workload-specific settings. Distinguish vendor-submitted figures from independent measurements.
- Decision metric: Evaluate the performance that matters for your task, then consider performance per watt, platform cost, security and software support, and OEM qualification.
Which family should you choose?
There is no universal winner established by the family specifications or vendor launch claims cited here. EPYC 7003’s higher core-count and PCIe-lane ceilings may make it a candidate when a compatible workload or system needs those resources; Ice Lake-SP’s documented support for up to 6 TB of memory per socket may matter for a configuration that needs that capacity. In either case, confirm that the exact SKU and server platform support the required configuration, then base a performance choice on comparable workload-specific system results.
Best Value
- The processor upgrade features Socket SP3 socket for installation on the PCB
- EPYC product line processor upgrade for better usability and increased efficiency
- Hexadeca-core (16 Core) processor core allows multitasking with great reliability and fast processing speed
- 3rd Gen processor upgrade generation deliver extraordinary performance upgrades for enhanced productivity and stunning entertainment
- 123 MB of L3 cache memory provides excellent hit rate in short access time enabling improved system performance
Checking a specific EPYC 7003 processor
For example, AMD’s EPYC 7003 data sheet identifies the EPYC 7763 as a 64-core, 128-thread processor. It is a server CPU, so a listing alone is not enough to establish that it will work in a given machine. Check the server’s socket, BIOS, and CPU compatibility documentation, as well as the processor’s condition and seller. The model’s specifications are in AMD’s EPYC 7003 data sheet.
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