Intel Xeon Gold 5420+ CPU – Full Technical Specification
The Intel Xeon Gold 5420+ is a high‑end enterprise‑class server processor from Intel’s 4th Generation Xeon Scalable family, designed for demanding data center workloads, virtualization platforms, cloud computing, and mission‑critical enterprise applications. Built on Intel’s Sapphire Rapids‑SP architecture, this CPU delivers excellent multi‑threaded performance, large cache capacity, and support for modern memory and I/O technologies.
With 28 physical cores and 56 threads, the Xeon Gold 5420+ combines robust parallel computing power with high clock frequencies and advanced instruction support for enterprise, analytics, and virtualization tasks. The processor supports eight‑channel DDR5 memory, PCIe Gen5 connectivity, and scalable multi‑socket configurations to meet the needs of modern data centers.
General CPU Specifications
| Parameter | Specification |
|---|---|
| Processor Name | Intel Xeon Gold 5420+ |
| CPU Family | 4th Generation Intel Xeon Scalable |
| Architecture | Sapphire Rapids‑SP |
| Process Technology | Intel 7 (10 nm class) |
| Target Segment | Server / Enterprise |
| Socket | FCLGA4677 |
| Maximum Sockets | 2‑socket systems supported |
| UPI Speed | 16 GT/s |
| UPI Links | Up to 3 |
| Thermal Design Power (TDP) | 205 W |
Core and Performance Features
| Feature | Details |
|---|---|
| Total Physical Cores | 28 |
| Total Logical Threads | 56 |
| Base Clock Frequency | 2.00 GHz |
| Max Turbo Frequency | Up to 4.10 GHz |
| All‑Core Turbo Frequency | Approx. 2.70 GHz |
| High Priority Core Frequency | 2.20 GHz |
| Low Priority Core Frequency | 1.60 GHz |
| L3 Cache | 52.5 MB Intel Smart Cache |
Memory Specifications
| Feature | Specification |
|---|---|
| Supported Memory Types | DDR5‑SDRAM |
| Maximum Memory Speed | Up to 4400 MT/s |
| Memory Channels | 8‑channel (Octa‑channel) |
| Maximum Memory Capacity | Up to 4 TB per socket |
| ECC Memory Support | Yes |
I/O and Expansion Capabilities
| Feature | Specification |
|---|---|
| PCI Express Version | PCIe 5.0 |
| Maximum PCIe Lanes | Up to 80 lanes |
| Scalability | Supports multi‑socket systems |
| High‑Speed Interfaces | Networking, storage, and accelerator support |
Cache and Core Configuration
| Cache Level | Size |
|---|---|
| L1 Cache (per core) | 80 KB (Instruction + Data) |
| L2 Cache (per core) | 2 MB |
| L3 Cache | 52.5 MB shared |
Advanced Technologies and Features
| Technology | Supported |
|---|---|
| Intel Hyper‑Threading Technology | Yes |
| Intel Turbo Boost Technology | Yes |
| Intel Virtualization Technology (VT‑x) | Yes |
| Intel Directed I/O Virtualization (VT‑d) | Yes |
| Intel Advanced Vector Extensions (AVX, AVX2, AVX‑512) | Yes |
| Intel Deep Learning Boost | Yes |
| Intel Advanced Matrix Extensions (AMX) | Yes |
| ECC Memory Support | Yes |
| Intel AES New Instructions (AES‑NI) | Yes |
| Control‑Flow Enforcement Technology | Yes |
| Data Streaming Accelerator (DSA) | Yes |
| QuickAssist Technology (QAT) | Yes |
Performance Highlights
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28 cores and 56 threads provide powerful parallel execution for highly threaded workloads.
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Base frequency of 2.00 GHz boosts up to 4.10 GHz on demand for latency‑sensitive tasks.
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52.5 MB L3 cache reduces memory latency and enhances data‑intensive processing.
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Support for eight‑channel DDR5‑4400 memory ensures high bandwidth and capacity for virtualization and analytics.
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Extensive PCIe Gen5 lanes (up to 80) provide flexibility for high‑speed network and storage expansions.
Typical Use Cases
The Intel Xeon Gold 5420+ is ideal for:
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Virtualization and multi‑tenant cloud infrastructures
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Enterprise‑level database and analytics platforms
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High‑performance computing and compute‑intensive workloads
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Software‑defined networking and storage systems
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Mission‑critical enterprise servers with heavy concurrency
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Scalable multi‑socket server environments
Summary
The Intel Xeon Gold 5420+ server processor delivers a compelling blend of core density, high turbo performance, large cache, next‑generation memory support, and extensive I/O capabilities. Its robust architecture and advanced instruction set support make it well suited for modern data centers, virtualization hosts, and enterprise server deployments. With support for DDR5 memory, PCIe Gen5 connectivity, and multi‑socket scalability, the 5420+ provides strong performance, flexibility, and reliability for demanding enterprise workloads.
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