Intel Xeon Gold 5420+

Server CPUIntel

Also called intel xeon gold 5420+, xeon gold 5420+, 5420+, xeon-gold-5420+

IntelServer CPUSapphire Rapids

Intel Xeon Gold server processor on Sapphire Rapids, with 28 cores and 56 threads and 52.5 MB L3 at 205 W TDP addressing up to 4 GB and no integrated graphics.

What you need to know

Still a capable Xeon Gold desktop chip.

Intel Xeon Gold 5420+ launched in January 1, 2023., It has 28 cores and 56 threads on Sapphire Rapids, dropping into the FCLGA4677 socket. It is no longer the newest SKU in every store, but the chip is still useful when the rest of the PC keeps up.

Still good?: Yes, for most work this class is sold for
Product age: 3 years old
Upgrade pressure: Low to moderate

Feex says

This SKU has no picture of its own. If the machine has no discrete GPU, a black screen after install is expected, not a dead CPU.

What this hardware means today

Age and usefulness are not the same number. This page keeps them separate.

Performance today: Excellent. Excellent for the class when RAM, storage, and the GPU keep up.
Product age 3 years old: Previous generation. Launched January 1, 2023. Newer platforms exist. That does not make this chip unusable by itself.
Support status: Supported. Current Windows and current applications still run on this class of CPU. Platform BIOS support depends on the motherboard or laptop vendor.
Upgrade pressure: Low to moderate. Upgrade pressure comes from platform features and specific CPU-bound work, not from the chip being unusable.

Where does it sit?

Sapphire Rapids sits on Intel's recent Core timeline. Later desktop branding moved toward Core Ultra.

11th Gen

12th Gen

13th Gen

14th Gen

Core Ultra

Performance context

These are qualitative readings, not a fake 8.7 out of 10. Workload still wins.

Gaming: Poor fit

Not the job. Use a desktop or workstation part if games are the point.

Productivity: Excellent

28 cores cover office, browser, and compile work in this class.

Multithreaded workloads: Very Good

56 threads. Heavy encodes still scale further on higher-core parts.

General use: Excellent

Everyday Windows use is not where most people notice this SKU first.

Efficiency: Average

Rated 205 W base power. That is a platform number, not a promise about your cooler.

Should you upgrade?

Probably not based on CPU performance alone.

Upgrade makes more sense if

Your workload is strongly CPU limited
You need a newer platform for memory, I/O, or chipset features
You need substantially more multicore performance
You need newer connectivity that your current board cannot offer

Upgrade makes less sense if

The GPU is the real bottleneck
Current applications are already responsive
The CPU rarely limits your workload

Specifications

Figures below follow the Feex Hardware Database record for this SKU. Fields without a recorded value are omitted.

Processor

Intel Xeon Gold 5420+ is built on Sapphire Rapids.

Intel Xeon Gold 5420+ specifications: Processor
Manufacturer	Intel
Family	Xeon Gold
Architecture	Sapphire Rapids
Generation	4th Gen Intel Xeon Scalable Processors
Segment	Server

Cores and threads

Intel Xeon Gold 5420+ has 28 cores and 56 threads.

Intel Xeon Gold 5420+ specifications: Cores and threads
Cores	28
Threads	56

Clock speeds

Base clock is 2.0 GHz. Boost reaches 4.1 GHz.

Intel Xeon Gold 5420+ specifications: Clock speeds
Base frequency	2.0 GHz
Max boost	4.1 GHz

Cache

Cache on this sheet is 52.5 MB L3.

Intel Xeon Gold 5420+ specifications: Cache
L3 cache	52.5 MB
Total cache	52.5 MB

Memory

Intel Xeon Gold 5420+ addresses 4 GB across 8 memory channels.

Intel Xeon Gold 5420+ specifications: Memory
Supported types	DDR5
Max capacity	4 GB
Channels	8

Package and power

Intel Xeon Gold 5420+ uses the FCLGA4677 socket and a 205 W TDP.

Intel Xeon Gold 5420+ specifications: Package and power
Socket	FCLGA4677
TDP	205 W
PCIe	Revision 5, 80 lanes

Integrated graphics

Intel Xeon Gold 5420+ does not include integrated graphics.

Intel Xeon Gold 5420+ specifications: Integrated graphics
Integrated graphics	None

Market

Intel Xeon Gold 5420+ launched January 1, 2023 at USD 2070 (suggested price at launch).

Intel Xeon Gold 5420+ specifications: Market
Launch date	January 1, 2023
Launch MSRP	USD 2070 (suggested price at launch)
Model	5420+

Features

Intel Xeon Gold 5420+ records 9 instruction sets on this sheet.

Intel Xeon Gold 5420+ specifications: Features
Instruction sets	AES-NIAMXAVX-512AVX2AVXFMASHA64-bit (x86-64)SSE4.2
Security	Control-flow Enforcement (CET)Execute Disable (NX)Boot GuardOS GuardSGXTrusted ExecutionMode-Based Execute Control
Virtualization	Extended Page Tables (EPT)VT-d (DMA Remapping)VT-x (Hardware Virtualization)

Compatibility

Compatibility
Socket	FCLGA4677
Board	A shared socket is not automatic compatibility. Check the motherboard CPU list and BIOS revision.
Memory	DDR5, up to 4 GB
Graphics	Requires a discrete GPU. This SKU has no iGPU.

A shared socket is not automatic compatibility. Boards often need a BIOS update before a newer chip in the same socket will post.

Cooler clearance, VRM quality, and power limits matter as much as the socket name.

Do not expect a display from the motherboard video ports. This SKU has no integrated graphics.

No display after install

This SKU has no integrated graphics. A machine with no discrete GPU will not show a picture. That is expected, not a dead CPU.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Partially Verified. How we research.

Feex Hardware Database · Specification source used for this sheet. CC BY 4.0.

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