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Intel Core I9 9920X (9th Gen) processor
Intel

9th Gen Intel Core i9-9920X

View on NeweggView on intel.com
Boost/Base Clock:
4.5 GHz / 3.5 GHz
Core/Thread Count:
12 Core / 24 Thread
Cache:
19.25MB L3 + 12MB L2 + 768KB L1
TDP:
165 Watts
CPU Process Node:
14 Nanometers
CPU Socket:
FCLGA2066
CPU Series:
Skylake-X, 9th Gen Intel Core
Memory Support:
DDR4-2666, non-ECC (ECC not supported)
Form Factor:
Server & Enthusiast

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Manufacturer: Intel Last updated: September 9, 2026

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9th Gen Intel Core i9-9920X Review

The 9th Gen Intel Core i9-9920X is a 12-core, 24-thread HEDT processor built on Skylake-X, running a 3.5 GHz base clock that boosts to 4.5 GHz within a 165 Watt TDP on the LGA2066 socket.

Sitting above the entry-level 9900X in Intel's 9th Gen X-series stack, this chip offered a genuine step up in core count for prosumer workstation users needing more parallel throughput.

Platform

This HEDT chip requires an X299-series motherboard on the LGA2066 socket, typically paired with quad-channel memory for genuine workstation-scale bandwidth.

How Is the Core i9-9920X in Terms of Performance

With 12 cores and 24 threads, this chip targets demanding workstation and content-creation workloads, offering a genuine step up in parallel throughput over the entry-level i9-9900X.

Benchmarks

As a genuine 12-core Skylake-X HEDT chip with a strong 4.5 GHz boost ceiling, this processor delivers considerably more multi-threaded throughput than the 10-core 9900X, appropriate for professionals needing genuine workstation-scale parallelism.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • Prosumer workstation workloads needing genuine 12-core, 24-thread throughput on Intel's HEDT platform

Not for

  • Buyers with more modest core-count needs, the entry-level i9-9900X offers HEDT platform features at a lower price

Specifications

What these specs mean

Identity

BrandIntel
Model Number9920X
Product FamilyCore i9
Release Year2018
SegmentHEDT

Cores and threads

Core Count12 cores
Thread Count24 threads
SMT SupportYes

Clocks

Base Clock3.5 GHz
Boost Clock4.4 GHz

Cache

L2 Cache12 MB
L3 Cache19.25 MB
3D V-CacheNo

Platform

SocketFCLGA2066
Multi-Socket SupportSingle Socket Only

Memory

Memory Channels4 channels
Max Memory Speed2666 MT/s
Max Memory Capacity0.125 TB
ECC SupportNo

PCIe and IO

PCIe Lanes44 lanes
PCIe GenerationPCIe 3.0
CXL SupportNone

Power and thermals

TDP165 W

Accelerators and security

Integrated GraphicsNo
AVX-512 SupportYes
AMX SupportNo

Manufacturing

Process Node14 nm
CPU SocketFCLGA2066

FAQs

What are the key specifications of the 9th Gen Intel Core i9-9920X?

The 9th Gen Intel Core i9-9920X has a 3.5 GHz base and 4.4 GHz boost clock, 19.25 MB of L3 cache and a 165 W TDP. It has no integrated graphics, so it needs a graphics card. Socket: FCLGA2066.

Will the 9th Gen Intel Core i9-9920X work with my current setup?

The 9th Gen Intel Core i9-9920X lists CPU Socket is FCLGA2066. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the 9th Gen Intel Core i9-9920X best suited to?

Best suited to: Prosumer workstation workloads needing genuine 12-core, 24-thread throughput on Intel's HEDT platform.

What are the drawbacks of the 9th Gen Intel Core i9-9920X?

Not the best fit for: Buyers with more modest core-count needs, the entry-level i9-9900X offers HEDT platform features at a lower price.

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