Consumercarts
Intel Core I9 9900X (9th Gen) processor
Intel

9th Gen Intel Core i9-9900X

View on NeweggView on intel.com
Boost/Base Clock:
4.5 GHz / 3.5 GHz
Core/Thread Count:
10 Core / 20 Thread
Cache:
19.25MB L3 + 10MB L2 + 640KB 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

Consumercarts is reader-supported. Learn more

Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: Intel Last updated: September 9, 2026

Report an error

Where to buy

9th Gen Intel Core i9-9900X Review

The 9th Gen Intel Core i9-9900X is a 10-core, 20-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.

As the entry point into Intel's 9th Gen X-series HEDT lineup, this chip offered the platform's genuine quad-channel memory bandwidth and extensive PCIe lanes at a more accessible 10-core tier.

Platform

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

How Is the Core i9-9900X in Terms of Performance

With 10 cores and 20 threads, this chip targets prosumer content-creation and workstation workloads, offering the HEDT platform's genuine memory bandwidth and PCIe lane advantages at a more accessible entry tier within the X-series stack.

Benchmarks

As a genuine 10-core Skylake-X HEDT chip with a strong 4.5 GHz boost ceiling, this processor delivers solid workstation-tier multi-threaded throughput, positioned as the accessible entry point into Intel's 9th Gen X-series HEDT lineup.

Our verdict

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

Best for

  • Prosumer content creators wanting HEDT platform memory bandwidth and PCIe lanes at a more accessible entry tier

Not for

  • Buyers needing the highest core counts, the i9-9920X, 9940X, and higher-tier X-series chips offer more cores on the same platform

Specifications

What these specs mean

Identity

BrandIntel
Model Number9900X
Product FamilyCore i9
Release Year2018
SegmentHEDT

Cores and threads

Core Count10 cores
Thread Count20 threads
SMT SupportYes

Clocks

Base Clock3.5 GHz
Boost Clock4.4 GHz

Cache

L2 Cache10 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 i9-9900X?

The 9th Gen Intel Core i9-9900X 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 i9-9900X work with my current setup?

The 9th Gen Intel Core i9-9900X 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 i9-9900X best suited to?

Best suited to: Prosumer content creators wanting HEDT platform memory bandwidth and PCIe lanes at a more accessible entry tier.

What are the drawbacks of the 9th Gen Intel Core i9-9900X?

Not the best fit for: Buyers needing the highest core counts, the i9-9920X, 9940X, and higher-tier X-series chips offer more cores on the same platform.

Compare and read more