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Intel Core I9 7900X (7th Gen) processor
Intel

7th Gen Intel Core i9-7900X

View on NeweggView on intel.com
Boost/Base Clock:
4.3 GHz / 3.3 GHz
Core/Thread Count:
10 Core / 20 Thread
Cache:
13.75MB L3 + 10MB L2 + 640KB L1
TDP:
140 Watts
CPU Process Node:
14 Nanometers
CPU Socket:
FCLGA2066
CPU Series:
Skylake-X, 7th 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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7th Gen Intel Core i9-7900X Review

The 7th Gen Intel Core i9-7900X was Intel's original Skylake-X HEDT flagship, a 10-core, 20-thread processor running a 3.3 GHz base clock that boosts to 4.3 GHz within a 140 Watt TDP on the LGA2066 socket.

As the launch chip for Intel's first-generation X-series HEDT platform on LGA2066, this processor was the direct predecessor to the later 9th and 10th Gen X-series refreshes.

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 i9-7900X in Terms of Performance

With 10 cores and 20 threads, this chip targeted prosumer content-creation and workstation workloads at launch, establishing Intel's original LGA2066 HEDT platform that later 9th and 10th Gen X-series chips would build on.

Benchmarks

As Intel's original Skylake-X HEDT flagship, this chip's genuine 10-core, 20-thread performance was class-leading at launch, though later Cascade Lake-X refreshes on the same platform offered meaningful clock speed improvements.

Our verdict

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

Best for

  • Buyers specifically wanting Intel's original Skylake-X HEDT flagship on the LGA2066 platform

Not for

  • Buyers with access to later 9th or 10th Gen X-series chips, those offer meaningful clock speed improvements on the same platform

Specifications

What these specs mean

Identity

BrandIntel
Model Number7900X
Product FamilyCore i9
Release Year2017
SegmentHEDT

Cores and threads

Core Count10 cores
Thread Count20 threads
SMT SupportYes

Clocks

Base Clock3.3 GHz
Boost Clock4.5 GHz

Cache

L2 Cache10 MB
L3 Cache13.75 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

TDP140 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 7th Gen Intel Core i9-7900X?

The 7th Gen Intel Core i9-7900X has a 3.3 GHz base and 4.5 GHz boost clock, 13.75 MB of L3 cache and a 140 W TDP. It has no integrated graphics, so it needs a graphics card. Socket: FCLGA2066.

Will the 7th Gen Intel Core i9-7900X work with my current setup?

The 7th Gen Intel Core i9-7900X 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 7th Gen Intel Core i9-7900X best suited to?

Best suited to: Buyers specifically wanting Intel's original Skylake-X HEDT flagship on the LGA2066 platform.

What are the drawbacks of the 7th Gen Intel Core i9-7900X?

Not the best fit for: Buyers with access to later 9th or 10th Gen X-series chips, those offer meaningful clock speed improvements on the same platform.

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