Quick Verdict
A flagship HEDT chip with massive multi-threaded throughput and abundant I/O, but high power draw and aging platform make it a specialist choice today.
Overview
Launch
2017
Status
DiscontinuedGeneration
Core X-Series (HEDT)
Market
High-End Desktop
The Intel Core i9-7980XE is an 18-core, 36-thread high-end desktop processor built on the Skylake-X architecture, featuring quad-channel DDR4-2666 memory, 44 PCIe 3.0 lanes, and a 165 W TDP for workstation-class workloads.
The Core i9-7980XE delivers 18 cores, 36 threads, quad-channel DDR4-2666 memory, and 44 PCIe 3.0 lanes, targeting workstations that need high I/O and parallel throughput.
Specifications
Performance
Very strong multi-threaded throughput suited to content creation and scientific calculations.
Plentiful cores and PCIe lanes make it excellent for running multiple VMs and storage/network add-ins.
Playable at high frame rates in modern titles, but typically behind newer gaming-focused CPUs in single-threaded performance.
High power consumption relative to modern alternatives; efficiency lags newer platforms.
- •Capable of high-refresh gaming when paired with strong GPUs
- •Single-core performance is lower than contemporary gaming-focused CPUs
- •Platform lacks upgrade path to newer CPUs
- •No dedicated NPUs; relies on AVX-512 for vectorized inference
- •Suitable for small-scale experimentation and older models on CPU
Architecture
14nm+
Process Node
Skylake-X
Codename
18C / 36T
Core Config
24.75 MB
L3 Cache
165 W
TDP
Architecture Overview
Skylake-X is a high-end desktop derivative of the Skylake server architecture, scaled to up to 18 cores with quad-channel memory and extensive I/O.
CPU Design
18 physical cores with Hyper-Threading (2-way SMT), a mesh-like interconnect, and per-core L2 cache increased to 1 MB.
Memory Subsystem
Quad-channel DDR4 controller officially supporting up to DDR4-2666 for increased bandwidth.
PCIe & I/O
44 PCIe 3.0 lanes routed directly from the CPU for GPUs, NVMe, and high-speed adapters.
Overclocking
Fully unlocked multiplier and extensive voltage/frequency controls for enthusiasts.
- Higher core count (18 vs. 10)
- Increased per-core L2 cache to 1 MB
- Higher official turbo frequencies
- AVX-512 vector extensions
Key Highlights
- 18 cores and 36 threads for heavy parallel workloads
- 44 PCIe 3.0 lanes enable multiple GPUs and NVMe drives
- Quad-channel DDR4-2666 memory
- AVX-512 support for specialized workloads
- Unlocked multiplier for overclocking
- Strong multi-threaded performance in its era
- High power draw and thermal density
- No integrated graphics
- LGA2066/X299 platform effectively discontinued
- Lower per-core performance than newer generations
- DDR4-only memory support
History
The Core i9-7980XE arrived in September 2017 as Intel’s response to AMD’s first-generation Ryzen Threadripper, pushing core counts to new heights in the HEDT segment. It introduced Skylake-X features like increased per-core L2 cache, AVX-512 support, and Turbo Boost Max Technology 3.0.
Aimed at creators and workstation users, the 18-core chip delivered massive parallel throughput but demanded robust cooling and power delivery. Over time, the X299 platform saw diminishing investment from Intel and motherboard vendors as newer generations shifted focus, leaving the 7980XE as a high-water mark for an earlier HEDT era.
Improvements over Previous Generation
- Higher core count (18 vs. 10)
- Increased per-core L2 cache to 1 MB
- Higher official turbo frequencies
- AVX-512 vector extensions
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Secondary workstation or used-market build needing lots of PCIe lanes and cores on a budget
Avoid if…
- Building a new, long-lived primary workstation
- Prioritizing power efficiency and quiet operation
- Seeking modern platform support and upgrade paths
Use Cases
Interesting Facts
Launched at $1,999 as the flagship HEDT CPU in September 2017.
First Intel HEDT CPU to reach 18 cores in the consumer-branded lineup.
Skylake-X increased per-core L2 cache to 1 MB and reconfigured L3 to be non-inclusive.
Supports Intel Turbo Boost Max Technology 3.0 to favor the best cores.
44 PCIe 3.0 lanes exceed mainstream desktop counts even in later generations.
People Also Ask
What is the core count of the Intel Core i9-7980XE?
18 cores and 36 threads.
Does the Intel Core i9-7980XE have integrated graphics?
No; it requires a discrete GPU.
What socket does the Intel Core i9-7980XE use?
LGA2066 on the X299 platform.
How many PCIe lanes does the i9-7980XE have?
44 PCIe 3.0 lanes from the CPU.
What is the TDP of the Intel Core i9-7980XE?
165 W.
What memory does the Intel Core i9-7980XE support?
Quad-channel DDR4 up to 2666 MHz.
Is the Intel Core i9-7980XE unlocked for overclocking?
Yes; it supports multiplier overclocking.
What is the L3 cache size of the i9-7980XE?
24.75 MB.
Does the i9-7980XE support AVX-512?
Yes; Skylake-X includes AVX-512 instructions.
When was the Intel Core i9-7980XE released?
September 25, 2017.
Frequently Asked Questions
Can the Intel Core i9-7980XE run DDR5 memory?
No; it supports DDR4 memory only.
Is the Intel Core i9-7980XE still good in 2026?
It remains capable for heavily threaded workstation and creator workloads, especially on the used market, but newer platforms offer better efficiency and support.
What motherboards work with the Intel Core i9-7980XE?
X299 chipset motherboards with the LGA2066 socket.
Does the Intel Core i9-7980XE support ECC memory?
ECC support depends on the specific motherboard implementation; the CPU itself is typically used with unbuffered DDR4.
What is the base and boost clock of the i9-7980XE?
2.6 GHz base and up to 4.4 GHz boost via Turbo Boost Max Technology 3.0.
Is the Intel Core i9-7980XE better for gaming than Threadripper 1950X?
Gaming performance is competitive in its era, but both are outperformed by modern gaming-focused CPUs.
Can I run multiple GPUs with the i9-7980XE?
Yes; 44 PCIe 3.0 lanes allow multi-GPU configurations along with NVMe storage.
Does the i9-7980XE require liquid cooling?
Liquid cooling is recommended for sustained loads and overclocking; high-end air cooling may suffice for stock operation but runs warm.
What is Intel Turbo Boost Max 3.0 on the i9-7980XE?
A feature that identifies the best cores and directs lightweight, single-threaded workloads to them for higher turbo frequencies.
Is the Intel Core i9-7980XE compatible with Windows 11?
The CPU itself supports the instructions needed, but compatibility also depends on TPM 2.0 and UEFI support on the motherboard.