CPU Comparison
Intel Core i9-7980XE vs Intel Core i9-9820X
A side-by-side comparison of specs, performance and value. 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 Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Very strong multi-threaded throughput suited to content creation and scientific calculations.
Strong multi‑threaded performance in content creation workloads, though 12‑ and 14‑core X‑Series parts and newer Ryzen 9/Threadripper models pull ahead in heavily parallel tasks.
Gaming
Playable at high frame rates in modern titles, but typically behind newer gaming-focused CPUs in single-threaded performance.
Still capable for 60+ FPS in most modern titles at high settings, but newer mainstream and HEDT CPUs often deliver better minimums and efficiency.
Virtualization
Plentiful cores and PCIe lanes make it excellent for running multiple VMs and storage/network add-ins.
Excellent for running several VMs simultaneously thanks to 10 cores and quad‑channel memory, but platform is now end‑of‑life with no upgrade path beyond LGA2066.
Efficiency
High power consumption relative to modern alternatives; efficiency lags newer platforms.
High 165 W TDP and 14 nm process mean significantly more power draw than modern 10‑core designs for similar or better performance.
Specialized Performance
AI / ML
- No dedicated NPUs; relies on AVX-512 for vectorized inference
- Suitable for small-scale experimentation and older models on CPU
- No dedicated AI or matrix acceleration hardware.
- Can handle CPU‑based inference and small models, but not competitive with modern NPUs or GPUs for serious AI workloads.
Content Creation
Gaming
- 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
- Solid 60+ FPS experience in most AAA games at 1440p with a modern GPU.
- High single‑core boost helps with CPU‑bound titles and high‑refresh gaming.
- Newer mainstream and HEDT CPUs often deliver better 1% lows and efficiency.
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 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
Cons
- 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
Pros
- 10 cores and 20 threads for multi‑threaded workloads.
- 44 PCIe 3.0 lanes for multi‑GPU and NVMe arrays.
- Quad‑channel DDR4‑2666 up to 128 GB.
- Unlocked multiplier with granular overclocking controls.
- Turbo Boost Max 3.0 favors best cores for lightly‑threaded tasks.
- Good used‑market value for I/O‑heavy builds.
Cons
- High 165 W TDP and relatively low efficiency versus modern CPUs.
- 14 nm process shows its age in power and clock scaling.
- No integrated graphics; discrete GPU required.
- Discontinued platform with no upgrade path beyond LGA2066/X299.
- Newer mainstream and HEDT CPUs often outperform it per dollar and per watt.
Competitors & Alternatives
Intel Core i9-7980XE
- AMD Ryzen Threadripper 1950XRival
Workstation
- AMD Ryzen Threadripper 1920XRival
Workstation
- AMD Ryzen Threadripper 2950XRival
Workstation
- AMD Ryzen 9 3950XRival
Creator
- Compare head-to-headIntel Core i9-9980XERival
Workstation
- AMD Ryzen Threadripper 2970WXAlt
Higher core counts for workstation workloads.
- AMD Ryzen 9 5950XAlt
Much higher efficiency and strong multi-core performance.
Newer X-series HEDT with refinements and more PCIe lanes.
Compare head-to-head- AMD Ryzen Threadripper Pro 3955WXAlt
Pro-grade platform with more memory channels and I/O.
Strong single- and multi-core performance on a current mainstream platform.
Compare head-to-head
Intel Core i9-9820X
- AMD Ryzen Threadripper 1950XRival
HEDT
- AMD Ryzen Threadripper 2920XRival
HEDT
- RivalCompare head-to-head
- RivalCompare head-to-head
- AMD Ryzen 9 3900XRival
High-End Desktop
Same LGA2066 platform with 12 cores and slightly better multi‑threaded performance if you’re already on X299.
Compare head-to-head- AMD Ryzen Threadripper 2950XAlt
Much higher core count and memory bandwidth for serious workstation use, though more expensive and power‑hungry.
Better gaming and single‑thread performance on a mainstream platform, but fewer PCIe lanes and memory channels.
Compare head-to-headModern hybrid architecture with strong gaming and creator performance, but again with fewer I/O lanes than X299.
Compare head-to-head
Our Verdict on Each
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.
Best for: Secondary workstation or used-market build needing lots of PCIe lanes and cores on a budget
Read the full reviewA capable 10‑core HEDT processor with strong I/O and multi‑threaded performance, but outclassed in efficiency and value by newer mainstream and HEDT platforms.
Best for: Used or clearance HEDT builds where 44 PCIe lanes and quad‑channel memory are critical and platform cost is very low.
Read the full reviewFrequently Asked Questions
Do Intel Core i9-7980XE and Intel Core i9-9820X use the same socket?
No. They use different sockets (Intel Core i9-7980XE: LGA2066, Intel Core i9-9820X: FCLGA2066), so each needs a compatible motherboard.
Which has more cores?
The Intel Core i9-7980XE has the most cores. Core counts: Intel Core i9-7980XE (18 cores), Intel Core i9-9820X (10 cores).