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Intel Core i9-7980XE vs Intel Core i5-8400

Last updated: 2026-07-03

Table of Contents

Summary
Benchmarks
Specifications
User Reviews
Popular Comparisons

Summary

Benchmarks

Performance Overview
Average performance across multiple benchmarks

Single-core performance

Rank 1 - 100 %

Intel Core i9-7980XE

Rank 2 - 94 %

Intel Core i5-8400

Multi-core performance

Rank 1 - 100 %

Intel Core i9-7980XE

Rank 2 - 31 %

Intel Core i5-8400

Geekbench 6 Single-Core
Single-core performance

18C / 36T · 4.20 GHz

1,394

6C / 6T · 4.00 GHz

1,322

Geekbench 6 Multi-Core
Multi-core performance

18C / 36T · 3.50 GHz

11,708

6C / 6T · 3.80 GHz

4,814

Cinebench R20 Single-Core
Single-core performance

18C / 36T · 4.20 GHz

446 cb

6C / 6T · 4.00 GHz

411 cb

Geekbench 5, 64bit Single-Core
Single-core performance

18C / 36T · 4.20 GHz

1,121

6C / 6T · 4.00 GHz

1,053

Cinebench R20 Multi-Core
Multi-core performance

18C / 36T · 3.50 GHz

7,671 cb

6C / 6T · 3.80 GHz

2,291 cb

Geekbench 5, 64bit Multi-Core
Multi-core performance

18C / 36T · 3.50 GHz

16,495

6C / 6T · 3.80 GHz

4,608

Blender 2.81 (bmw27)
Multi-core performance

18C / 36T · 3.50 GHz

77.0 s

6C / 6T · 3.80 GHz

400.9 s

CPU-Z Benchmark 17 Multi-Core
Multi-core performance

18C / 36T · 2.60 GHz

10,563

6C / 6T · 2.80 GHz

2,482

Cinebench R15 (Single-Core)
Single-core performance

18C / 36T · 4.20 GHz

184 cb

6C / 6T · 4.00 GHz

163 cb

Cinebench R15 (Multi-Core)
Multi-core performance

18C / 36T · 3.50 GHz

3,455 cb

6C / 6T · 3.80 GHz

925 cb

More benchmarks

Cinebench 2026 (ST)
218 entries

Cinebench 2026 (MC)
219 entries

Cinebench 2024 (SC)
427 entries

Cinebench 2024 (MC)
422 entries

Cinebench R23 (SC)
690 entries

Cinebench R23 (MC)
665 entries

Geekbench 6 (SC)
1,989 entries

Geekbench 6 (MC)
1,927 entries

Cinebench R20 (SC)
666 entries

Geekbench 5 (SC)
2,512 entries

Cinebench R20 (MC)
615 entries

Geekbench 5 (MC)
2,483 entries

FP32 SP (iGPU)
2,219 entries

3DMark Timespy (iGPU)
534 entries

Blender 3.1 Benchmark
213 entries

PassMark CPU-Mark
2,504 entries

Blender 2.81 (bmw27)
190 entries

CPU-Z Benchmark 17 (SC)
250 entries

CPU-Z Benchmark 17 (MC)
751 entries

V-Ray CPU-Render
251 entries

Cinebench R15 (SC)
1,113 entries

Cinebench R15 (MC)
1,110 entries

Geekbench 3 (SC)
945 entries

Geekbench 3 (MC)
941 entries

Cinebench R11.5 (SC)
826 entries

Cinebench R11.5 (MC)
837 entries

Cinebench R11.5 iGPU
383 entries

Specifications

At a glance

Wischen	Intel Core i9-7980XE	Intel Core i5-8400
Family	Intel Core i9 (81)	Intel Core i5 (336)
CPU group	Intel Core i 7000X (9)	Intel Core i 8000 (20)
Architecture	Skylake X	Coffee Lake S
Technology	14 nm	14 nm
Segment	Desktop	Desktop
Socket	LGA 2066	LGA 1151-2
Predecessor		Intel Core i5-7400
Successor	Intel Core i9-9980XE	Intel Core i5-9400

CPU Cores and Base Frequency

Wischen	Intel Core i9-7980XE	Intel Core i5-8400
CPU Cores / Threads	18 / 36	6 / 6
Hyperthreading / SMT	✓	✗
Core architecture	normal	normal
Cores:	18x	6x
Frequency:	2.60 GHz	2.80 GHz
Turbo (1 Core):	4.20 GHz	4.00 GHz
Turbo (All Cores):	3.50 GHz	3.80 GHz
L2-Cache
L3-Cache	25.00 MB	9.00 MB
Overclocking	✓	✗

Integrated graphics (iGPU)

Wischen	Intel Core i9-7980XE	Intel Core i5-8400
GPU name	no iGPU	Intel UHD Graphics 630
GPU frequency		0.35 - 1.15 GHz
CUs / Shader	/	24 / 192
Raytracing	✗	✗
Max. displays		3
Max. GPU Memory		64 GB
Technology		14 nm
Release date		Q4/2017

NPU AI performance

Wischen	Intel Core i9-7980XE	Intel Core i5-8400
AI hardware
AI specifications
NPU + CPU + iGPU

Memory & PCIe

Wischen	Intel Core i9-7980XE	Intel Core i5-8400
Memory	DDR4-2666 (85.4 GB/s)	DDR4-2666 (42.7 GB/s)
Max. Memory	128 GB	128 GB
Memory channels	4	2
ECC	No	No
PCIe	3.0 x 44	3.0 x 16
PCIe Bandwidth	43.3 GB/s	15.8 GB/s

Thermal Management

Wischen	Intel Core i9-7980XE	Intel Core i5-8400
TDP	165 W	65 W
TDP (PL2)
TDP up
TDP down
T. junction max.

Technical details

Wischen	Intel Core i9-7980XE	Intel Core i5-8400
Chip design	Monolithic	Monolithic
AES-NI	✓	✓
Operating systems	Windows 10, Linux	Windows 10, Windows 11, Linux
Instruction set	x86-64 (64 bit)	x86-64 (64 bit)
ISA extensions	SSE4.1, SSE4.2, AVX2, AVX-512	SSE4.1, SSE4.2, AVX2
Release date	Q4/2017	Q4/2017
Release price	1999 $	260 $
Documents	Technical data sheet	Technical data sheet

User Reviews

Your rating

Here you can rate one or both of the processors. The average rating of Intel Core i9-7980XE is 4.6 stars (11 ratings), while Intel Core i5-8400 has received 4.1 stars (77 ratings).

Click on the stars to rate one or both processors.

Intel Core i9-7980XE
18C / 36T · 2.60 - 4.20 GHz

★★★★★

Intel Core i5-8400
6C / 6T · 2.80 - 4.00 GHz

★★★★★