Intel Core i7 7800X vs i5 8600K

We compared two 6-core desktop CPUs: the 3.5 GHz Intel Core i7 7800X against the 3.6 GHz i5 8600K. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

Review

General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of electricity consumption
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 8600K and 7800X
Advantages of Intel Core i7 7800X
  • Supports quad-channel memory
  • Around 37.87 GB/s (91%) higher theoretical memory bandwidth
Advantages of Intel Core i5 8600K
  • Consumes up to 32% less energy than the Core i7 7800X – 95 vs 140 Watt
  • Newer - released 5-months later
  • Includes an integrated GPU Intel UHD Graphics 630
  • 7% higher Turbo Boost frequency (4.3 GHz vs 4 GHz)
  • Has 1 MB larger L3 cache size

Benchmarks

Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
7440
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
12967
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
6623
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Specifications

Full technical specification of Intel Core i7 7800X and i5 8600K

General

Vendor Intel Intel
Released May 30, 2017 October 5, 2017
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Skylake Coffee Lake
Model number i7-7800X i5-8600K
Socket LGA-2066 LGA-1151
Integrated GPU No UHD Graphics 630

Performance

Cores 6 6
Threads 12 6
Base Frequency 3.5 GHz 3.6 GHz
Turbo Boost Frequency 4 GHz 4.3 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 35x 36x
Bus Bandwidth 8 GT/s 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 1MB (per core) 256K (per core)
L3 Cache 8MB (shared) 9MB (shared)
Unlocked Multiplier Yes Yes

Power

Fabrication process 14 nm 14 nm
TDP 140 W 95 W
Max. temperature 100°C 100°C

iGPU

Integrated Graphics - Intel UHD Graphics 630
GPU Base Clock - 350 MHz
GPU Boost Clock - 1150 MHz
Shading Units - 192
TMUs - 24
ROPs - 3
Execution Units - 24
TGP - 15 W
Max. Resolution - 4096x2304 - 60 Hz
iGPU FLOPS
0.38 TFLOPS

Memory support

Memory types DDR4-2400 DDR4-2666
Memory Size 128 GB 128 GB
Max. Memory Channels 4 2
Max. Memory Bandwidth 79.47 GB/s 41.6 GB/s
ECC Support No No

Misc

Official site Intel Core i7 7800X official page Intel Core i5 8600K official page
PCI Express Version 3.0 3.0
PCI Express Lanes 28 16
Extended instructions SSE4.1, SSE4.2, AVX-2, AVX-512 SSE4.1, SSE4.2, AVX-2

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Comments

So which CPU will you choose: Intel Core i5 8600K or i7 7800X?
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