Intel Core i7 8700 vs i7 7800X

We compared two 6-core desktop CPUs: the 3.2 GHz Intel Core i7 8700 against the 3.5 GHz i7 7800X. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
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 7800X and 8700
Advantages of Intel Core i7 8700
  • Consumes up to 54% less energy than the Core i7 7800X – 65 vs 140 Watt
  • Has 4 MB larger L3 cache size
  • 15% higher Turbo Boost frequency (4.6 GHz vs 4 GHz)
  • Newer - released 5-months later
  • Includes an integrated GPU Intel UHD Graphics 630
Advantages of Intel Core i7 7800X
  • Unlocked multiplier
  • Supports quad-channel memory
  • Around 37.87 GB/s (91%) higher theoretical memory bandwidth


Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
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Full technical specification of Intel Core i7 8700 and i7 7800X


Vendor Intel Intel
Released October 5, 2017 May 30, 2017
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Coffee Lake Skylake
Model number i7-8700 i7-7800X
Socket LGA-1151 LGA-2066
Integrated GPU UHD Graphics 630 No


Cores 6 6
Threads 12 12
Base Frequency 3.2 GHz 3.5 GHz
Turbo Boost Frequency 4.6 GHz 4 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 32x 35x
Bus Bandwidth 8 GT/s 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 256K (per core) 1MB (per core)
L3 Cache 12MB (shared) 8MB (shared)
Unlocked Multiplier No Yes


Fabrication process 14 nm 14 nm
TDP 65 W 140 W
Max. temperature 100°C 100°C


Integrated Graphics Intel UHD Graphics 630 -
GPU Base Clock 350 MHz -
GPU Boost Clock 1200 MHz -
Shading Units 192 -
TMUs 24 -
ROPs 3 -
Execution Units 24 -
TGP 15 W -
Max. Resolution 4096x2304 - 60 Hz -

Memory support

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


Official site Intel Core i7 8700 official page Intel Core i7 7800X official page
PCI Express Version 3.0 3.0
PCI Express Lanes 16 28
Extended instructions SSE4.1, SSE4.2, AVX-2 SSE4.1, SSE4.2, AVX-2, AVX-512

Cast your vote

Choose between two processors
2 (33.3%)
4 (66.7%)
Total votes: 6


So which CPU will you choose: Intel Core i7 7800X or i7 8700?