Intel Core i7 7800X vs i7 12700K

We compared two desktop CPUs: the 3.5 GHz Intel Core i7 7800X with 6-cores against the 3.6 GHz i7 12700K with 12-cores. 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 12700K and 7800X
Advantages of Intel Core i7 7800X
  • Supports quad-channel memory
  • Around 2.67 GB/s (3%) higher theoretical memory bandwidth
Advantages of Intel Core i7 12700K
  • Newer - released 4-years and 6-months later
  • Has 17 MB larger L3 cache size
  • Has 6 more physical cores
  • 95% faster in a single-core Geekbench v5 test - 2096 vs 1075 points
  • Newer PCI Express version – 5.0
  • More modern manufacturing process – 10 versus 14 nanometers
  • 25% higher Turbo Boost frequency (5 GHz vs 4 GHz)
  • Includes an integrated GPU Intel UHD Graphics 770
  • Consumes up to 11% less energy than the Core i7 7800X – 125 vs 140 Watt

Benchmarks

Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
23197
Passmark CPU (Single-Core)
4074
Passmark CPU (Multi-Core)
34520
Geekbench 5 (Single-Core)
2112
Geekbench 5 (Multi-Core)
15652
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Specifications

Full technical specification of Intel Core i7 7800X and i7 12700K

General

Vendor Intel Intel
Released May 30, 2017 October 27, 2021
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Skylake Alder Lake-S
Model number i7-7800X i7-12700K
Socket LGA-2066 LGA-1700
Integrated GPU No UHD Graphics 770

Performance

Cores 6 12
Threads 12 20
Base Frequency 3.5 GHz 3.6 GHz
Turbo Boost Frequency 4 GHz 5 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 35x 36x
Bus Bandwidth 8 GT/s -
L1 Cache 64K (per core) 64K (per core)
L2 Cache 1MB (per core) 12MB (shared)
L3 Cache 8MB (shared) 25MB (shared)
Unlocked Multiplier Yes Yes

Power

Fabrication process 14 nm 10 nm
TDP 140 W 125 W
Max. temperature 100°C 100°C

iGPU

Integrated Graphics - Intel UHD Graphics 770
GPU Base Clock - 300 MHz
GPU Boost Clock - 1500 MHz
Shading Units - 256
TMUs - 16
ROPs - 8
Execution Units - 32
TGP - 15 W
iGPU FLOPS
0.78 TFLOPS

Memory support

Memory types DDR4-2400 DDR5-4800, DDR4-3200
Memory Size 128 GB 128 GB
Max. Memory Channels 4 2
Max. Memory Bandwidth 79.47 GB/s 76.8 GB/s
ECC Support No Yes

Misc

Official site Intel Core i7 7800X official page Intel Core i7 12700K official page
PCI Express Version 3.0 5.0
PCI Express Lanes 28 20
Extended instructions SSE4.1, SSE4.2, AVX-2, AVX-512 -

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Comments

So which CPU will you choose: Intel Core i7 12700K or i7 7800X?
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