Home > CPU Comparison > Core i7 7700K or Core i7 6700K: what's better?

Intel Core i7 7700K vs i7 6700K

33 out of 100
Intel Core i7 7700K
VS
31 out of 100
Intel Core i7 6700K
Intel Core i7 7700K
Intel Core i7 6700K

We compared two 4-core desktop CPUs: the 4.2 GHz Intel Core i7 7700K against the 4.0 GHz i7 6700K. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments

Review

General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
The "iGPU" and "Power Efficiency" have a minor impact on the NanoReview Score for desktop CPU.
NanoReview Final Score
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Value for money (Beta)

Global average CPU prices are used by default! For better accuracy, enter your current prices and click “Calculate".
Currency
VS
31.5
(Mediocre)
Value Index
8.8
(Bad)

Key Differences

What are the key differences between 6700K and 7700K
Advantages of Intel Core i7 7700K
  • Newer - released 1 year and 5 months later
  • 7% higher Turbo Boost frequency (4.5 GHz vs 4.2 GHz)
  • Around 1.66 GB/s (5%) higher theoretical memory bandwidth

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core i7 7700K
vs
Core i7 6700K

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Submit your benchmark results

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
File compression 456.6 MB/sec 428.4 MB/sec
Clang compilation 37.9 Klines/sec 35.7 Klines/sec
HTML 5 Browser 115.7 pages/sec 116.8 pages/sec
PDF Renderer 162.6 Mpixels/sec 168.3 Mpixels/sec
Text processing 152.5 pages/sec 152.1 pages/sec
Background blur 28.7 images/sec 28 images/sec
Photo processing 53.4 images/sec 50.9 images/sec
Ray tracing 7.57 Mpixels/sec 6.53 Mpixels/sec
Sources: GeekBench [1], [2] – 841 & 1195 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 30.7 GOps/sec 28.2 GOps/sec
Floating point math 18.8 GOps/sec 17.4 GOps/sec
Find prime numbers 31M Primes/sec 30M Primes/sec
Random string sorting 17.2M Strings/sec 15.8M Strings/sec
Data encryption 3.3 GBytes/sec 3.1 GBytes/sec
Data compression 136.7 MBytes/sec 125.7 MBytes/sec
Physics 655 Frames/sec 636 Frames/sec
Extended instructions 9B Matrices/sec 8.3B Matrices/sec
Sources: PassMark [3], [4] – 14773 & 19003 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core i7 7700K +5%
85.49
Core i7 6700K
81.55

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 3.5 PPW 3.1 PPW
Geekbench 6 Multi / Watt 58.1 PPW 55.7 PPW
Passmark CPU Mark / Watt 105.9 PPW 98.2 PPW
Blender / Watt 0.94 PPW 0.9 PPW
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Recent User Tests

The latest benchmark tests that have been submitted by users
Intel Core i7 7700K
DateBenchmarkResult
📘 2024-11-17 (Pavol K)Cinebench 202467 / 322
Add View all (1)
Intel Core i7 6700K
DateBenchmarkResult
📘 2025-11-08 (CRSTN)Cinebench 202467 / 328
📘 2024-09-27 (A)Cinebench 202454 / 279
Add View all (2)

Specifications

Full technical specification of Intel Core i7 7700K and i7 6700K

General

Vendor Intel Intel
Released January 3, 2017 August 5, 2015
Type Desktop Desktop
Instruction Set x86-64 x86-64
Codename Kaby Lake Skylake
Model number i7-7700K i7-6700K
Integrated GPU HD Graphics 630 HD Graphics 530
Successor - Intel Core Ultra 7 270K Plus - Intel Core Ultra 7 270K Plus

CPU

Performance Cores
P-Cores 4 4
P-Threads 8 8
Base Frequency (P) 4.2 GHz 4.0 GHz
Turbo Boost Frequency (P) 4.5 GHz 4.2 GHz
Total
Total Cores 4 4
Total Threads 8 8
Bus Frequency 42 MHz 100 MHz
Multiplier 100x 40x
Bus Bandwidth 8 GT/s 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 256K (per core) 256K (per core)
L3 Cache 8MB (shared) 8MB (shared)
Unlocked Multiplier Yes Yes

Package

Transistors - 1.75 billions
Fabrication Process 14 nm 14 nm
TDP (PL1) 91 W 91 W
Socket LGA-1151 LGA-1151
Peak Temperature 100°C -
Desktop CPU ranking (170th and 178th place)

iGPU

Integrated Graphics Intel HD Graphics 630 Intel HD Graphics 530
GPU Base Clock 350 MHz -
GPU Boost Clock 1150 MHz 1150 MHz
Shading Units 192 -
TMUs 24 -
ROPs 3 -
Execution Units 24 -
TGP 15 W -
iGPU FLOPS
Core i7 7700K
0.4 TFLOPS
Core i7 6700K
n/a
See: Intel UHD Graphics 630 benchmarks

Memory Support

Memory Types - DDR4-2400
- DDR3L-1600		 - DDR4-2133
- DDR3L-1600
Max. Memory Size 64 GB 64 GB
Memory Channels 2 2
Max. Memory Bandwidth 35.76 GB/s 34.1 GB/s
ECC Support No No

Misc

Official Site Intel Core i7 7700K official page Intel Core i7 6700K official page
PCI Express Version 3.0 3.0
PCI Express Lanes 16 16

Cast your vote

Choose between two processors
74 (43.8%)
95 (56.2%)
Total votes: 169

Competitors

1. Intel Core i7 6700K vs Intel Core i5 12600K
2. Intel Core i7 6700K vs Intel Core i5 8400
3. Intel Core i7 7700K vs Intel Core i5 12400F
Compare other CPUs (460+)

Comments

So which CPU will you choose: Intel Core i7 6700K or i7 7700K?
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