Intel Core i7 6900K vs Intel Core i9 7900X

VS

We compared two desktop CPUs: Intel Core i7 6900K with 8 cores 3.2GHz and Intel Core i9 7900X with 10 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i7 6900K 's Advantages

Larger L3 cache size (20MB vs 14MB)

Intel Core i9 7900X 's Advantages

Released 1 years late

Higher specification of memory (DDR4-2666 vs DDR4-2133)

Larger memory bandwidth (79.47GB/s vs 76.8GB/s)

Higher base frequency (3.3GHz vs 3.2GHz)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i7 6900K

1151

Intel Core i9 7900X +4%

1203

Cinebench R23 Multi Core

Intel Core i7 6900K

11326

Intel Core i9 7900X +4%

11804

Geekbench 6 Single Core

Intel Core i7 6900K

1286

Intel Core i9 7900X +2%

1323

Geekbench 6 Multi Core

Intel Core i7 6900K

7470

Intel Core i9 7900X +14%

8536

Geekbench 5 Single Core

Intel Core i7 6900K

961

Intel Core i9 7900X +17%

1127

Geekbench 5 Multi Core

Intel Core i7 6900K

7327

Intel Core i9 7900X +39%

10189

Passmark CPU Single Core

Intel Core i7 6900K

2310

Intel Core i9 7900X +10%

2556

Passmark CPU Multi Core

Intel Core i7 6900K

14258

Intel Core i9 7900X +47%

20991

Intel Core i7 6900K

VS

Intel Core i9 7900X

General Parameters

May 2016

Release Date

May 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Broadwell E

Core Architecture

Skylake

i7-6900K

Processor Number

i9-7900X

LGA-2011-3

Socket

LGA-2066

N/A

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-2011-3

Socket

LGA-2066

140 W

Power Consumption

140 W

-

Peak Operating Temperature

95 °C

CPU Performance

8

Performance Cores

10

16

Performance Core Threads

20

3.2 GHz

Performance Core Base Frequency

3.3 GHz

3.7 GHz

Performance Core Turbo Frequency

4.3 GHz

8

Total Core Count

10

16

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

32x

Multiplier

33x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

1 MB per core

20 MB shared

L3 Cache

14 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2133

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

4

76.8 GB/s

Max Memory Bandwidth

79.47 GB/s

No

ECC Memory Support

No

Miscellaneous

Intel Core i7 6900K

Official Website

Intel Core i9 7900X

3.0

PCIe Version

3.0

40

PCIe Lanes

44

-

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2, AVX-512

Related CPU Comparisons

1

AMD Ryzen 7 7800X3D vs Intel Core i7 6900K

2

Intel Core i7 6900K vs AMD Ryzen 9 7950X

3

Intel Core i7 5960X vs Intel Core i7 6900K

4

Intel Core i9 12900F vs Intel Core i7 6900K

5

Intel Core i7 6900K vs AMD Ryzen 7 Pro 4750G

6

AMD Ryzen 7 5700G vs Intel Core i7 6900K

7

Intel Core i7 6900K vs Intel Core i9 7960X

8

Intel Core i9 11900F vs Intel Core i9 7900X

9

Intel Core i7 6900K vs Intel Core i7 6800K

10

Intel Core i7 6900K vs AMD Ryzen 5 2600X