Intel Core i7 7700K vs i7 6900K: performance comparison
VS
Intel Core i7 7700K
Intel Core i7 6900K
We compared two desktop CPUs: the 4.2 GHz Intel Core i7 7700K with 4-cores against the 3.2 GHz i7 6900K with 8-cores. On this page, you’ll find out which processor has better performance in benchmarks, games and other useful information.
- Review
- Differences
- Performance
- Specs
- Comments
Review
General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Core i7 7700K
54
Core i7 6900K
46
Performance
Measure performance when all cores are involved
Core i7 7700K
24
Core i7 6900K
37
Power Efficiency
The efficiency score of electricity consumption
Core i7 7700K
41
Core i7 6900K
39
NanoReview Final Score
Generic CPU rating
Core i7 7700K
40
Core i7 6900K
42
Key Differences
What are the key differences between 6900K and 7700K
Advantages of Intel Core i7 7700K
- Unlocked multiplier
- Consumes up to 35% less energy than the Core i7 6900K – 91 vs 140 Watt
- 22% higher Turbo Boost frequency (4. 5 GHz vs 3.7 GHz)
- 17% faster in a single-core Geekbench v5 test — 1135 vs 968 points
- Newer — released 8-months later
- Includes an integrated GPU Intel HD Graphics 630
Advantages of Intel Core i7 6900K
- Has 12 MB larger L3 cache size
- Has 4 more physical cores
- Supports up to 128 GB DDR4-2133 RAM
- Supports quad-channel memory
Benchmarks
Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Core i7 7700K
1205
Core i7 6900K
n/a
Cinebench R23 (Multi-Core)
Core i7 7700K
5873
Core i7 6900K
n/a
Passmark CPU (Single-Core)
Core i7 7700K
+16%
2717
Core i7 6900K
2344
Passmark CPU (Multi-Core)
Core i7 7700K
9616
Core i7 6900K
+49%
14316
Geekbench 5 (Single-Core)
Core i7 7700K
+17%
1128
Core i7 6900K
966
Geekbench 5 (Multi-Core)
Core i7 7700K
4704
Core i7 6900K
+56%
7322
▶️ Submit your Cinebench R23 result
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Specifications
Full technical specification of Intel Core i7 7700K and i7 6900K
General
Vendor | Intel | Intel |
Released | January 3, 2017 | May 30, 2016 |
Type | Desktop | Desktop |
instruction set | x86-64 | x86-64 |
Codename | Kaby Lake | Broadwell E |
Model number | i7-7700K | i7-6900K |
Socket | LGA-1151 | LGA-2011-3 |
Integrated GPU | HD Graphics 630 | No |
Performance
Cores | 4 | 8 |
Threads | 8 | 16 |
Base Frequency | 4. 2 GHz | 3.2 GHz |
Turbo Boost Frequency | 4.5 GHz | 3.7 GHz |
Bus frequency | 42 MHz | 100 MHz |
Multiplier | 100x | 32x |
Bus Bandwidth | 8 GT/s | — |
L1 Cache | 64K (per core) | 64K (per core) |
L2 Cache | 256K (per core) | 256K (per core) |
L3 Cache | 8MB (shared) | 20MB (shared) |
Unlocked Multiplier | Yes | No |
Fabrication process | 14 nm | 14 nm |
TDP | 91 W | 140 W |
Max. temperature | 100°C | — |
Integrated Graphics | Intel HD 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 | 4096×2304 — 60 Hz | — |
iGPU FLOPS
Core i7 7700K
0.44 TFLOPS
Core i7 6900K
n/a
Memory support
Memory types | DDR4-2400, DDR3L-1600 | DDR4-2133 |
Memory Size | 64 GB | 128 GB |
Max. Memory Channels | 2 | 4 |
Max. Memory Bandwidth | 35.76 GB/s | — |
ECC Support | No | No |
Official site | Intel Core i7 7700K official page | Intel Core i7 6900K official page |
PCI Express Version | 3.0 | 3.0 |
PCI Express Lanes | 16 | 40 |
Extended instructions | SSE4. 1, SSE4.2, AVX-2 | — |
Cast your vote
Choose between two processors
Core i7 7700K
2 (50%)
Core i7 6900K
2 (50%)
Total votes: 4
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So which CPU will you choose: Intel Core i7 6900K or i7 7700K?
Name
Message
Intel Core i7-6900k vs Intel Core i7-7700K: What is the difference?
44points
Intel Core i7-6900k
60points
Intel Core i7-7700K
Comparison winner
vs
64 facts in comparison
Intel Core i7-6900k
Intel Core i7-7700K
Why is Intel Core i7-6900k better than Intel Core i7-7700K?
- 1. 52x faster CPU speed?
8 x 3.2GHzvs4 x 4.2GHz - 8 more CPU threads?
16vs8 - 1MB bigger L2 cache?
2MBvs1MB - 12MB bigger L3 cache?
20MBvs8MB - 64GB larger maximum memory amount?
128GBvs64GB - 2 more memory channels?
4vs2 - 0.5MB/core more L3 cache per core?
2.5MB/corevs2MB/core - 190.4 more performance per watt?
242.7vs52.3
Why is Intel Core i7-7700K better than Intel Core i7-6900k?
- 0.5GHz higher turbo clock speed?
4.5GHzvs4GHz - 49W lower TDP?
91Wvs140W - Has integrated graphics?
- 0.05MB/core more L2 cache per core?
0.25MB/corevs0.2MB/core - 10 higher clock multiplier?
42vs32 - Has F16C?
- Has FMA3?
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Price comparison
User reviews
Overall Rating
Intel Core i7-6900k
0 User reviews
Intel Core i7-6900k
0. 0/10
0 User reviews
Intel Core i7-7700K
3 User reviews
Intel Core i7-7700K
5.3/10
3 User reviews
Features
Value for money
No reviews yet
4.0/10
3 votes
Gaming
No reviews yet
6.3/10
3 votes
Performance
No reviews yet
6.3/10
3 votes
Reliability
No reviews yet
5.7/10
3 votes
Energy efficiency
No reviews yet
4.7/10
3 votes
Performance
CPU speed
8 x 3.2GHz
4 x 4.2GHz
The CPU speed indicates how many processing cycles per second can be executed by a CPU, considering all of its cores (processing units). It is calculated by adding the clock rates of each core or, in the case of multi-core processors employing different microarchitectures, of each group of cores.
CPU threads
More threads result in faster performance and better multitasking.
turbo clock speed
4.5GHz
When the CPU is running below its limitations, it can boost to a higher clock speed in order to give increased performance.
Has an unlocked multiplier
✔Intel Core i7-6900k
✔Intel Core i7-7700K
Some processors come with an unlocked multiplier which makes them easy to overclock, allowing you to gain increased performance in games and other apps.
L2 cache
A larger L2 cache results in faster CPU and system-wide performance.
L3 cache
A larger L3 cache results in faster CPU and system-wide performance.
L1 cache
A larger L1 cache results in faster CPU and system-wide performance.
L2 core
0.2MB/core
0.25MB/core
More data can be stored in the L2 cache for access by each core of the CPU.
L3 core
2. 5MB/core
2MB/core
More data can be stored in the L3 cache for access by each core of the CPU.
Benchmarks
PassMark result
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
This benchmark measures the performance of the CPU using multiple threads.
PassMark result (single)
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
This benchmark measures the performance of the CPU using a single thread.
Geekbench 5 result (multi)
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
Geekbench 5 is a cross-platform benchmark that measures a processor’s multi-core performance. (Source: Primate Labs, 2022)
Cinebench R20 (multi) result
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
Cinebench R20 is a benchmark tool that measures a CPU’s multi-core performance by rendering a 3D scene.
Cinebench R20 (single) result
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
Cinebench R20 is a benchmark tool that measures a CPU’s single-core performance by rendering a 3D scene.
Geekbench 5 result (single)
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
Geekbench 5 is a cross-platform benchmark that measures a processor’s single-core performance. (Source: Primate Labs, 2022)
Blender (bmw27) result
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
339.9seconds
The Blender (bmw27) benchmark measures the performance of a processor by rendering a 3D scene. More powerful processors can render the scene in less time.
Blender (classroom) result
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
1117.4seconds
The Blender (classroom) benchmark measures the performance of a processor by rendering a 3D scene. More powerful processors can render the scene in less time.
performance per watt
This means the CPU is more efficient, giving a greater amount of performance for each watt of power used.
Integrated graphics
GPU clock speed
∅
Not applicable
350MHz
The graphics processing unit (GPU) has a higher clock speed.
GPU turbo
∅
Not applicable
1150MHz
When the GPU is running below its limitations, it can boost to a higher clock speed in order to give increased performance.
GPU execution units
∅
Not applicable
A graphics processing unit (GPU) with a greater number of execution units can deliver better graphics.
supported displays
∅
Not applicable
Using multiple displays you can create a larger workspace, making it easier to work across multiple apps.
DirectX version
∅
Not applicable
DirectX is used in games, with newer versions supporting better graphics.
OpenGL version
∅
Not applicable
OpenGL is used in games, with newer versions supporting better graphics.
OpenCL version
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
Some apps use OpenCL to apply the power of the graphics processing unit (GPU) for non-graphical computing. Newer versions introduce more functionality and better performance.
texture mapping units (TMUs)
∅
Not applicable
Unknown. Help us by suggesting a value. (Intel Core i7-7700K)
TMUs take textures and map them to the geometry of a 3D scene. More TMUs will typically mean that texture information is processed faster.
render output units (ROPs)
∅
Not applicable
Unknown. Help us by suggesting a value. (Intel Core i7-7700K)
The ROPs are responsible for some of the final steps of the rendering process, writing the final pixel data to memory and carrying out other tasks such as anti-aliasing to improve the look of graphics.
Memory
RAM speed
2400MHz
2400MHz
It can support faster memory, which will give quicker system performance.
maximum memory bandwidth
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
38.4GB/s
This is the maximum rate that data can be read from or stored into memory.
DDR memory version
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
DDR (Double Data Rate) memory is the most common type of RAM. Newer versions of DDR memory support higher maximum speeds and are more energy-efficient.
memory channels
More memory channels increases the speed of data transfer between the memory and the CPU.
maximum memory amount
The maximum amount of memory (RAM) supported.
bus transfer rate
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
The bus is responsible for transferring data between different components of a computer or device.
Supports ECC memory
✖Intel Core i7-6900k
✖Intel Core i7-7700K
Error-correcting code memory can detect and correct data corruption. It is used when is it essential to avoid corruption, such as scientific computing or when running a server.
eMMC version
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
Unknown. Help us by suggesting a value. (Intel Core i7-7700K)
A higher version of eMMC allows faster memory interfaces, having a positive effect on the performance of a device. For example, when transferring files from your computer to the internal storage over USB.
bus speed
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
Unknown. Help us by suggesting a value. (Intel Core i7-7700K)
The bus is responsible for transferring data between different components of a computer or device.
Features
uses multithreading
✔Intel Core i7-6900k
✔Intel Core i7-7700K
Multithreading technology (such as Intel’s Hyperthreading or AMD’s Simultaneous Multithreading) provides increased performance by splitting each of the processor’s physical cores into virtual cores, also known as threads. This way, each core can run two instruction streams at once.
Has AES
✔Intel Core i7-6900k
✔Intel Core i7-7700K
AES is used to speed up encryption and decryption.
Has AVX
✔Intel Core i7-6900k
✔Intel Core i7-7700K
AVX is used to help speed up calculations in multimedia, scientific and financial apps, as well as improving Linux RAID software performance.
SSE version
SSE is used to speed up multimedia tasks such as editing an image or adjusting audio volume. Each new version contains new instructions and improvements.
Has F16C
✖Intel Core i7-6900k
✔Intel Core i7-7700K
F16C is used to speed up tasks such as adjusting the contrast of an image or adjusting volume.
bits executed at a time
Unknown. Help us by suggesting a value. (Intel Core i7-6900k)
Unknown. Help us by suggesting a value. (Intel Core i7-7700K)
NEON provides acceleration for media processing, such as listening to MP3s.
Has MMX
✔Intel Core i7-6900k
✔Intel Core i7-7700K
MMX is used to speed up tasks such as adjusting the contrast of an image or adjusting volume.
Has TrustZone
✖Intel Core i7-6900k
✖Intel Core i7-7700K
A technology integrated into the processor to secure the device for use with features such as mobile payments and streaming video using digital rights management (DRM).