Intel Atom x6427FE vs Intel Core i7-6800K

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CPU comparison with benchmarks


Intel Atom x6427FE CPU1 vs CPU2 Intel Core i7-6800K
Intel Atom x6427FE Intel Core i7-6800K

CPU comparison

In this CPU comparison, we compare the Intel Atom x6427FE and the Intel Core i7-6800K and use benchmarks to check which processor is faster.

We compare the Intel Atom x6427FE 4 core processor released in Q1/2021 with the Intel Core i7-6800K which has 6 CPU cores and was introduced in Q2/2016.
Intel Atom (108) Family Intel Core i7 Extreme Edition (24)
Intel Atom x6000 (10) CPU group Intel Core i 6000 (24)
6 Generation 6
Elkhart Lake Architecture Skylake S
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Atom x6427FE is a 4 core processor with a clock frequency of 1.90 GHz. The processor can compute 4 threads at the same time. The Intel Core i7-6800K clocks with 3.40 GHz (3.60 GHz), has 6 CPU cores and can calculate 12 threads in parallel.

Intel Atom x6427FE Characteristic Intel Core i7-6800K
4 Cores 6
4 Threads 12
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? Yes
1.90 GHz Frequency 3.40 GHz
-- Turbo Frequency (1 Core) 3.60 GHz
-- Turbo Frequency (All Cores) --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Atom x6427FE Characteristic Intel Core i7-6800K
-- AI hardware --
-- AI specifications --

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

Intel UHD Graphics 10th Gen (32 EU) GPU no iGPU
0.40 GHz GPU frequency --
-- GPU (Turbo) --
11 GPU Generation --
14 nm Technology
3 Max. displays
32 Compute units --
256 Shader --
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory --
12 DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel UHD Graphics 10th Gen (32 EU) GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode / Encode Codec VP9 No
Decode / Encode Codec VP8 No
Decode Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

Up to 32 GB of memory in a maximum of 4 memory channels is supported by the Intel Atom x6427FE, while the Intel Core i7-6800K supports a maximum of 128 GB of memory with a maximum memory bandwidth of 76.8 GB/s enabled.

Intel Atom x6427FE Characteristic Intel Core i7-6800K
LPDDR4X-4266, DDR4-3200 Memory DDR4-2400
32 GB Max. Memory 128 GB
4 (Quad Channel) Memory channels 4 (Quad Channel)
136.4 GB/s Max. Bandwidth 76.8 GB/s
Yes ECC No
1.50 MB L2 Cache --
-- L3 Cache 15.00 MB
3.0 PCIe version 3.0
8 PCIe lanes 28
7.9 GB/s PCIe Bandwidth 27.6 GB/s

Thermal Management

The Intel Atom x6427FE has a TDP of 12 W. The TDP of the Intel Core i7-6800K is 140 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Atom x6427FE Characteristic Intel Core i7-6800K
12 W TDP (PL1 / PBP) 140 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
110 °C Tjunction max. 100 °C

Technical details

The Intel Atom x6427FE has 1.50 MB cache and is manufactured in 10 nm. The cache of Intel Core i7-6800K is at 15.00 MB. The processor is manufactured in 14 nm.

Intel Atom x6427FE Characteristic Intel Core i7-6800K
10 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4.1, SSE4.2, AVX2
BGA 1493 Socket LGA 2011-3
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Operating systems Windows 10, Linux
Q1/2021 Release date Q2/2016
-- Release price 628 $
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Atom x6427FE (33%)
Intel Core i7-6800K (100%)
⌀ Multi core performance in 3 CPU benchmarks
Intel Atom x6427FE (22%)
Intel Core i7-6800K (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Atom x6427FE Intel Atom x6427FE
4C 4T @ 1.90 GHz
437 (40%)
Intel Core i7-6800K Intel Core i7-6800K
6C 12T @ 3.60 GHz
1080 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Atom x6427FE Intel Atom x6427FE
4C 4T @ 1.90 GHz
1445 (23%)
Intel Core i7-6800K Intel Core i7-6800K
6C 12T @ 3.40 GHz
6314 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Atom x6427FE Intel Atom x6427FE
4C 4T @ 1.90 GHz
334 (26%)
Intel Core i7-6800K Intel Core i7-6800K
6C 12T @ 3.60 GHz
1267 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Atom x6427FE Intel Atom x6427FE
4C 4T @ 1.90 GHz
1021 (17%)
Intel Core i7-6800K Intel Core i7-6800K
6C 12T @ 3.40 GHz
5960 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Atom x6427FE Intel Atom x6427FE
4C 4T @ 1.90 GHz
2935 (27%)
Intel Core i7-6800K Intel Core i7-6800K
6C 12T @ 3.40 GHz
10752 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Atom x6427FE Intel Atom x6427FE
4C 4T @ 1.90 GHz
0 (0%)
Intel Core i7-6800K Intel Core i7-6800K
6C 12T @ 3.60 GHz
949 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Atom x6427FE Intel Atom x6427FE
4C 4T @ 1.90 GHz
0 (0%)
Intel Core i7-6800K Intel Core i7-6800K
6C 12T @ 3.40 GHz
6645 (100%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Atom x6427FE Intel Atom x6427FE
Intel UHD Graphics 10th Gen (32 EU) @ 0.40 GHz
213 (100%)
Intel Core i7-6800K Intel Core i7-6800K
@ 0.00 GHz
0 (0%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Atom x6427FE Intel Atom x6427FE
4C 4T @ 1.90 GHz
0 (0%)
Intel Core i7-6800K Intel Core i7-6800K
6C 12T @ 3.40 GHz
3194 (100%)

Devices using this processor

Intel Atom x6427FE Intel Core i7-6800K
Unknown Unknown

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