Intel Core i7-6820HK vs Intel Celeron 3955U

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CPU comparison with benchmarks


Intel Core i7-6820HK CPU1 vs CPU2 Intel Celeron 3955U
Intel Core i7-6820HK Intel Celeron 3955U

CPU comparison

Intel Core i7-6820HK or Intel Celeron 3955U - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core i7-6820HK has 4 cores with 8 threads and clocks with a maximum frequency of 3.60 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Core i7-6820HK was released in Q3/2015.

The Intel Celeron 3955U has 2 cores with 2 threads and clocks with a maximum frequency of 2.00 GHz. The CPU supports up to 32 GB of memory in 2 memory channels. The Intel Celeron 3955U was released in Q4/2015.
Intel Core i7 (298) Family Intel Celeron (165)
Intel Core i 6000H (15) CPU group Intel Celeron 3000 (10)
6 Generation 7
Skylake H Architecture Kaby Lake U
Mobile Segment Mobile
-- Predecessor --
Intel Core i7-7820HK Successor --

CPU Cores and Base Frequency

The Intel Core i7-6820HK is a 4 core processor with a clock frequency of 2.70 GHz (3.60 GHz). The Intel Celeron 3955U has 2 CPU cores with a clock frequency of 2.00 GHz.
Intel Core i7-6820HK Characteristic Intel Celeron 3955U
4 Cores 2
8 Threads 2
normal Core architecture normal
Yes Hyperthreading No
Yes Overclocking ? No
2.70 GHz Frequency 2.00 GHz
3.60 GHz Turbo Frequency (1 Core) --
3.20 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 Core i7-6820HK Characteristic Intel Celeron 3955U
-- AI hardware --
-- AI specifications --

Internal Graphics

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.
Intel HD Graphics 530 GPU Intel HD Graphics 510
0.35 GHz GPU frequency 0.30 GHz
1.05 GHz GPU (Turbo) 0.90 GHz
9 GPU Generation 9
14 nm Technology 14 nm
3 Max. displays 3
24 Compute units 12
192 Shader 96
No Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory 32 GB
12 DirectX Version 12.0

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 HD Graphics 530 GPU Intel HD Graphics 510
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode Codec h265 / HEVC (10 bit) Decode
Decode / Encode Codec h264 Decode / Encode
Decode Codec VP9 Decode
Decode / Encode Codec VP8 Decode / Encode
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode

Memory & PCIe

The Intel Core i7-6820HK supports a maximum of 64 GB of memory in 2 memory channels. The Intel Celeron 3955U can connect up to 32 GB of memory in 2 memory channels.
Intel Core i7-6820HK Characteristic Intel Celeron 3955U
DDR4-2133 Memory LPDDR3-1866, DDR4-2133, DDR3L-1600
64 GB Max. Memory 32 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
34.1 GB/s Max. Bandwidth 34.1 GB/s
No ECC No
-- L2 Cache --
8.00 MB L3 Cache 2.00 MB
3.0 PCIe version 3.0
20 PCIe lanes 12
19.7 GB/s PCIe Bandwidth 11.8 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i7-6820HK has a TDP of 45 W, that of the Intel Celeron 3955U is 15 W.
Intel Core i7-6820HK Characteristic Intel Celeron 3955U
45 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 10 W
-- Tjunction max. 100 °C

Technical details

The Intel Core i7-6820HK has a 8.00 MB cache, while the Intel Celeron 3955U cache has a total of 2.00 MB.
Intel Core i7-6820HK Characteristic Intel Celeron 3955U
14 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2
BGA 1440 Socket --
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q3/2015 Release date Q4/2015
-- Release price --
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 3 CPU benchmarks
Intel Core i7-6820HK (100%)
Intel Celeron 3955U (50%)
⌀ Multi core performance in 4 CPU benchmarks
Intel Core i7-6820HK (100%)
Intel Celeron 3955U (24%)

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 Core i7-6820HK Intel Core i7-6820HK
4C 8T @ 3.60 GHz
931 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
514 (55%)

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 Core i7-6820HK Intel Core i7-6820HK
4C 8T @ 3.20 GHz
3477 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
1018 (29%)

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 Core i7-6820HK Intel Core i7-6820HK
4C 8T @ 3.60 GHz
1173 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
445 (38%)

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 Core i7-6820HK Intel Core i7-6820HK
4C 8T @ 3.20 GHz
3556 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
780 (22%)

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 Core i7-6820HK Intel Core i7-6820HK
Intel HD Graphics 530 @ 1.05 GHz
403 (100%)
Intel Celeron 3955U Intel Celeron 3955U
Intel HD Graphics 510 @ 0.90 GHz
173 (43%)

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 Core i7-6820HK Intel Core i7-6820HK
4C 8T @ 3.20 GHz
6942 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
1488 (21%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 Core i7-6820HK Intel Core i7-6820HK
4C 8T @ 3.60 GHz
152 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
85 (56%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 Core i7-6820HK Intel Core i7-6820HK
4C 8T @ 3.20 GHz
694 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
159 (23%)

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 Core i7-6820HK Intel Core i7-6820HK
4C 8T @ 2.70 GHz
1802 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
0 (0%)

Devices using this processor
Intel Core i7-6820HK Intel Celeron 3955U
Unknown Unknown

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