Intel Core i7-6700K vs Apple M1 Ultra (48-GPU)

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CPU comparison with benchmarks


Intel Core i7-6700K CPU1 vs CPU2 Apple M1 Ultra (48-GPU)
Intel Core i7-6700K Apple M1 Ultra (48-GPU)

CPU comparison

Intel Core i7-6700K or Apple M1 Ultra (48-GPU) - 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 i7-6700K has 4 cores with 8 threads and clocks with a maximum frequency of 4.20 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Core i7-6700K was released in Q3/2015.

The Apple M1 Ultra (48-GPU) has 20 cores with 20 threads and clocks with a maximum frequency of 3.20 GHz. The CPU supports up to 128 GB of memory in 8 memory channels. The Apple M1 Ultra (48-GPU) was released in Q1/2022.
Intel Core i7 (298) Family Apple M series (25)
Intel Core i 6000 (24) CPU group Apple M1 (9)
6 Generation 1
Skylake S Architecture M1
Desktop / Server Segment Mobile
Intel Core i7-4770K Predecessor --
Intel Core i7-7700K Successor Apple M2 Ultra (60-GPU)

CPU Cores and Base Frequency

The Intel Core i7-6700K is a 4 core processor with a clock frequency of 4.00 GHz (4.20 GHz). The Apple M1 Ultra (48-GPU) has 20 CPU cores with a clock frequency of 0.60 GHz (3.20 GHz).

Intel Core i7-6700K Characteristic Apple M1 Ultra (48-GPU)
4 Cores 20
8 Threads 20
normal Core architecture hybrid (big.LITTLE)
Yes Hyperthreading No
Yes Overclocking ? No
4.00 GHz (4.20 GHz) A-Core 0.60 GHz (3.20 GHz)
16x Firestorm
-- B-Core 0.60 GHz (2.06 GHz)
4x Icestorm

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 i7-6700K Characteristic Apple M1 Ultra (48-GPU)
-- AI hardware Apple Neural Engine
-- AI specifications 32 Neural cores @ 22 TOPS

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 Apple M1 Ultra (48 Core)
0.35 GHz GPU frequency 0.39 GHz
1.15 GHz GPU (Turbo) 1.30 GHz
9 GPU Generation 1
14 nm Technology 5 nm
3 Max. displays 5
24 Compute units 768
192 Shader 6144
No Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory 64 GB
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 HD Graphics 530 GPU Apple M1 Ultra (48 Core)
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode Codec VP9 Decode / Encode
Decode / Encode Codec VP8 Decode
No Codec AV1 No
Decode / Encode Codec AVC Decode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Intel Core i7-6700K supports a maximum of 64 GB of memory in 2 memory channels. The Apple M1 Ultra (48-GPU) can connect up to 128 GB of memory in 8 memory channels.

Intel Core i7-6700K Characteristic Apple M1 Ultra (48-GPU)
DDR4-2133, DDR3-1866 Memory LPDDR5-6400
64 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 8 (Octa Channel)
34.1 GB/s Max. Bandwidth 819.2 GB/s
No ECC No
-- L2 Cache 52.00 MB
8.00 MB L3 Cache --
3.0 PCIe version 4.0
16 PCIe lanes --
15.8 GB/s PCIe Bandwidth --

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i7-6700K has a TDP of 91 W, that of the Apple M1 Ultra (48-GPU) is 60 W.

Intel Core i7-6700K Characteristic Apple M1 Ultra (48-GPU)
91 W TDP (PL1 / PBP) 60 W
-- TDP (PL2) --
-- TDP up 120 W
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Core i7-6700K has a 8.00 MB cache, while the Apple M1 Ultra (48-GPU) cache has a total of 52.00 MB.

Intel Core i7-6700K Characteristic Apple M1 Ultra (48-GPU)
14 nm Technology 5 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv8.5-A (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions Rosetta 2 x86-Emulation
LGA 1151 Socket --
VT-x, VT-x EPT, VT-d Virtualization Apple Virtualization Framework
Yes AES-NI Yes
Windows 10, Linux Operating systems macOS
Q3/2015 Release date Q1/2022
420 $ Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Core i7-6700K to help other visitors make their purchasing decisions. The average rating is 3.9 stars (14 ratings). Rate now:
Here you can rate the Apple M1 Ultra (48-GPU) to help other visitors make their purchasing decisions. The average rating is 4.3 stars (3 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 3 CPU benchmarks
Intel Core i7-6700K (64%)
Apple M1 Ultra (48-GPU) (100%)
⌀ Multi core performance in 5 CPU benchmarks
Intel Core i7-6700K (21%)
Apple M1 Ultra (48-GPU) (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 Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.20 GHz
1124 (73%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
1534 (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 Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
5640 (23%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
24189 (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 Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.20 GHz
1151 (64%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
1793 (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 Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
4459 (19%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
24055 (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 Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.20 GHz
1347 (56%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
2397 (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 Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
4665 (19%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
23970 (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 Core i7-6700K Intel Core i7-6700K
Intel HD Graphics 530 @ 1.15 GHz
442 (3%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
Apple M1 Ultra (48 Core) @ 1.30 GHz
15900 (100%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
Intel Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
82 (22%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
379 (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 Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
8955 (22%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
41059 (100%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.20 GHz
0 (0%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
114 (100%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.20 GHz
0 (0%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
1624 (100%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 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 i7-6700K Intel Core i7-6700K
4C 8T @ 4.20 GHz
421 (100%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
0 (0%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 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 i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
2059 (100%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
0 (0%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
Intel Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
369.3 (100%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
0 (0%)

CPU-Z Benchmark 17 (Single-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 i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
464 (100%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 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 Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
2313 (100%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 0.60 GHz
0 (0%)

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 i7-6700K Intel Core i7-6700K
4C 8T @ 4.20 GHz
180 (100%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
0 (0%)

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 i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
888 (100%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 3.20 GHz
0 (0%)

Performance for Artificial Intelligence (AI) and Machine Learning (ML)

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. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Intel Core i7-6700K Intel Core i7-6700K
4C 8T @ 4.00 GHz
0 (0%)
Apple M1 Ultra (48-GPU) Apple M1 Ultra (48-GPU)
20C 20T @ 0.60 GHz
22 (100%)

Devices using this processor

Intel Core i7-6700K Apple M1 Ultra (48-GPU)
Unknown Apple Mac Studio (2022)

News and articles for the Intel Core i7-6700K and the Apple M1 Ultra (48-GPU)


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