Intel Core i7-6660U vs Intel Core Ultra 7 164U

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CPU comparison with benchmarks


Intel Core i7-6660U CPU1 vs CPU2 Intel Core Ultra 7 164U
Intel Core i7-6660U Intel Core Ultra 7 164U

CPU comparison

Intel Core i7-6660U or Intel Core Ultra 7 164U - 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 i7-6660U has 2 cores with 4 threads and clocks with a maximum frequency of 3.40 GHz. Up to 32 GB of memory is supported in 2 memory channels. The Intel Core i7-6660U was released in Q1/2016.

The Intel Core Ultra 7 164U has 12 cores with 14 threads and clocks with a maximum frequency of 4.80 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The Intel Core Ultra 7 164U was released in Q1/2024.
Intel Core i7 (298) Family Intel Core Ultra 7 (9)
Intel Core i 6000U (20) CPU group Intel Core Ultra 100U (7)
6 Generation 1
Skylake U Architecture Meteor Lake U
Mobile Segment Mobile
-- Predecessor --
Intel Core i7-7660U Successor --

CPU Cores and Base Frequency

The Intel Core i7-6660U is a 2 core processor with a clock frequency of 2.40 GHz (3.40 GHz). The Intel Core Ultra 7 164U has 12 CPU cores with a clock frequency of 1.10 GHz (4.80 GHz).

Intel Core i7-6660U Characteristic Intel Core Ultra 7 164U
2 Cores 12
4 Threads 14
normal Core architecture hybrid (big.LITTLE)
Yes Hyperthreading Yes
No Overclocking ? No
2.40 GHz (3.40 GHz) A-Core 1.10 GHz (4.80 GHz)
2x Redwood Cove
-- B-Core 0.70 GHz (3.80 GHz)
8x Crestmont
-- C-Core 0.40 GHz (2.10 GHz)
2x Crestmont

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 i7-6660U Characteristic Intel Core Ultra 7 164U
-- AI hardware Intel AI engine
-- AI specifications Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT)

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 Iris Graphics 540 GPU Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake)
0.30 GHz GPU frequency 0.60 GHz
1.05 GHz GPU (Turbo) 1.80 GHz
9 GPU Generation --
14 nm Technology 5 nm
3 Max. displays 4
48 Compute units 64
384 Shader 512
No Hardware Raytracing Yes
No Frame Generation No
32 GB Max. GPU Memory 32 GB
12 DirectX Version 12.2

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 Iris Graphics 540 GPU Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake)
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
No Codec VP9 Decode
Decode / Encode Codec VP8 Decode
No Codec AV1 Decode / Encode
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Intel Core i7-6660U supports a maximum of 32 GB of memory in 2 memory channels. The Intel Core Ultra 7 164U can connect up to 64 GB of memory in 2 memory channels.

Intel Core i7-6660U Characteristic Intel Core Ultra 7 164U
LPDDR3-1866, DDR4-2133 Memory LPDDR5-6400
32 GB Max. Memory 64 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
34.1 GB/s Max. Bandwidth 102.4 GB/s
No ECC No
-- L2 Cache 12.00 MB
4.00 MB L3 Cache --
3.0 PCIe version 4.0
12 PCIe lanes 12
11.8 GB/s PCIe Bandwidth 23.6 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i7-6660U has a TDP of 15 W, that of the Intel Core Ultra 7 164U is 9 W.

Intel Core i7-6660U Characteristic Intel Core Ultra 7 164U
15 W TDP (PL1 / PBP) 9 W
-- TDP (PL2) 30 W
-- TDP up 15 W
9.5 W TDP down --
100 °C Tjunction max. 110 °C

Technical details

The Intel Core i7-6660U has a 4.00 MB cache, while the Intel Core Ultra 7 164U cache has a total of 12.00 MB.

Intel Core i7-6660U Characteristic Intel Core Ultra 7 164U
14 nm Technology 7 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
BGA 1356 Socket BGA 2551
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 11, Linux
Q1/2016 Release date Q1/2024
415 $ Release price --
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Core i7-6660U (50%)
Intel Core Ultra 7 164U (100%)
⌀ Multi core performance in 1 CPU benchmarks
Intel Core i7-6660U (25%)
Intel Core Ultra 7 164U (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 i7-6660U Intel Core i7-6660U
2C 4T @ 3.40 GHz
1092 (50%)
Intel Core Ultra 7 164U Intel Core Ultra 7 164U
12C 14T @ 4.80 GHz
2164 (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 i7-6660U Intel Core i7-6660U
2C 4T @ 2.40 GHz
2197 (25%)
Intel Core Ultra 7 164U Intel Core Ultra 7 164U
12C 14T @ 1.10 GHz
8665 (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 i7-6660U Intel Core i7-6660U
Intel Iris Graphics 540 @ 1.05 GHz
806 (45%)
Intel Core Ultra 7 164U Intel Core Ultra 7 164U
Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) @ 1.80 GHz
1785 (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 i7-6660U Intel Core i7-6660U
2C 4T @ 3.40 GHz
820 (100%)
Intel Core Ultra 7 164U Intel Core Ultra 7 164U
12C 14T @ 4.80 GHz
0 (0%)

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 i7-6660U Intel Core i7-6660U
2C 4T @ 2.40 GHz
1896 (100%)
Intel Core Ultra 7 164U Intel Core Ultra 7 164U
12C 14T @ 1.10 GHz
0 (0%)

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 i7-6660U Intel Core i7-6660U
2C 4T @ 2.40 GHz
3720 (100%)
Intel Core Ultra 7 164U Intel Core Ultra 7 164U
12C 14T @ 1.10 GHz
0 (0%)

Devices using this processor

Intel Core i7-6660U Intel Core Ultra 7 164U
Unknown Unknown

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