Core i5-8265U vs Core i7-6700K

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Aggregate performance score

Core i7-6700K
2015
4 cores / 8 threads, 91 Watt
5.77
+49.5%

i7-6700K outperforms i5-8265U by a considerable 49% based on our aggregate benchmark results.

Primary details

Comparing Core i7-6700K and Core i5-8265U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking10821406
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.46no data
Market segmentDesktop processorLaptop
SeriesIntel Core i7 (Desktop)Intel Core i5
Architecture codenameSkylake (2015−2016)Whiskey Lake-U (2018−2019)
Release date1 September 2015 (8 years ago)28 August 2018 (5 years ago)
Launch price (MSRP)$339$297

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-6700K and Core i5-8265U basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores4 (Quad-Core)4 (Quad-Core)
Threads88
Base clock speed4 GHz1.6 GHz
Boost clock speed4 GHz1.6 GHz
Bus support4 × 8 GT/s4 GT/s
L1 cache256 KB256 KB
L2 cache1 MB1 MB
L3 cache8 MB6 MB
Chip lithography14 nm14 nm
Die size122 mm2123 mm2
Maximum case temperature (TCase)72 °C72 °C
Number of transistors1750 Millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplierYesNo

Compatibility

Information on Core i7-6700K and Core i5-8265U compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1 (Uniprocessor)1 (Uniprocessor)
SocketFCLGA1151BGA1528
Power consumption (TDP)91 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6700K and Core i5-8265U. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++
vPro+no data
Enhanced SpeedStep (EIST)++
Hyper-Threading Technology++
TSX+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6700K and Core i5-8265U are enumerated here.

AMD-V++
VT-d++
VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6700K and Core i5-8265U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3, DDR4DDR4
Maximum memory size64 GB32 GB
Max memory channels22
Maximum memory bandwidth34.134 GB/s38.397 GB/s
ECC memory support--

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
Intel HD Graphics 530Intel UHD Graphics 620

Peripherals

Specifications and connection of peripherals supported by Core i7-6700K and Core i5-8265U.

PCIe version3.03.0
PCI Express lanes1616

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i7-6700K 5.77
+49.5%
i5-8265U 3.86

Core i7-6700K outperforms Core i5-8265U by 49% based on our aggregate benchmark results.


Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 68%

i7-6700K 8929
+49.5%
i5-8265U 5973

Core i7-6700K outperforms Core i5-8265U by 49% in Passmark.

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Benchmark coverage: 41%

i7-6700K 1484
+106%
i5-8265U 720

Core i7-6700K outperforms Core i5-8265U by 106% in GeekBench 5 Single-Core.

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Benchmark coverage: 41%

i7-6700K 4902
+116%
i5-8265U 2272

Core i7-6700K outperforms Core i5-8265U by 116% in GeekBench 5 Multi-Core.

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Benchmark coverage: 19%

i7-6700K 6531
+7.4%
i5-8265U 6082

Core i7-6700K outperforms Core i5-8265U by 7% in Cinebench 10 32-bit single-core.

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Benchmark coverage: 19%

i7-6700K 25817
+33%
i5-8265U 19418

Core i7-6700K outperforms Core i5-8265U by 33% in Cinebench 10 32-bit multi-core.

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Benchmark coverage: 18%

i7-6700K 9037
+43.1%
i5-8265U 6316

Core i7-6700K outperforms Core i5-8265U by 43% in 3DMark06 CPU.

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Benchmark coverage: 18%

i7-6700K 6.66
+65.5%
i5-8265U 11.02

Core i5-8265U outperforms Core i7-6700K by 65% in wPrime 32.

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

Benchmark coverage: 17%

i7-6700K 10
+68.1%
i5-8265U 6

Core i7-6700K outperforms Core i5-8265U by 68% in Cinebench 11.5 64-bit multi-core.

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Benchmark coverage: 15%

i7-6700K 880
+46.3%
i5-8265U 602

Core i7-6700K outperforms Core i5-8265U by 46% in Cinebench 15 64-bit multi-core.

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

Benchmark coverage: 14%

i7-6700K 178
+11.6%
i5-8265U 159

Core i7-6700K outperforms Core i5-8265U by 12% in Cinebench 15 64-bit single-core.

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

Benchmark coverage: 14%

i7-6700K 1.97
+10.7%
i5-8265U 1.78

Core i7-6700K outperforms Core i5-8265U by 11% in Cinebench 11.5 64-bit single-core.

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

Benchmark coverage: 13%

i7-6700K 4.4
i5-8265U 4.4
+1.1%

Core i5-8265U outperforms Core i7-6700K by 1% in TrueCrypt AES.

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

Benchmark coverage: 12%

i7-6700K 5877
+47.4%
i5-8265U 3988

Core i7-6700K outperforms Core i5-8265U by 47% in WinRAR 4.0.

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

Benchmark coverage: 12%

i7-6700K 55
+39.6%
i5-8265U 39

Core i7-6700K outperforms Core i5-8265U by 40% in x264 encoding pass 2.

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

Benchmark coverage: 12%

i7-6700K 205
+31.3%
i5-8265U 156

Core i7-6700K outperforms Core i5-8265U by 31% in x264 encoding pass 1.

Geekbench 3 32-bit multi-core

Benchmark coverage: 5%

i7-6700K 16365
+16.9%
i5-8265U 14002

Core i7-6700K outperforms Core i5-8265U by 17% in Geekbench 3 32-bit multi-core.

Geekbench 3 32-bit single-core

Benchmark coverage: 5%

i7-6700K 4225
+14.9%
i5-8265U 3679

Core i7-6700K outperforms Core i5-8265U by 15% in Geekbench 3 32-bit single-core.

Gaming performance

Pros & cons summary


Performance score 5.77 3.86
Integrated graphics card 2.59 2.67
Recency 1 September 2015 28 August 2018
Power consumption (TDP) 91 Watt 15 Watt

i7-6700K has a 49.5% higher aggregate performance score.

i5-8265U, on the other hand, has 3.1% faster integrated GPU, an age advantage of 2 years, and 506.7% lower power consumption.

The Core i7-6700K is our recommended choice as it beats the Core i5-8265U in performance tests.

Note that Core i7-6700K is a desktop processor while Core i5-8265U is a notebook one.


Should you still have questions on choice between Core i7-6700K and Core i5-8265U, ask them in Comments section, and we shall answer.

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Intel Core i7-6700K
Core i7-6700K
Intel Core i5-8265U
Core i5-8265U

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Community ratings

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Questions & comments

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