i7-2600K vs i7-7740X

VS

Aggregate performance score

Core i7-7740X
2017
4 cores / 8 threads, 112 Watt
6.06
+75.1%
Core i7-2600K
2011
4 cores / 8 threads, 95 Watt
3.46

Core i7-7740X outperforms Core i7-2600K by an impressive 75% based on our aggregate benchmark results.

Primary details

Comparing Core i7-7740X and Core i7-2600K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking11011555
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.310.47
Market segmentDesktop processorDesktop processor
SeriesCore i7 (Desktop)Intel Core i7 (Desktop)
Power efficiency5.123.45
Architecture codenameKaby Lake-X (2017)Sandy Bridge (2011−2013)
Release date30 May 2017 (7 years ago)9 January 2011 (13 years ago)
Launch price (MSRP)$339$317

Cost-effectiveness evaluation

Performance per price, higher is better.

i7-7740X has 391% better value for money than i7-2600K.

Detailed specifications

Core i7-7740X and Core i7-2600K 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 speed4.3 GHz3.4 GHz
Boost clock speed4.5 GHz3.8 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/s5 GT/s
L1 cache256 KB64 KB (per core)
L2 cache1 MB256K (per core)
L3 cache8 MB (shared)8 MB (shared)
Chip lithography14 nm32 nm
Die sizeno data216 mm2
Maximum core temperature100 °C73 °C
Maximum case temperature (TCase)72 °Cno data
Number of transistorsno data1,160 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier++

Compatibility

Information on Core i7-7740X and Core i7-2600K 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
SocketFCLGA2066LGA1155
Power consumption (TDP)112 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7740X and Core i7-2600K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX
AES-NI++
AVX++
vPro+no data
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.0+
Hyper-Threading Technology++
TSX+-
Idle Statesno data+
Thermal Monitoring-+
Flex Memory Accessno data+
FDIno data+
Fast Memory Accessno data+

Security technologies

Core i7-7740X and Core i7-2600K technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+
Identity Protection-+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7740X and Core i7-2600K are enumerated here.

AMD-V+-
VT-d+-
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7740X and Core i7-2600K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR3
Maximum memory size64 GB32 GB
Max memory channels22
Maximum memory bandwidth42.671 GB/s21 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardHD 630Intel HD Graphics 3000
Quick Sync Video-+
Clear Video HDno data+
Graphics max frequencyno data1.35 GHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core i7-7740X and Core i7-2600K integrated GPUs.

Number of displays supportedno data2

Peripherals

Specifications and connection of peripherals supported by Core i7-7740X and Core i7-2600K.

PCIe version3.02.0
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.

i7-7740X 6.06
+75.1%
i7-2600K 3.46

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.

i7-7740X 9621
+75.2%
i7-2600K 5492

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.

i7-7740X 1655
+148%
i7-2600K 667

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.

i7-7740X 5341
+133%
i7-2600K 2293

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.

i7-7740X 7397
+53.8%
i7-2600K 4809

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.

i7-7740X 29538
+58.7%
i7-2600K 18608

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.

i7-7740X 10252
+53.7%
i7-2600K 6669

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.

i7-7740X 5.44
+93%
i7-2600K 10.5

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.

i7-7740X 11
+60.7%
i7-2600K 7

Cinebench 15 64-bit multi-core

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

i7-7740X 991
+61.5%
i7-2600K 614

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.

i7-7740X 196
+51.6%
i7-2600K 129

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.

i7-7740X 2.21
+46.4%
i7-2600K 1.51

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.

i7-7740X 5.6
+69.7%
i7-2600K 3.3

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.

i7-7740X 6417
+84.1%
i7-2600K 3486

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.  

i7-7740X 62
+69%
i7-2600K 37

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.  

i7-7740X 234
+61.1%
i7-2600K 145

Geekbench 3 32-bit multi-core

i7-7740X 18222
+57.8%
i7-2600K 11547

Geekbench 3 32-bit single-core

i7-7740X 4541
+50.6%
i7-2600K 3015

Geekbench 2

i7-7740X 15416
+98.8%
i7-2600K 7754

Gaming performance

Pros & cons summary


Performance score 6.06 3.46
Recency 30 May 2017 9 January 2011
Chip lithography 14 nm 32 nm
Power consumption (TDP) 112 Watt 95 Watt

i7-7740X has a 75.1% higher aggregate performance score, an age advantage of 6 years, and a 128.6% more advanced lithography process.

i7-2600K, on the other hand, has 17.9% lower power consumption.

The Core i7-7740X is our recommended choice as it beats the Core i7-2600K in performance tests.


Should you still have questions on choice between Core i7-7740X and Core i7-2600K, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i7-7740X
Core i7-7740X
Intel Core i7-2600K
Core i7-2600K

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


2.9 64 votes

Rate Core i7-7740X on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.2 1521 vote

Rate Core i7-2600K on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core i7-7740X or Core i7-2600K, agree or disagree with our judgements, or report an error or mismatch.