i7-2700K vs i7-7800X

VS

Aggregate performance score

Core i7-7800X
2017
6 cores / 12 threads, 140 Watt
8.11
+124%
Core i7-2700K
2011
4 cores / 8 threads, 95 Watt
3.62

Core i7-7800X outperforms Core i7-2700K by a whopping 124% based on our aggregate benchmark results.

Primary details

Comparing Core i7-7800X and Core i7-2700K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking9351507
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation3.300.32
Market segmentDesktop processorDesktop processor
SeriesIntel Core i7Core i7 (Desktop)
Power efficiency5.483.60
Architecture codenameSkylake (server) (2017−2018)Sandy Bridge (2011−2013)
Release date26 June 2017 (7 years ago)24 October 2011 (13 years ago)
Launch price (MSRP)$383$514

Cost-effectiveness evaluation

Performance per price, higher is better.

i7-7800X has 931% better value for money than i7-2700K.

Detailed specifications

Core i7-7800X and Core i7-2700K 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 cores6 (Hexa-Core)4 (Quad-Core)
Threads128
Base clock speed3.5 GHz3.5 GHz
Boost clock speed4 GHz3.9 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/s5 GT/s
Multiplier35no data
L1 cache64 KB (per core)64 KB (per core)
L2 cache1 MB (per core)256 KB (per core)
L3 cache8.25 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 i7-7800X and Core i7-2700K 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)140 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7800X and Core i7-2700K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512Intel® SSE4.1, Intel® SSE4.2, Intel® AVX
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX+-
Idle Statesno data+
Thermal Monitoring-+
Flex Memory Accessno data+
FDIno data+
Fast Memory Accessno data+

Security technologies

Core i7-7800X and Core i7-2700K technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDB++
Identity Protection-+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7800X and Core i7-2700K are enumerated here.

VT-d+-
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7800X and Core i7-2700K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2400DDR3
Maximum memory size128 GB32 GB
Max memory channels42
Maximum memory bandwidth85.33 GB/s21 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AIntel 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 i7-7800X and Core i7-2700K integrated GPUs.

Number of displays supportedno data2

Peripherals

Specifications and connection of peripherals supported by Core i7-7800X and Core i7-2700K.

PCIe version3.02.0
PCI Express lanes2816

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.

i7-7800X 8.11
+124%
i7-2700K 3.62

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.

i7-7800X 12883
+124%
i7-2700K 5744

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.

i7-7800X 1357
+103%
i7-2700K 668

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.

i7-7800X 6138
+169%
i7-2700K 2280

Gaming performance

Pros & cons summary


Performance score 8.11 3.62
Recency 26 June 2017 24 October 2011
Physical cores 6 4
Threads 12 8
Chip lithography 14 nm 32 nm
Power consumption (TDP) 140 Watt 95 Watt

i7-7800X has a 124% higher aggregate performance score, an age advantage of 5 years, 50% more physical cores and 50% more threads, and a 128.6% more advanced lithography process.

i7-2700K, on the other hand, has 47.4% lower power consumption.

The Core i7-7800X is our recommended choice as it beats the Core i7-2700K in performance tests.


Should you still have questions on choice between Core i7-7800X and Core i7-2700K, ask them in Comments section, and we shall answer.

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Intel Core i7-7800X
Core i7-7800X
Intel Core i7-2700K
Core i7-2700K

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Community ratings

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Questions & comments

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