i5-7400T vs i7-6800K

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Aggregate performance score

Core i7-6800K
2016
6 cores / 12 threads, 140 Watt
6.76
+128%
Core i5-7400T
2017
4 cores / 4 threads, 35 Watt
2.96

Core i7-6800K outperforms Core i5-7400T by a whopping 128% based on our aggregate benchmark results.

Primary details

Comparing Core i7-6800K and Core i5-7400T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking10341652
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.690.63
Market segmentDesktop processorDesktop processor
Seriesno dataIntel Core i5
Power efficiency4.578.00
Architecture codenameBroadwell-E (2016)Kaby Lake (2016−2019)
Release date31 May 2016 (8 years ago)3 January 2017 (7 years ago)
Launch price (MSRP)$345$187

Cost-effectiveness evaluation

Performance per price, higher is better.

i7-6800K has 168% better value for money than i5-7400T.

Detailed specifications

Core i7-6800K and Core i5-7400T 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)
Threads124
Base clock speed3.4 GHz2.4 GHz
Boost clock speed3.8 GHz3 GHz
Bus typeno dataDMI 3.0
Bus rateno data8 GT/s
Multiplierno data24
L1 cache32 KB (per core)64K (per core)
L2 cache256 KB (per core)256K (per core)
L3 cache15 MB (shared)6 MB (shared)
Chip lithography14 nm14 nm
Maximum core temperatureno data80 °C
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on Core i7-6800K and Core i5-7400T 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 configuration11 (Uniprocessor)
SocketFCLGA2011FCLGA1151
Power consumption (TDP)140 Watt35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6800K and Core i5-7400T. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology+-
Idle States++
Thermal Monitoring-+
Smart Response+no data
Turbo Boost Max 3.0+no data

Security technologies

Core i7-6800K and Core i5-7400T technologies aimed at improving security, for example, by protecting against hacks.

TXT+-
EDB++
Secure Keyno data+
MPX-+
Identity Protection-+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6800K and Core i5-7400T are enumerated here.

VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6800K and Core i5-7400T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4
Maximum memory size128 GB64 GB
Max memory channels42
Maximum memory bandwidthno data38.397 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel HD Graphics 630
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data1 GHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core i7-6800K and Core i5-7400T integrated GPUs.

Number of displays supportedno data3

Graphics image quality

Maximum display resolutions supported by Core i7-6800K and Core i5-7400T integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2304@24Hz
Max resolution over eDPno data4096x2304@60Hz
Max resolution over DisplayPortno data4096x2304@60Hz

Graphics API support

APIs supported by Core i7-6800K and Core i5-7400T integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Core i7-6800K and Core i5-7400T.

PCIe version3.03.0
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.

i7-6800K 6.76
+128%
i5-7400T 2.96

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.

i7-6800K 10738
+129%
i5-7400T 4699

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.

i7-6800K 1236
+20.6%
i5-7400T 1025

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.

i7-6800K 5661
+101%
i5-7400T 2820

Gaming performance

Pros & cons summary


Performance score 6.76 2.96
Recency 31 May 2016 3 January 2017
Physical cores 6 4
Threads 12 4
Power consumption (TDP) 140 Watt 35 Watt

i7-6800K has a 128.4% higher aggregate performance score, and 50% more physical cores and 200% more threads.

i5-7400T, on the other hand, has an age advantage of 7 months, and 300% lower power consumption.

The Core i7-6800K is our recommended choice as it beats the Core i5-7400T in performance tests.


Should you still have questions on choice between Core i7-6800K and Core i5-7400T, ask them in Comments section, and we shall answer.

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Intel Core i7-6800K
Core i7-6800K
Intel Core i5-7400T
Core i5-7400T

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Community ratings

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Questions & comments

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