Intel Core i7-6900K vs Core i7-7820X

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Combined performance score

i7-7820X
11.22
+18.7%

Core i7-7820X outperforms Core i7-6900K by 19% in our combined benchmark results.

General info

Comparing Core i7-7820X and Core i7-6900K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking614723
Place by popularitynot in top-100not in top-100
Value for money9.265.08
Market segmentDesktop processorDesktop processor
SeriesIntel Core i7no data
Architecture codenameSkylake (server) (2017−2019)Broadwell-E (2016)
Release date26 June 2017 (6 years old)31 May 2016 (7 years old)
Launch price (MSRP)$599$1,020
Current price$376 (0.6x MSRP)$290 (0.3x MSRP)
Value for money

Performance per price, higher is better.

i7-7820X has 82% better value for money than i7-6900K.

Technical specs

Core i7-7820X and Core i7-6900K 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 cores8 (Octa-Core)8 (Octa-Core)
Threads1616
Base clock speed3.6 GHz3.2 GHz
Boost clock speed4.5 GHz4 GHz
Bus support4 × 8 GT/sno data
L1 cache64 KB (per core)32 KB (per core)
L2 cache1 MB (per core)256 KB (per core)
L3 cache11 MB (shared)20 MB (shared)
Chip lithography14 nm14 nm
Maximum core temperature99 °C67°
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility+-
Unlocked multiplierYesYes

Compatibility

Information on Core i7-7820X and Core i7-6900K 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
SocketFCLGA2066FCLGA2011
Power consumption (TDP)140 Watt140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7820X and Core i7-6900K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512no data
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX+no data
Idle Statesno data+
Smart Responseno data+
Turbo Boost Max 3.0++
StatusDiscontinuedDiscontinued

Security technologies

Core i7-7820X and Core i7-6900K technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7820X and Core i7-6900K are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7820X and Core i7-6900K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2666DDR4
Maximum memory size128 GB128 GB
Max memory channels44
Maximum memory bandwidth85 GB/sno data
ECC memory support--

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/Ano data

Peripherals

Specifications and connection of peripherals supported by Core i7-7820X and Core i7-6900K.

PCIe version3.03.0
PCI Express lanes2840

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.

i7-7820X 11.22
+18.7%
i7-6900K 9.45

Core i7-7820X outperforms Core i7-6900K by 19% in our combined 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%

i7-7820X 17231
+18.7%
i7-6900K 14517

Core i7-7820X outperforms Core i7-6900K by 19% 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: 42%

i7-7820X 1414
+12.2%
i7-6900K 1260

Core i7-7820X outperforms Core i7-6900K by 12% 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: 42%

i7-7820X 7865
+10.4%
i7-6900K 7122

Core i7-7820X outperforms Core i7-6900K by 10% in GeekBench 5 Multi-Core.

Gaming performance

Advantages and disadvantages


Performance score 11.22 9.45
Recency 26 June 2017 31 May 2016
Cost $599 $1020

The Core i7-7820X is our recommended choice as it beats the Core i7-6900K in performance tests.


Should you still have questions on choice between Core i7-7820X and Core i7-6900K, ask them in Comments section, and we shall answer.

User ratings

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


Intel Core i7-7820X
Core i7-7820X
Intel Core i7-6900K
Core i7-6900K

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User ratings: view and submit

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Questions and comments

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