Ryzen 7 7840U vs i7-6800K

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Aggregate performance score

Core i7-6800K
2016
6 cores / 12 threads, 140 Watt
6.76
Ryzen 7 7840U
2023
8 cores / 16 threads, 28 Watt
15.71
+132%

Ryzen 7 7840U outperforms Core i7-6800K by a whopping 132% based on our aggregate benchmark results.

Primary details

Comparing Core i7-6800K and Ryzen 7 7840U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1034435
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.69no data
Market segmentDesktop processorLaptop
Seriesno dataAMD Phoenix (Zen 4, Ryzen 7040)
Power efficiency4.5753.06
Architecture codenameBroadwell-E (2016)Phoenix-U (Zen 4) (2023)
Release date31 May 2016 (8 years ago)May 2023 (1 year ago)
Launch price (MSRP)$345no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-6800K and Ryzen 7 7840U 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)8 (Octa-Core)
Threads1216
Base clock speed3.4 GHz3.3 GHz
Boost clock speed3.8 GHz5.1 GHz
L1 cache32 KB (per core)64K (per core)
L2 cache256 KB (per core)1 MB (per core)
L3 cache15 MB (shared)16 MB (shared)
Chip lithography14 nm4 nm
Die sizeno data178 mm2
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)72 °Cno data
Number of transistorsno data25,000 million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier+-

Compatibility

Information on Core i7-6800K and Ryzen 7 7840U 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
SocketFCLGA2011FP8
Power consumption (TDP)140 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6800K and Ryzen 7 7840U. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
Idle States+no data
Smart Response+no data
Turbo Boost Max 3.0+no data
Precision Boost 2no data+

Security technologies

Core i7-6800K and Ryzen 7 7840U technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6800K and Ryzen 7 7840U are enumerated here.

AMD-V-+
VT-d+no data
VT-x+no data
EPT+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6800K and Ryzen 7 7840U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR5-5600
Maximum memory size128 GBno data
Max memory channels4no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon 780M ( - 2700 MHz)

Peripherals

Specifications and connection of peripherals supported by Core i7-6800K and Ryzen 7 7840U.

PCIe version3.04.0
PCI Express lanes2820

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
Ryzen 7 7840U 15.71
+132%

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
Ryzen 7 7840U 24960
+132%

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
Ryzen 7 7840U 2082
+68.4%

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
Ryzen 7 7840U 8744
+54.5%

Gaming performance

Pros & cons summary


Performance score 6.76 15.71
Physical cores 6 8
Threads 12 16
Chip lithography 14 nm 4 nm
Power consumption (TDP) 140 Watt 28 Watt

Ryzen 7 7840U has a 132.4% higher aggregate performance score, 33.3% more physical cores and 33.3% more threads, a 250% more advanced lithography process, and 400% lower power consumption.

The Ryzen 7 7840U is our recommended choice as it beats the Core i7-6800K in performance tests.

Note that Core i7-6800K is a desktop processor while Ryzen 7 7840U is a notebook one.


Should you still have questions on choice between Core i7-6800K and Ryzen 7 7840U, ask them in Comments section, and we shall answer.

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Intel Core i7-6800K
Core i7-6800K
AMD Ryzen 7 7840U
Ryzen 7 7840U

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Community ratings

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Questions & comments

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