i7-1255U vs i7-6850K

VS

Aggregate performance score

Core i7-6850K
2016
6 cores / 12 threads, 140 Watt
7.21
Core i7-1255U
2022
10 cores / 12 threads, 15 Watt
8.53
+18.3%

Core i7-1255U outperforms Core i7-6850K by a moderate 18% based on our aggregate benchmark results.

Primary details

Comparing Core i7-6850K and Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking994896
Place by popularitynot in top-10074
Cost-effectiveness evaluation1.40no data
Market segmentDesktop processorLaptop
Seriesno dataIntel Alder Lake-M
Power efficiency4.8753.78
Architecture codenameBroadwell-E (2016)Alder Lake-U (2022)
Release date31 May 2016 (8 years ago)23 February 2022 (2 years ago)
Launch price (MSRP)$475no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-6850K and Core i7-1255U 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)10 (Deca-Core)
Threads1212
Base clock speed3.6 GHz1.7 GHz
Boost clock speed4 GHz4.7 GHz
L1 cache32 KB (per core)80K (per core)
L2 cache256 KB (per core)1.25 MB (per core)
L3 cache15 MB (shared)12 MB (shared)
Chip lithography14 nm10 nm
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)72 °Cno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier+-

Compatibility

Information on Core i7-6850K and Core i7-1255U 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
SocketFCLGA2011Intel BGA 1744
Power consumption (TDP)140 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6850K and Core i7-1255U. You'll probably need this information if you require some particular technology.

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

Security technologies

Core i7-6850K and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6850K and Core i7-1255U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6850K and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4, DDR5
Maximum memory size128 GBno data
Max memory channels4no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel Iris Xe Graphics G7 96EUs ( - 1250 MHz)

Peripherals

Specifications and connection of peripherals supported by Core i7-6850K and Core i7-1255U.

PCIe version3.04.0
PCI Express lanes4020

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.

i7-6850K 7.21
i7-1255U 8.53
+18.3%

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.

i7-6850K 11452
i7-1255U 13544
+18.3%

Gaming performance

Pros & cons summary


Performance score 7.21 8.53
Recency 31 May 2016 23 February 2022
Physical cores 6 10
Chip lithography 14 nm 10 nm
Power consumption (TDP) 140 Watt 15 Watt

i7-1255U has a 18.3% higher aggregate performance score, an age advantage of 5 years, 66.7% more physical cores, a 40% more advanced lithography process, and 833.3% lower power consumption.

The Core i7-1255U is our recommended choice as it beats the Core i7-6850K in performance tests.

Note that Core i7-6850K is a desktop processor while Core i7-1255U is a notebook one.


Should you still have questions on choice between Core i7-6850K and Core i7-1255U, 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 i7-6850K
Core i7-6850K
Intel Core i7-1255U
Core i7-1255U

Similar processor comparisons

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Community ratings

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


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Questions & comments

Here you can ask a question about Core i7-6850K or Core i7-1255U, agree or disagree with our judgements, or report an error or mismatch.