i3-8100B vs i7-8700K

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Aggregate performance score

Core i7-8700K
2017
6 cores / 12 threads, 95 Watt
8.57
+127%
Core i3-8100B
4 cores / 4 threads, 65 Watt
3.78

Core i7-8700K outperforms Core i3-8100B by a whopping 127% based on our aggregate benchmark results.

Primary details

Comparing Core i7-8700K and Core i3-8100B processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking8871482
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation4.56no data
Market segmentDesktop processorLaptop
SeriesIntel Core i7no data
Power efficiency8.545.50
Architecture codenameCoffee Lake-S (2017−2018)no data
Release date24 September 2017 (7 years ago)no data
Launch price (MSRP)$359no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-8700K and Core i3-8100B 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 speed3.7 GHz3.6 GHz
Boost clock speed4.7 GHzno data
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/s8 GT/s
Multiplier37no data
L1 cache384 KBno data
L2 cache1.5 MBno data
L3 cache12288 KB6 MB Intel® Smart Cache
Chip lithography14 nm14 nm
Die size149 mm2no data
Maximum core temperature100 °C100 °C
Maximum case temperature (TCase)72 °Cno data
64 bit support++
Windows 11 compatibility++
Unlocked multiplier+-

Compatibility

Information on Core i7-8700K and Core i3-8100B 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
SocketFCLGA1151FCBGA1440
Power consumption (TDP)95 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-8700K and Core i3-8100B. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX+-
vPro+no data
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology+-
TSX+-
Idle States++
Thermal Monitoring++
SIPP+-

Security technologies

Core i7-8700K and Core i3-8100B technologies aimed at improving security, for example, by protecting against hacks.

TXT+-
EDB++
Secure Key++
MPX++
Identity Protection++
SGXYes with Intel® MEYes with Intel® ME
OS Guard++

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-8700K and Core i3-8100B are enumerated here.

AMD-V+-
VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-8700K and Core i3-8100B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3, DDR4DDR4-2666
Maximum memory size128 GB64 GB
Max memory channels22
Maximum memory bandwidth42.671 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel UHD Graphics 630Intel UHD Graphics 630
Max video memory64 GB64 GB
Quick Sync Video++
Clear Video++
Clear Video HD++
Graphics max frequency1.2 GHz1.05 GHz
InTru 3D++

Graphics interfaces

Available interfaces and connections of Core i7-8700K and Core i3-8100B integrated GPUs.

Number of displays supported33

Graphics image quality

Maximum display resolutions supported by Core i7-8700K and Core i3-8100B integrated GPUs, including resolutions over different interfaces.

4K resolution support++
Max resolution over HDMI 1.44096 x 2304@24Hz4096x2304@30Hz
Max resolution over eDP4096 x 2304@60Hz4096x2304@60Hz
Max resolution over DisplayPort4096 x 2304@60Hz4096x2304@60Hz

Graphics API support

APIs supported by Core i7-8700K and Core i3-8100B integrated GPUs, sometimes API versions are included.

DirectX1212
OpenGL4.54.5

Peripherals

Specifications and connection of peripherals supported by Core i7-8700K and Core i3-8100B.

PCIe version3.03.0
PCI Express lanes1616

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.

i7-8700K 8.57
+127%
i3-8100B 3.78

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.

i7-8700K 13619
+127%
i3-8100B 5997

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.

i7-8700K 1609
+29.2%
i3-8100B 1245

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.

i7-8700K 6504
+82.8%
i3-8100B 3558

Gaming performance

Pros & cons summary


Performance score 8.57 3.78
Physical cores 6 4
Threads 12 4
Power consumption (TDP) 95 Watt 65 Watt

i7-8700K has a 126.7% higher aggregate performance score, and 50% more physical cores and 200% more threads.

i3-8100B, on the other hand, has 46.2% lower power consumption.

The Core i7-8700K is our recommended choice as it beats the Core i3-8100B in performance tests.

Note that Core i7-8700K is a desktop processor while Core i3-8100B is a notebook one.


Should you still have questions on choice between Core i7-8700K and Core i3-8100B, 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 i7-8700K
Core i7-8700K
Intel Core i3-8100B
Core i3-8100B

Similar processor comparisons

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Community ratings

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Questions & comments

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