i9-11900K vs A8-7100

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Aggregate performance score

A8-7100
2014
4 cores / 4 threads, 19 Watt
1.03
Core i9-11900K
2021
8 cores / 16 threads, 125 Watt
15.87
+1441%

Core i9-11900K outperforms A8-7100 by a whopping 1441% based on our aggregate benchmark results.

Primary details

Comparing A8-7100 and Core i9-11900K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2440419
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data18.11
Market segmentLaptopDesktop processor
SeriesAMD Kaverino data
Power efficiency5.1312.02
Architecture codenameKaveri (2014−2015)Rocket Lake (2021)
Release date4 June 2014 (10 years ago)16 March 2021 (3 years ago)
Launch price (MSRP)no data$539

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

A8-7100 and Core i9-11900K 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 cores4 (Quad-Core)8 (Octa-Core)
Threads416
Base clock speed1.8 GHz3.5 GHz
Boost clock speed3 GHz5.2 GHz
Bus rateno data8 GT/s
L1 cacheno data80 KB (per core)
L2 cache4096 KB512 KB (per core)
L3 cacheno data16 MB (shared)
Chip lithography28 nm14 nm
Die size245 mm2276 mm2
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors2410 Millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+

Compatibility

Information on A8-7100 and Core i9-11900K 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 configurationno data1
SocketFP3FCLGA1200
Power consumption (TDP)19 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A8-7100 and Core i9-11900K. You'll probably need this information if you require some particular technology.

Instruction set extensions86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX, FMAIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI++
FMA+-
AVX++
FRTC+-
TrueAudio+-
PowerNow+-
PowerGating+-
Out-of-band client management+-
VirusProtect+-
HSA+-
vProno data+
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSX-+
Idle Statesno data+
Thermal Monitoring-+
SIPP-+
Turbo Boost Max 3.0no data+
Deep Learning Boost-+

Security technologies

A8-7100 and Core i9-11900K technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDBno data+
Secure Keyno data+
Identity Protection-+
SGXno data-
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by A8-7100 and Core i9-11900K are enumerated here.

AMD-V+-
VT-dno data+
VT-xno data+
EPTno data+
IOMMU 2.0+-

Memory specs

Types, maximum amount and channel quantity of RAM supported by A8-7100 and Core i9-11900K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3-1600DDR4
Maximum memory sizeno data128 GB
Max memory channels22
Maximum memory bandwidthno data50 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon R5 GraphicsIntel UHD Graphics 750
iGPU core count4no data
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Enduro+-
Switchable graphics+-
UVD+-
VCE+-
Graphics max frequencyno data1.3 GHz
Execution Unitsno data32
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of A8-7100 and Core i9-11900K integrated GPUs.

Number of displays supportedno data3
DisplayPort+-
HDMI+-

Graphics image quality

Maximum display resolutions supported by A8-7100 and Core i9-11900K integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2160@60Hz
Max resolution over eDPno data5120 x 3200 @60Hz
Max resolution over DisplayPortno data5120 x 3200 @60Hz

Graphics API support

APIs supported by A8-7100 and Core i9-11900K integrated GPUs, sometimes API versions are included.

DirectXDirectX® 1212.1
OpenGLno data4.5
Vulkan+-

Peripherals

Specifications and connection of peripherals supported by A8-7100 and Core i9-11900K.

PCIe version3.04.0
PCI Express lanesno data20

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.

A8-7100 1.03
i9-11900K 15.87
+1441%

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.

A8-7100 1638
i9-11900K 25209
+1439%

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.

A8-7100 256
i9-11900K 2398
+837%

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.

A8-7100 577
i9-11900K 11029
+1811%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

A8-7100 1379
i9-11900K 10545
+665%

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

A8-7100 4134
i9-11900K 62024
+1400%

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

A8-7100 33.23
i9-11900K 3.98
+735%

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

A8-7100 2
i9-11900K 27
+1420%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

A8-7100 133
i9-11900K 2379
+1689%

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

A8-7100 44
i9-11900K 255
+480%

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

A8-7100 0.55
i9-11900K 3.1
+464%

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

A8-7100 1.1
i9-11900K 13
+1138%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

A8-7100 11
i9-11900K 137
+1140%

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

A8-7100 56
i9-11900K 310
+453%

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

A8-7100 1417
i9-11900K 9030
+537%

Gaming performance

Pros & cons summary


Performance score 1.03 15.87
Recency 4 June 2014 16 March 2021
Physical cores 4 8
Threads 4 16
Chip lithography 28 nm 14 nm
Power consumption (TDP) 19 Watt 125 Watt

A8-7100 has 557.9% lower power consumption.

i9-11900K, on the other hand, has a 1440.8% higher aggregate performance score, an age advantage of 6 years, 100% more physical cores and 300% more threads, and a 100% more advanced lithography process.

The Core i9-11900K is our recommended choice as it beats the A8-7100 in performance tests.

Be aware that A8-7100 is a notebook processor while Core i9-11900K is a desktop one.


Should you still have questions on choice between A8-7100 and Core i9-11900K, ask them in Comments section, and we shall answer.

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


AMD A8-7100
A8-7100
Intel Core i9-11900K
Core i9-11900K

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