i9-11900KF vs Athlon II X4 640

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Aggregate performance score

Athlon II X4 640
2010
4 cores / 4 threads, 95 Watt
1.41
Core i9-11900KF
2021
8 cores / 16 threads, 125 Watt
15.69
+1013%

Core i9-11900KF outperforms Athlon II X4 640 by a whopping 1013% based on our aggregate benchmark results.

Primary details

Comparing Athlon II X4 640 and Core i9-11900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2216438
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.92no data
Market segmentDesktop processorDesktop processor
Power efficiency1.4011.88
Architecture codenamePropus (2009−2011)Rocket Lake (2021)
Release date11 May 2010 (14 years ago)16 March 2021 (3 years ago)
Launch price (MSRP)$80no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Athlon II X4 640 and Core i9-11900KF 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 speed3 GHz3.5 GHz
Boost clock speed3 GHz5.2 GHz
Bus rateno data8 GT/s
L1 cache128 KB (per core)64K (per core)
L2 cache512 KB (per core)256K (per core)
L3 cache0 KB16 MB (shared)
Chip lithography45 nm14 nm
Die size169 mm2no data
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors300 millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+

Compatibility

Information on Athlon II X4 640 and Core i9-11900KF 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
SocketAM3FCLGA1200
Power consumption (TDP)95 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon II X4 640 and Core i9-11900KF. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI-+
AVX-+
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSX-+
Idle Statesno data+
Thermal Monitoring-+
Turbo Boost Max 3.0no data+
Deep Learning Boost-+

Security technologies

Athlon II X4 640 and Core i9-11900KF 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 Athlon II X4 640 and Core i9-11900KF are enumerated here.

VT-dno data+
VT-xno data+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 640 and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4-3200
Maximum memory sizeno data128 GB
Max memory channelsno data2
Maximum memory bandwidthno data50 GB/s

Peripherals

Specifications and connection of peripherals supported by Athlon II X4 640 and Core i9-11900KF.

PCIe version2.04.0
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.

Athlon II X4 640 1.41
i9-11900KF 15.69
+1013%

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.

Athlon II X4 640 2245
i9-11900KF 24922
+1010%

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.

Athlon II X4 640 313
i9-11900KF 2329
+644%

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.

Athlon II X4 640 948
i9-11900KF 10037
+959%

Gaming performance

Pros & cons summary


Performance score 1.41 15.69
Recency 11 May 2010 16 March 2021
Physical cores 4 8
Threads 4 16
Chip lithography 45 nm 14 nm
Power consumption (TDP) 95 Watt 125 Watt

Athlon II X4 640 has 31.6% lower power consumption.

i9-11900KF, on the other hand, has a 1012.8% higher aggregate performance score, an age advantage of 10 years, 100% more physical cores and 300% more threads, and a 221.4% more advanced lithography process.

The Core i9-11900KF is our recommended choice as it beats the Athlon II X4 640 in performance tests.


Should you still have questions on choice between Athlon II X4 640 and Core i9-11900KF, ask them in Comments section, and we shall answer.

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AMD Athlon II X4 640
Athlon II X4 640
Intel Core i9-11900KF
Core i9-11900KF

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Community ratings

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Questions & comments

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