i5-9400F vs Athlon II X4 651

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Aggregate performance score

Athlon II X4 651
2011
4 cores / 4 threads, 100 Watt
2.26
Core i5-9400F
2019
6 cores / 6 threads, 65 Watt
5.96
+164%

Core i5-9400F outperforms Athlon II X4 651 by a whopping 164% based on our aggregate benchmark results.

Primary details

Comparing Athlon II X4 651 and Core i5-9400F processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking18301108
Place by popularitynot in top-10024
Cost-effectiveness evaluationno data9.41
Market segmentDesktop processorDesktop processor
Seriesno dataIntel Core i5
Power efficiency2.148.68
Architecture codenameLlano (2011−2012)Coffee Lake-R (2018−2019)
Release date14 November 2011 (13 years ago)7 January 2019 (5 years ago)
Launch price (MSRP)no data$182

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Athlon II X4 651 and Core i5-9400F 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)6 (Hexa-Core)
Threads46
Base clock speed3 GHz2.9 GHz
Boost clock speed3 GHz4.1 GHz
Bus typeno dataDMI 3.0
Bus rateno data4 × 8 GT/s
Multiplierno data29
L1 cache128 KB (per core)385 KB
L2 cache1 MB (per core)1.5 MB
L3 cache0 KB9 MB (shared)
Chip lithography32 nm14 nm
Die size228 mm2149 mm2
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors1,178 millionno data
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Athlon II X4 651 and Core i5-9400F 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 (Uniprocessor)
SocketFM1FCLGA1151
Power consumption (TDP)100 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon II X4 651 and Core i5-9400F. You'll probably need this information if you require some particular technology.

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

Security technologies

Athlon II X4 651 and Core i5-9400F technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+
Secure Keyno data+
MPX-+
Identity Protection-+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X4 651 and Core i5-9400F are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 651 and Core i5-9400F. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4-2666
Maximum memory sizeno data128 GB
Max memory channelsno data2
Maximum memory bandwidthno data42.671 GB/s

Peripherals

Specifications and connection of peripherals supported by Athlon II X4 651 and Core i5-9400F.

PCIe versionno data3.0
PCI Express lanesno data16

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 651 2.26
i5-9400F 5.96
+164%

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 651 3584
i5-9400F 9468
+164%

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 651 333
i5-9400F 1404
+322%

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 651 1108
i5-9400F 4908
+343%

Gaming performance

Pros & cons summary


Performance score 2.26 5.96
Recency 14 November 2011 7 January 2019
Physical cores 4 6
Threads 4 6
Chip lithography 32 nm 14 nm
Power consumption (TDP) 100 Watt 65 Watt

i5-9400F has a 163.7% higher aggregate performance score, an age advantage of 7 years, 50% more physical cores and 50% more threads, a 128.6% more advanced lithography process, and 53.8% lower power consumption.

The Core i5-9400F is our recommended choice as it beats the Athlon II X4 651 in performance tests.


Should you still have questions on choice between Athlon II X4 651 and Core i5-9400F, ask them in Comments section, and we shall answer.

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AMD Athlon II X4 651
Athlon II X4 651
Intel Core i5-9400F
Core i5-9400F

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Community ratings

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Questions & comments

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