Athlon X4 840 vs FX-8300

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Aggregate performance score

FX-8300
2012
8 cores / 8 threads, 95 Watt
3.36
+60.8%
Athlon X4 840
2014
4 cores / 4 threads, 65 Watt
2.09

FX-8300 outperforms Athlon X4 840 by an impressive 61% based on our aggregate benchmark results.

Primary details

Comparing FX-8300 and Athlon X4 840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking15771890
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Seriesno data4x Athlon
Power efficiency3.353.04
Architecture codenameVishera (2012−2015)Kaveri (2014−2015)
Release date23 October 2012 (12 years ago)August 2014 (10 years ago)

Detailed specifications

FX-8300 and Athlon X4 840 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 cores8 (Octa-Core)4 (Quad-Core)
Threads84
Base clock speed3.3 GHz3.1 GHz
Boost clock speed4.2 GHz3.8 GHz
L1 cacheno data256K
L2 cache8192 KB4 MB
Chip lithography32 nm28 nm
Die size315 mm2245 mm2
Maximum core temperature71 °Cno data
Maximum case temperature (TCase)no data72 °C
Number of transistors1,200 million2,411 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier++
P0 Vcore voltageMin: 1.075 V - Max: 1.2875 Vno data

Compatibility

Information on FX-8300 and Athlon X4 840 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
SocketAM3+Socket FM2+
Power consumption (TDP)95 Watt65 watt

Technologies and extensions

Technological solutions and additional instructions supported by FX-8300 and Athlon X4 840. You'll probably need this information if you require some particular technology.

AES-NI++
FMA++
AVX++

Virtualization technologies

Virtual machine speed-up technologies supported by FX-8300 and Athlon X4 840 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by FX-8300 and Athlon X4 840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)no data

Peripherals

Specifications and connection of peripherals supported by FX-8300 and Athlon X4 840.

PCIe versionn/a3.0
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.

FX-8300 3.36
+60.8%
Athlon X4 840 2.09

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.

FX-8300 5339
+60.9%
Athlon X4 840 3318

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.

FX-8300 457
+2%
Athlon X4 840 448

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.

FX-8300 1722
+53.8%
Athlon X4 840 1120

Gaming performance

Pros & cons summary


Performance score 3.36 2.09
Recency 23 October 2012 on August 2014
Physical cores 8 4
Threads 8 4
Chip lithography 32 nm 28 nm
Power consumption (TDP) 95 Watt 65 Watt

FX-8300 has a 60.8% higher aggregate performance score, and 100% more physical cores and 100% more threads.

Athlon X4 840, on the other hand, has an age advantage of 1 year, a 14.3% more advanced lithography process, and 46.2% lower power consumption.

The FX-8300 is our recommended choice as it beats the Athlon X4 840 in performance tests.


Should you still have questions on choice between FX-8300 and Athlon X4 840, ask them in Comments section, and we shall answer.

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AMD FX-8300
FX-8300
AMD Athlon X4 840
Athlon X4 840

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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

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