Ryzen 5 PRO 8540U vs Athlon X4 840

Primary details

Comparing Athlon X4 840 and Ryzen 5 PRO 8540U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1782	576
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	7.38	8.35
Market segment	Desktop processor	Server
Series	4x Athlon	no data
Architecture codename	Kaveri (2014−2015)	Hawk Point
Release date	August 2014 (9 years ago)	16 April 2024 (less than a year ago)
Current price	$23	$1119

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 5 PRO 8540U has 13% better value for money than Athlon X4 840.

Detailed specifications

Athlon X4 840 and Ryzen 5 PRO 8540U 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 cores	4 (Quad-Core)	6 (Hexa-Core)
Threads	4	12
Base clock speed	3.1 GHz	3.2 GHz
Boost clock speed	3.8 GHz	4.9 GHz
L1 cache	256K	64 KB (per core)
L2 cache	4 MB	1 MB (per core)
L3 cache	no data	16 MB (shared)
Chip lithography	28 nm	4 nm
Die size	245 mm2	137 mm2
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	2,411 million	20,900 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	Yes	No

Compatibility

Information on Athlon X4 840 and Ryzen 5 PRO 8540U 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 configuration	1	1
Socket	Socket FM2+	FP7
Power consumption (TDP)	65 watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon X4 840 and Ryzen 5 PRO 8540U. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	+	no data
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon X4 840 and Ryzen 5 PRO 8540U are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon X4 840 and Ryzen 5 PRO 8540U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon 740M

Peripherals

Specifications and connection of peripherals supported by Athlon X4 840 and Ryzen 5 PRO 8540U.

PCIe version	3.0	4.0
PCI Express lanes	16	14

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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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.

Ryzen 5 PRO 8540U outperforms Athlon X4 840 by 481% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	2.15	12.49
Recency	on August 2014	16 April 2024
Physical cores	4	6
Threads	4	12
Chip lithography	28 nm	4 nm
Power consumption (TDP)	65 Watt	28 Watt

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Should you still have questions on choice between Athlon X4 840 and Ryzen 5 PRO 8540U, ask them in Comments section, and we shall answer.

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