A9-9420e vs Pentium G840

Primary details

Comparing Pentium G840 and A9-9420e processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2604	2703
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	4.61	no data
Market segment	Desktop processor	Laptop
Series	no data	AMD Bristol Ridge
Power efficiency	1.16	4.40
Architecture codename	Sandy Bridge (2011−2013)	Stoney Ridge (2016−2019)
Release date	22 May 2011 (13 years ago)	1 June 2018 (6 years ago)
Launch price (MSRP)	$60	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium G840 and A9-9420e 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	2 (Dual-core)	2 (Dual-core)
Threads	2	2
Base clock speed	2.8 GHz	no data
Boost clock speed	2.8 GHz	no data
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	1 MB
L3 cache	3 MB (shared)	no data
Chip lithography	32 nm	28 nm
Die size	131 mm2	124.5 mm2
Maximum core temperature	69 °C	90 °C
Number of transistors	504 million	1200 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Pentium G840 and A9-9420e 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	no data
Socket	FCLGA1155	BGA
Power consumption (TDP)	65 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G840 and A9-9420e. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Virtualization,
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Pentium G840 and A9-9420e technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium G840 and A9-9420e are enumerated here.

AMD-V	-	+
VT-d	-	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G840 and A9-9420e. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	AMD Radeon R5 (Stoney Ridge)
Graphics max frequency	1.1 GHz	no data

Graphics interfaces

Available interfaces and connections of Pentium G840 and A9-9420e integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Pentium G840 and A9-9420e.

PCIe version

2.0

no data

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.

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Pros & cons summary

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Performance score	0.80	0.70
Recency	22 May 2011	1 June 2018
Chip lithography	32 nm	28 nm
Power consumption (TDP)	65 Watt	15 Watt

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Should you still have questions on choice between Pentium G840 and A9-9420e, ask them in Comments section, and we shall answer.

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