Phenom II X4 840 vs A10-7850K

Primary details

Comparing A10-7850K and Phenom II X4 840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1757	2030
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.55	3.08
Market segment	Desktop processor	Desktop processor
Series	AMD A-Series (Desktop)	no data
Architecture codename	Godaveri (2014−2018)	Propus (2009−2011)
Release date	14 January 2014 (10 years ago)	4 January 2011 (13 years ago)
Launch price (MSRP)	$173	$90
Current price	$92 (0.5x MSRP)	$40 (0.4x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Phenom II X4 840 has 460% better value for money than A10-7850K.

Detailed specifications

A10-7850K and Phenom II 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 cores	4 (Quad-Core)	4 (Quad-Core)
Threads	4	4
Base clock speed	3.7 GHz	3.2 GHz
Boost clock speed	4 GHz	3.2 GHz
L1 cache	256 KB	128 KB (per core)
L2 cache	4096 KB	512 KB (per core)
L3 cache	0 KB	0 KB
Chip lithography	28 nm	45 nm
Die size	246 mm2	169 mm2
Maximum core temperature	72 °C	no data
Maximum case temperature (TCase)	74 °C	no data
Number of transistors	1,178 million	300 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	Yes	No

Compatibility

Information on A10-7850K and Phenom II 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 configuration	1	1
Socket	FM2+	AM3
Power consumption (TDP)	95 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A10-7850K and Phenom II X4 840. You'll probably need this information if you require some particular technology.

Instruction set extensions	SSE1-4A, AVX, FM4A, VT	no data
AES-NI	1	no data
FMA	FMA4	no data
AVX	+	no data
FRTC	1	no data
FreeSync	1	no data
PowerTune	-	no data
DualGraphics	1	no data
TrueAudio	+	no data
PowerNow	+	no data
PowerGating	+	no data
Out-of-band client management	+	no data
VirusProtect	+	no data
HSA	1	no data

Virtualization technologies

Virtual machine speed-up technologies supported by A10-7850K and Phenom II X4 840 are enumerated here.

AMD-V	+	no data
IOMMU 2.0	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by A10-7850K and Phenom II X4 840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-2133	DDR3
Max memory channels	2	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	AMD Radeon R7 Graphics	no data
iGPU core count	8	no data
Number of pipelines	512	no data
Enduro	+	no data
Switchable graphics	1	no data
UVD	+	no data
VCE	+	no data

Graphics interfaces

Available interfaces and connections of A10-7850K and Phenom II X4 840 integrated GPUs.

DisplayPort	+	no data
HDMI	+	no data

Graphics API support

APIs supported by A10-7850K and Phenom II X4 840 integrated GPUs, sometimes API versions are included.

DirectX	DirectX® 12	no data
Vulkan	1	no data

Peripherals

Specifications and connection of peripherals supported by A10-7850K and Phenom II X4 840.

PCIe version

3.0

2.0

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.

A10-7850K outperforms Phenom II X4 840 by 42% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	2.20	1.55
Recency	14 January 2014	4 January 2011
Cost	$173	$90
Chip lithography	28 nm	45 nm

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Should you still have questions on choice between A10-7850K and Phenom II X4 840, ask them in Comments section, and we shall answer.

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