Pentium G640 vs A6-7400K

Primary details

Comparing A6-7400K and Pentium G640 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2450	2573
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.05
Market segment	Desktop processor	Desktop processor
Power efficiency	1.49	1.23
Architecture codename	Kaveri (2014−2015)	Sandy Bridge (2011−2013)
Release date	31 July 2014 (10 years ago)	3 June 2012 (12 years ago)
Launch price (MSRP)	no data	$179

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

A6-7400K and Pentium G640 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	3.5 GHz	2.8 GHz
Boost clock speed	3.9 GHz	2.8 GHz
Bus rate	no data	5 GT/s
L1 cache	128 KB	64 KB (per core)
L2 cache	1024 KB	256 KB (per core)
L3 cache	no data	3 MB (shared)
Chip lithography	28 nm	32 nm
Die size	245 mm2	131 mm2
Maximum core temperature	70 °C	69 °C
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	2,411 million	504 million
64 bit support	+	+
Windows 11 compatibility	no data	-
Unlocked multiplier	+	-

Compatibility

Information on A6-7400K and Pentium G640 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+	FCLGA1155
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A6-7400K and Pentium G640. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
FMA	+	-
AVX	+	+
FRTC	+	-
FreeSync	+	-
TrueAudio	+	-
PowerNow	+	-
PowerGating	+	-
Out-of-band client management	+	-
VirusProtect	+	-
HSA	+	-
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

A6-7400K and Pentium G640 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 A6-7400K and Pentium G640 are enumerated here.

AMD-V	+	-
VT-d	no data	-
VT-x	no data	+
EPT	no data	+
IOMMU 2.0	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by A6-7400K and Pentium G640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1866	DDR3
Maximum memory size	no data	32 GB
Max memory channels	2	2
Maximum memory bandwidth	no data	17 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	AMD Radeon R5 Graphics	Intel HD Graphics for 2nd Generation Intel Processors
iGPU core count	4	no data
Number of pipelines	256	no data
Enduro	+	-
Switchable graphics	+	-
UVD	+	-
VCE	+	-
Graphics max frequency	no data	1.1 GHz

Graphics interfaces

Available interfaces and connections of A6-7400K and Pentium G640 integrated GPUs.

Number of displays supported	no data	2
DisplayPort	+	-
HDMI	+	-

Graphics API support

APIs supported by A6-7400K and Pentium G640 integrated GPUs, sometimes API versions are included.

DirectX	DirectX® 12	no data
Vulkan	+	-

Peripherals

Specifications and connection of peripherals supported by A6-7400K and Pentium G640.

PCIe version	3.0	2.0
PCI Express lanes	16	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	1.03	0.85
Recency	31 July 2014	3 June 2012
Chip lithography	28 nm	32 nm

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Should you still have questions on choice between A6-7400K and Pentium G640, ask them in Comments section, and we shall answer.

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