Celeron B840 vs A8-7650K

Primary details

Comparing A8-7650K and Celeron B840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1932	2787
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.24	no data
Market segment	Desktop processor	Laptop
Series	AMD A-Series (Desktop)	Intel Celeron
Power efficiency	1.96	1.65
Architecture codename	Kaveri (2014−2015)	Sandy Bridge (2011−2013)
Release date	7 January 2015 (9 years ago)	1 July 2011 (13 years ago)
Launch price (MSRP)	$152	$86

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

A8-7650K and Celeron B840 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)	2 (Dual-core)
Threads	4	2
Base clock speed	3.3 GHz	1.9 GHz
Boost clock speed	3.8 GHz	1.9 GHz
Bus type	no data	DMI 2.0
Bus rate	no data	4 × 5 GT/s
Multiplier	no data	19
L1 cache	256 KB	64K (per core)
L2 cache	4096 KB	256K (per core)
L3 cache	no data	2 MB (shared)
Chip lithography	28 nm	32 nm
Die size	245 mm2	131 mm2
Maximum core temperature	72 °C	100 °C
Number of transistors	2,411 million	504 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on A8-7650K and Celeron B840 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 (Uniprocessor)
Socket	FM2+	FCPGA988,PGA988
Power consumption (TDP)	95 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A8-7650K and Celeron B840. You'll probably need this information if you require some particular technology.

Instruction set extensions	SSE1-4a, AVX, AES, FMA4, VT	no data
AES-NI	+	-
FMA	+	+
AVX	+	-
FRTC	+	-
FreeSync	+	-
DualGraphics	+	-
TrueAudio	+	-
PowerNow	+	-
PowerGating	+	-
Out-of-band client management	+	-
VirusProtect	+	-
HSA	+	-
Enhanced SpeedStep (EIST)	no data	+
My WiFi	no data	+
Turbo Boost Technology	no data	-
Hyper-Threading Technology	no data	-
Idle States	no data	+
Thermal Monitoring	-	+
Flex Memory Access	no data	+
Demand Based Switching	no data	-
FDI	no data	+
Fast Memory Access	no data	+

Security technologies

A8-7650K and Celeron B840 technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	-
EDB	no data	+
Anti-Theft	no data	-

Virtualization technologies

Virtual machine speed-up technologies supported by A8-7650K and Celeron B840 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by A8-7650K and Celeron B840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-2133	DDR3
Maximum memory size	no data	16 GB
Max memory channels	2	2
Maximum memory bandwidth	no data	21.335 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	AMD Radeon R7 Graphics	Intel® HD Graphics for 2nd Generation Intel® Processors
iGPU core count	6	no data
Number of pipelines	384	no data
Enduro	+	-
Switchable graphics	+	-
UVD	+	-
VCE	+	-
Graphics max frequency	no data	1 GHz

Graphics interfaces

Available interfaces and connections of A8-7650K and Celeron B840 integrated GPUs.

Number of displays supported	no data	2
eDP	no data	+
DisplayPort	+	+
HDMI	+	+
SDVO	no data	+
CRT	no data	+

Graphics API support

APIs supported by A8-7650K and Celeron B840 integrated GPUs, sometimes API versions are included.

DirectX	DirectX® 12	no data
Vulkan	+	-

Peripherals

Specifications and connection of peripherals supported by A8-7650K and Celeron B840.

PCIe version	3.0	2.0
PCI Express lanes	16	16

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	1.97	0.61
Recency	7 January 2015	1 July 2011
Physical cores	4	2
Threads	4	2
Chip lithography	28 nm	32 nm
Power consumption (TDP)	95 Watt	35 Watt

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Should you still have questions on choice between A8-7650K and Celeron B840, ask them in Comments section, and we shall answer.

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