PRO A4-8350B vs Athlon X4 840

Place in the ranking	1872	2431
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Series	4x Athlon	no data
Power efficiency	3.04	1.51
Architecture codename	Kaveri (2014−2015)	Kaveri (2014−2015)
Release date	August 2014 (10 years ago)	29 September 2015 (9 years ago)

Detailed specifications

Athlon X4 840 and PRO A4-8350B 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	3.1 GHz	3.5 GHz
Boost clock speed	3.8 GHz	3.9 GHz
L1 cache	256K	no data
L2 cache	4 MB	1024 KB
Chip lithography	28 nm	28 nm
Die size	245 mm²	245 mm²
Maximum core temperature	no data	71 °C
Maximum case temperature (TCase)	72 °C	72 °C
Number of transistors	2,411 million	2,411 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	+	-

Compatibility

Information on Athlon X4 840 and PRO A4-8350B 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+	FM2+
Power consumption (TDP)	65 watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon X4 840 and PRO A4-8350B. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	+	+
AVX	+	+
FRTC	-	+
FreeSync	-	+
PowerTune	-	+
DualGraphics	-	+
TrueAudio	-	+
PowerNow	-	+
PowerGating	-	+
Out-of-band client management	-	+
VirusProtect	-	+
RAID	-	+
HSA	-	+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon X4 840 and PRO A4-8350B are enumerated here.

AMD-V	+	+
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon X4 840 and PRO A4-8350B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-1866
Max memory channels	no data	2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	AMD Radeon R5 Graphics
iGPU core count	no data	4
Number of pipelines	no data	256
Enduro	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Athlon X4 840 and PRO A4-8350B integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Athlon X4 840 and PRO A4-8350B integrated GPUs, sometimes API versions are included.

DirectX	no data	DirectX® 12
Vulkan	-	+

Peripherals

Specifications and connection of peripherals supported by Athlon X4 840 and PRO A4-8350B.

PCIe version	3.0	3.0
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.

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.

Athlon X4 840 2.13
+101%

PRO A4-8350B 1.06

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Athlon X4 840 3325
+101%

PRO A4-8350B 1651