A6-6400K vs Athlon II X4 740

Place in the ranking	2051	2501
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Series	Athlon	AMD A-Series (Desktop)
Power efficiency	no data	1.38
Architecture codename	Piledriver	Richland (2013−2014)
Release date	1 October 2012 (12 years ago)	1 June 2013 (11 years ago)
Launch price (MSRP)	$71	no data

Detailed specifications

Athlon II X4 740 and A6-6400K 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	3.2 GHz	3.9 GHz
Boost clock speed	3.7 GHz	4.1 GHz
L1 cache	192 KB	96 KB
L2 cache	4 MB	1024 KB
L3 cache	no data	0 KB
Chip lithography	32 nm	32 nm
Die size	no data	246 mm²
Maximum core temperature	no data	70 °C
Maximum case temperature (TCase)	no data	70 °C
Number of transistors	no data	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Athlon II X4 740 and A6-6400K 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 II X4 740 and A6-6400K. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX, SSE1-4a, AES, ABM, AVX, BMI1, AMD64, VT, EVP, Turbo Core 3.0
AES-NI	-	+
FMA	-	FMA4
AVX	-	+
PowerNow	-	+
PowerGating	-	+
VirusProtect	-	+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X4 740 and A6-6400K are enumerated here.

AMD-V	-	+
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 740 and A6-6400K. Depending on the motherboard, higher memory frequencies may be supported.

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

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	AMD Radeon HD 8470D
Number of pipelines	no data	192
Enduro	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Athlon II X4 740 and A6-6400K integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Athlon II X4 740 and A6-6400K integrated GPUs, sometimes API versions are included.

DirectX

no data

DirectX® 11

Peripherals

Specifications and connection of peripherals supported by Athlon II X4 740 and A6-6400K.

PCIe version

no data

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.

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 II X4 740 1.69
+77.9%

A6-6400K 0.95

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 II X4 740 2677
+78%

A6-6400K 1504