A8-7650K vs A6-6400K

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Aggregate performance score

A6-6400K
2013
2 cores / 2 threads, 65 Watt
0.95
A8-7650K
2015
4 cores / 4 threads, 95 Watt
1.97
+107%

A8-7650K outperforms A6-6400K by a whopping 107% based on our aggregate benchmark results.

Primary details

Comparing A6-6400K and A8-7650K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking25011930
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data0.24
Market segmentDesktop processorDesktop processor
SeriesAMD A-Series (Desktop)AMD A-Series (Desktop)
Power efficiency1.381.96
Architecture codenameRichland (2013−2014)Kaveri (2014−2015)
Release date1 June 2013 (11 years ago)7 January 2015 (9 years ago)
Launch price (MSRP)no data$152

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

A6-6400K and A8-7650K 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 cores2 (Dual-core)4 (Quad-Core)
Threads24
Base clock speed3.9 GHz3.3 GHz
Boost clock speed4.1 GHz3.8 GHz
L1 cache96 KB256 KB
L2 cache1024 KB4096 KB
L3 cache0 KBno data
Chip lithography32 nm28 nm
Die size246 mm2245 mm2
Maximum core temperature70 °C72 °C
Maximum case temperature (TCase)70 °Cno data
Number of transistors1,178 million2,411 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier++

Compatibility

Information on A6-6400K and A8-7650K 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 configuration11
SocketFM2FM2+
Power consumption (TDP)65 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A6-6400K and A8-7650K. You'll probably need this information if you require some particular technology.

Instruction set extensionsMMX, SSE1-4a, AES, ABM, AVX, BMI1, AMD64, VT, EVP, Turbo Core 3.0SSE1-4a, AVX, AES, FMA4, VT
AES-NI++
FMAFMA4+
AVX++
FRTC-+
FreeSync-+
DualGraphics-+
TrueAudio-+
PowerNow++
PowerGating++
Out-of-band client management-+
VirusProtect++
HSA-+

Virtualization technologies

Virtual machine speed-up technologies supported by A6-6400K and A8-7650K are enumerated here.

AMD-V++
IOMMU 2.0++

Memory specs

Types, maximum amount and channel quantity of RAM supported by A6-6400K and A8-7650K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3-1866DDR3-2133
Max memory channels22

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon HD 8470DAMD Radeon R7 Graphics
iGPU core countno data6
Number of pipelines192384
Enduro++
Switchable graphics++
UVD++
VCE++

Graphics interfaces

Available interfaces and connections of A6-6400K and A8-7650K integrated GPUs.

DisplayPort++
HDMI++

Graphics API support

APIs supported by A6-6400K and A8-7650K integrated GPUs, sometimes API versions are included.

DirectXDirectX® 11DirectX® 12
Vulkan-+

Peripherals

Specifications and connection of peripherals supported by A6-6400K and A8-7650K.

PCIe version2.03.0
PCI Express lanesno data16

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.

A6-6400K 0.95
A8-7650K 1.97
+107%

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.

A6-6400K 1504
A8-7650K 3123
+108%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

A6-6400K 410
A8-7650K 420
+2.4%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

A6-6400K 576
A8-7650K 1041
+80.7%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

A6-6400K 3068
+5.6%
A8-7650K 2904

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

A6-6400K 5079
A8-7650K 9456
+86.2%

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

A6-6400K 2654
A8-7650K 4410
+66.2%

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

A6-6400K 2
A8-7650K 3
+102%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

A6-6400K 149
A8-7650K 296
+98.7%

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

A6-6400K 88
+4.8%
A8-7650K 84

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

A6-6400K 0.83
A8-7650K 0.96
+15.7%

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

A6-6400K 1
A8-7650K 2
+108%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

A6-6400K 11
A8-7650K 23
+103%

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

A6-6400K 57
A8-7650K 108
+89.8%

Gaming performance

Pros & cons summary


Performance score 0.95 1.97
Recency 1 June 2013 7 January 2015
Physical cores 2 4
Threads 2 4
Chip lithography 32 nm 28 nm
Power consumption (TDP) 65 Watt 95 Watt

A6-6400K has 46.2% lower power consumption.

A8-7650K, on the other hand, has a 107.4% higher aggregate performance score, an age advantage of 1 year, 100% more physical cores and 100% more threads, and a 14.3% more advanced lithography process.

The A8-7650K is our recommended choice as it beats the A6-6400K in performance tests.


Should you still have questions on choice between A6-6400K and A8-7650K, ask them in Comments section, and we shall answer.

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AMD A6-6400K
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