AMD A6-6400K vs Intel Core i5-8400

VS
Performance
A6-6400K
1,9985% of 36,991
Core i5-8400373% better
9,45326% of 36,991

The Core i5-8400 has 373% better performance than the A6-6400K for the 3DMark 11 Performance Physics benchmark.

Performance per dollar
A6-6400K
No data available
Core i5-8400
51.9443% of 121.53

The Core i5-8400 has 43% of the performance per dollar compared to the leader for the 3DMark 11 Performance Physics benchmark: Intel Core i5-13400F.

Shop Core i5-8400
As an Amazon Associate I earn from qualifying purchases.

Summary

#

About the AMD A6-6400K CPU

The AMD A6-6400K is an end-of-life 2-core (2-thread) processor built for the desktop CPU market. It launched in Q2 2013. It is part of AMD's A6 lineup, which is based on the Richland microarchitecture. The A6-6400K is compatible with AMD Socket FM2 motherboards and is fabricated on GlobalFoundries's 32 nm manufacturing process. It features the Radeon HD 8470D integrated graphics solution.

Memory and Cache

The A6-6400K supports DDR3 memory and features a dual-channel memory controller, allowing it to utilize 2 memory modules simultaneously. In terms of cache, the A6-6400K has multiple levels of cache. Its L1 cache, which is the smallest and fastest, is 96 KB in size, providing rapid access to crucial instructions. Its L2 cache, at 1 MB, is larger but slower than the L1.

Cores and Clock Speeds

The A6-6400K features 2 total cores which can process 2 threads simultaneously. The multi-threading capability allows the CPU to execute multiple computational tasks in parallel. The base clock speed of the CPU is 3.9 GHz, and it can boost up to 4.1 GHz under heavy workloads. Higher clock speeds result in better performance for the same microarchitecture. The multiplier is unlocked, enabling overclocking for those seeking to push the CPU's performance further.

Integrated Graphics

The A6-6400K includes an integrated graphics solution called Radeon HD 8470D. This graphics processor is directly integrated into the CPU and is not as powerful as a dedicated graphics card. While integrated graphics can handle basic tasks like web browsing and office applications, it is not suitable for more demanding activities such as gaming or video editing, where a dedicated graphics card offers superior performance.

Benchmark Performance

The A6-6400K has the 615th best 3DMark 11 Performance Physics score among the 721 benchmarked CPUs in our database. It achieves 5.40% of the performance of the best benchmarked CPU, the AMD Ryzen 9 7950X3D.

About the Intel Core i5-8400 CPU

The Intel Core i5-8400 is an end-of-life 6-core (6-thread) processor built for the desktop CPU market. It launched in Q4 2017 with a suggested retail price of $182. It is part of Intel's Core i5 lineup, which is based on the Coffee Lake microarchitecture. The i5-8400 is compatible with Intel Socket 1151 motherboards and is fabricated on Intel's 14 nm manufacturing process. It features the UHD Graphics 630 integrated graphics solution.

Memory and Cache

The Core i5-8400 supports DDR4 memory and features a dual-channel memory controller, allowing it to utilize 2 memory modules simultaneously. In terms of cache, the Core i5-8400 has multiple levels of cache. Its L1 cache, which is the smallest and fastest, is 64 KB in size, providing rapid access to crucial instructions. Its L2 cache, at 256 KB, is larger but slower than the L1. Its L3 cache, a shared resource among the CPU's cores, has a capacity of 9 MB.

Cores and Clock Speeds

The Core i5-8400 features 6 total cores which can process 6 threads simultaneously. The multi-threading capability allows the CPU to execute multiple computational tasks in parallel. The base clock speed of the CPU is 2.8 GHz, and it can boost up to 4.0 GHz under heavy workloads. Higher clock speeds result in better performance for the same microarchitecture. The multiplier is locked, making it incapable of overclocking for pushing performance further.

Integrated Graphics

The Core i5-8400 includes an integrated graphics solution called UHD Graphics 630. This graphics processor is directly integrated into the CPU and is not as powerful as a dedicated graphics card. While integrated graphics can handle basic tasks like web browsing and office applications, it is not suitable for more demanding activities such as gaming or video editing, where a dedicated graphics card offers superior performance.

Benchmark Performance & Value

The Core i5-8400 has the 262nd best 3DMark 11 Performance Physics score among the 721 benchmarked CPUs in our database. It achieves 25.55% of the performance of the best benchmarked CPU, the AMD Ryzen 9 7950X3D. Its 9,453 score and $182 launch price (MSRP) gives it a performance per dollar of 51.94. This is the 42nd best in value for the 3DMark 11 Perf. Physics benchmark.

General Info

General overview of the CPU, including details like its manufacturer, release date, launch price, and current production status.

InfoA6-6400KCore i5-8400
ManufacturerAMDIntel
SeriesA6Core i5
Market SegmentDesktopDesktop
Release DateQ2 2013Q4 2017
Launch Price (MSRP)--$182
Production StatusEnd-of-lifeEnd-of-life
ShopCheck PriceCheck Price

Benchmark Performance

#
Performance
A6-6400K
1,9985% of 36,991
Core i5-8400373% better
9,45326% of 36,991

The Core i5-8400 has 373% better performance than the A6-6400K for the 3DMark 11 Performance Physics benchmark.

The A6-6400K is ranked 615th with a score of 1,998, and the Core i5-8400 is ranked 262nd with a score of 9,453.

Performance per dollar
A6-6400K
No data available
Core i5-8400
51.9443% of 121.53

The Core i5-8400 has 98% of the performance per dollar compared to the leader for the 3DMark 11 Performance Physics benchmark: AMD Ryzen 9 7950X3D.

Core i5-8400's 51.94 performance per dollar ranks it 0th among the other benchmarked CPUs in our database.

Relative Performance

The average score in the benchmark test can be compared to similar CPUs to assess relative performance. Generally, powerful CPUs tend to have higher scores.

Choose Baseline CPU:A6-6400K or
CPUBenchmark Performance
Ryzen 5 1500X9,566+379%
Core i7-37709,502+376%
Core i5-84009,453+373%
Core i7-3770K9,216.5+361%
Core i7-47909,133+357%
A10-7700K3,853+93%
A8-7650K3,745+87%
A6-6400K1,998
A4-53001,924-4%
E2-1800736-63%

Relative Value For Money

The average performance per dollar in the benchmark test can be compared to similar CPUs to assess relative value. A higher score implies a better value for your money.

Choose Baseline CPU:A6-6400K orCore i5-8400
CPUPerformance Per Dollar
Ryzen 5 5600G63.85+23%
Core i5-11600K62.52+20%
Ryzen 5 260062.34+20%
Ryzen 3 120054.82+6%
Ryzen 5 2600X52.72+2%
Core i5-840051.94
Ryzen 5 160050.98-2%
Ryzen 5 1500X50.61-3%
Ryzen 5 2400G48.76-6%
Ryzen 7 270046.69-10%

Benchmark Scores

This table showcases the average performance scores achieved by both CPUs across industry-standard benchmark tests. These scores provide a valuable insight into overall performance. Powerful CPUs tend to have higher scores.

  • Popular
BenchmarkA6-6400KCore i5-8400
3DMark 11 Performance Physics
1,998
9,453
(+373.12%)
3DMark Time Spy CPU
--
4,940.5
Cinebench R15 Multi-Core
149
941
(+531.54%)
Cinebench R15 Single-Core
88
169.5
(+92.61%)
Geekbench 6.2 Multi-Core
576
4,795
(+732.47%)
Geekbench 6.2 Single-Core
410
1,372
(+234.63%)
CPU Mark Multi-Thread
1,497
9,234
(+516.83%)
CPU Mark Single-Thread
1,449
2,382
(+64.39%)
Benchmarks Source: Notebookcheck

Technical Specs

#

Manufacturing Details

Information about the CPU's manufacturing like its foundry, process size, and transistor count.

SpecA6-6400KCore i5-8400
ManufacturerAMDIntel
FoundryGlobalFoundriesIntel
Process Size32 nm14 nm
Transistors1,303 million--

Architecture

CPU architecture specs like its memory channels, memory support, and microarchitecture. Newer CPU architectures can minimize bottlenecks and improve execution efficiency using more advanced techniques.

SpecA6-6400KCore i5-8400
SeriesA6Core i5
MicroarchitectureRichlandCoffee Lake
CodenameRichlandCoffee Lake
Memory SupportDDR3DDR4
Memory ChannelsDual-channelDual-channel
ECC MemoryNoNo

Cores & Clock Speeds

Processing power information like its cores and clock speed. These specs impact how fast they can handle instructions and tasks. These have a strong impact on the CPU's performance.

SpecA6-6400KCore i5-8400
Cores26
Threads26
Clock Speed3.9 GHz2.8 GHz
Turbo Clock4.1 GHz4.0 GHz
Base Clock100 MHz100 MHz
Multiplier39.0x28.0x
Multiplier UnlockedYesNo

Cache

CPU cache specs like its L1 & L2 cache. These provide the CPU with a small, but super-fast memory access. A larger cache can improve a CPU's performance.

SpecA6-6400KCore i5-8400
L1 Cache96 KB64 KB
L2 Cache1 MB256 KB
L3 Cache--9 MB

Compatibility & Power Consumption

Compatibility and power consumption information like its socket type, thermal design power, power limits. These can help verify the CPU's compatibility with other PC components.

SpecA6-6400KCore i5-8400
SocketAMD Socket FM2Intel Socket 1151
PCI ExpressPCIe 2.0PCIe 3.0 x16
Thermal Design Power (TDP)65 W65 W
Tcase Max70 °C72 °C
TJ Max--100 °C

Graphics, Features, & Extensions

Additional CPU features like its bundled coolers, integrated graphics, and extensions/technologies.

SpecA6-6400KCore i5-8400
Integrated GraphicsRadeon HD 8470DUHD Graphics 630
Extensions / TechnologiesMMX, 3DNow!, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AES, AVX, BMI1, FMA3, FMA4, AMD64, CLMUL, CnQ, NX bit, AMD-V, XOP, ABM, TBM, F16C, PowerNow!, Turbo Core 3.0MMX, SSE, SSE2, SSE3, SSSE3, SSE4.2, AVX, AVX2, EIST, Intel 64, XD bit, VT-x, VT-d, AES-NI, TSX, TXT, CLMUL, FMA3, F16C, BMI1, BMI2, Boost 2.0

Check out these comparisons for similar CPUs:

Looking for alternatives? Check out these similar CPUs:

* Performance rating, performance per dollar, and rankings are based on the 3DMark 11 Performance Physics benchmark and MSRP.