Performance
A6-6400K
1,9985% of 36,991
Ryzen 9 3900741% better
16,80345% of 36,991
The Ryzen 9 3900 has 741% better performance than the A6-6400K for the 3DMark 11 Performance Physics benchmark.
Performance per dollar
A6-6400K
No data available
Ryzen 9 3900
33.6728% of 121.53
The Ryzen 9 3900 has 28% of the performance per dollar compared to the leader for the 3DMark 11 Performance Physics benchmark: Intel Core i5-13400F.
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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 AMD Ryzen 9 3900 CPU
The AMD Ryzen 9 3900 is a 12-core (24-thread) processor built for the desktop CPU market. It launched in Q3 2019 with a suggested retail price of $499. It is part of AMD's Ryzen 9 lineup, which is based on the Zen 2 microarchitecture. The 3900 is compatible with AMD Socket AM4 motherboards and is fabricated on TSMC's 7 nm manufacturing process.
Memory and Cache
The Ryzen 9 3900 supports DDR4 memory and features a dual-channel memory controller, allowing it to utilize 2 memory modules simultaneously. In terms of cache, the Ryzen 9 3900 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 512 KB, is larger but slower than the L1. Its L3 cache, a shared resource among the CPU's cores, has a capacity of 64 MB.
Cores and Clock Speeds
The Ryzen 9 3900 features 12 total cores which can process 24 threads simultaneously. The multi-threading capability allows the CPU to execute multiple computational tasks in parallel. The base clock speed of the CPU is 3.1 GHz, and it can boost up to 4.3 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 Ryzen 9 3900 does not include an integrated graphics solution. A dedicated graphics card will be required if you require a monitor with your computer.
Benchmark Performance & Value
The Ryzen 9 3900 has the 107th best 3DMark 11 Performance Physics score among the 721 benchmarked CPUs in our database. It achieves 45.42% of the performance of the best benchmarked CPU, the AMD Ryzen 9 7950X3D. Its 16,803 score and $499 launch price (MSRP) gives it a performance per dollar of 33.67. This is the 108th 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.
| Info | A6-6400K | Ryzen 9 3900 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Series | A6 | Ryzen 9 |
| Market Segment | Desktop | Desktop |
| Release Date | Q2 2013 | Q3 2019 |
| Launch Price (MSRP) | -- | $499 |
| Production Status | End-of-life | Active |
| Shop | Check Price | Check Price |
Benchmark Performance
#
Performance
A6-6400K
1,9985% of 36,991
Ryzen 9 3900741% better
16,80345% of 36,991
The Ryzen 9 3900 has 741% 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 Ryzen 9 3900 is ranked 107th with a score of 16,803.
Performance per dollar
A6-6400K
No data available
Ryzen 9 3900
33.6728% of 121.53
The Ryzen 9 3900 has 64% of the performance per dollar compared to the leader for the 3DMark 11 Performance Physics benchmark: AMD Ryzen 9 7950X3D.
Ryzen 9 3900's 33.67 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
| CPU | Benchmark Performance | |
|---|---|---|
| Core i7-11700K | 17,324 | +767% |
| Core i9-9900K | 17,264 | +764% |
| Ryzen 9 3900 | 16,803 | +741% |
| Ryzen 5 5600G | 16,538 | +728% |
| Core i7-6950X | 16,403 | +721% |
| A10-7700K | 3,853 | +93% |
| A8-7650K | 3,745 | +87% |
| A6-6400K | 1,998 | |
| A4-5300 | 1,924 | -4% |
| E2-1800 | 736 | -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 orRyzen 9 3900
| CPU | Performance Per Dollar | |
|---|---|---|
| Ryzen 9 5900X | 38.33 | +14% |
| Core i7-9700K | 38.07 | +13% |
| Ryzen 9 3900X | 37.94 | +13% |
| Core i9-9900KS | 36.44 | +8% |
| Core i9-9900K | 35.38 | +5% |
| Ryzen 9 3900 | 33.67 | |
| Core i9-11900KB | 33.03 | -2% |
| Ryzen 9 3950X | 28.06 | -17% |
| Ryzen 7 1800X | 27.62 | -18% |
| Core i7-8086K | 27.19 | -19% |
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
| Benchmark | A6-6400K | Ryzen 9 3900 |
|---|---|---|
| 3DMark 11 Performance Physics | 1,998 | 16,803 (+740.99%) |
| 3DMark Time Spy CPU | -- | 10,725 |
| Cinebench R15 Multi-Core | 149 | 2,804 (+1,781.88%) |
| Cinebench R15 Single-Core | 88 | 197 (+123.86%) |
| Geekbench 6.2 Multi-Core | 576 | 9,527 (+1,553.99%) |
| Geekbench 6.2 Single-Core | 410 | 1,652 (+302.93%) |
| CPU Mark Multi-Thread | 1,497 | 30,822 (+1,958.92%) |
| CPU Mark Single-Thread | 1,449 | 2,619 (+80.75%) |
Benchmarks Source: Notebookcheck
Technical Specs
#
Manufacturing Details
Information about the CPU's manufacturing like its foundry, process size, and transistor count.
| Spec | A6-6400K | Ryzen 9 3900 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Foundry | GlobalFoundries | TSMC |
| Process Size | 32 nm | 7 nm |
| Transistors | 1,303 million | 7,600 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.
| Spec | A6-6400K | Ryzen 9 3900 |
|---|---|---|
| Series | A6 | Ryzen 9 |
| Microarchitecture | Richland | Zen 2 |
| Codename | Richland | Matisse |
| Memory Support | DDR3 | DDR4 |
| Memory Channels | Dual-channel | Dual-channel |
| ECC Memory | No | No |
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.
| Spec | A6-6400K | Ryzen 9 3900 |
|---|---|---|
| Cores | 2 | 12 |
| Threads | 2 | 24 |
| Clock Speed | 3.9 GHz | 3.1 GHz |
| Turbo Clock | 4.1 GHz | 4.3 GHz |
| Base Clock | 100 MHz | 100 MHz |
| Multiplier | 39.0x | 31.0x |
| Multiplier Unlocked | Yes | Yes |
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.
| Spec | A6-6400K | Ryzen 9 3900 |
|---|---|---|
| L1 Cache | 96 KB | 64 KB |
| L2 Cache | 1 MB | 512 KB |
| L3 Cache | -- | 64 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.
| Spec | A6-6400K | Ryzen 9 3900 |
|---|---|---|
| Socket | AMD Socket FM2 | AMD Socket AM4 |
| PCI Express | PCIe 2.0 | PCIe 4.0 x24 |
| Thermal Design Power (TDP) | 65 W | 65 W |
| Package Power Tracking (PPT) | -- | 88 W |
| Tcase Max | 70 °C | -- |
| TJ Max | -- | 95 °C |
Graphics, Features, & Extensions
Additional CPU features like its bundled coolers, integrated graphics, and extensions/technologies.
| Spec | A6-6400K | Ryzen 9 3900 |
|---|---|---|
| Integrated Graphics | Radeon HD 8470D | -- |
| Extensions / Technologies | MMX, 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 3.0 | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AES, AVX, AVX2, BMI1, BMI2, SHA, F16C, FMA3, AMD64, EVP, AMD-V, SMAP, SMEP, SMT, Precision Boost 2, XFR 2 |
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* Performance rating, performance per dollar, and rankings are based on the 3DMark 11 Performance Physics benchmark and MSRP.