Ultra 5 245K vs A6-6400K
Aggregate performance score
Core Ultra 5 245K outperforms A6-6400K by a whopping 2817% based on our aggregate benchmark results.
Primary details
Comparing A6-6400K and Core Ultra 5 245K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2501 | 175 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 73.67 |
| Market segment | Desktop processor | Desktop processor |
| Series | AMD A-Series (Desktop) | no data |
| Power efficiency | 1.37 | 20.80 |
| Architecture codename | Richland (2013−2014) | Arrow Lake-S (2024−2025) |
| Release date | 1 June 2013 (11 years ago) | 24 October 2024 (recently) |
| Launch price (MSRP) | no data | $309 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
A6-6400K and Core Ultra 5 245K 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 | 2 (Dual-core) | 14 (Tetradeca-Core) |
| Threads | 2 | 14 |
| Base clock speed | 3.9 GHz | 4.2 GHz |
| Boost clock speed | 4.1 GHz | 5.2 GHz |
| Bus rate | no data | 159 MHz |
| L1 cache | 96 KB | 112 KB (per core) |
| L2 cache | 1024 KB | 3 MB (per core) |
| L3 cache | 0 KB | 24 MB (shared) |
| Chip lithography | 32 nm | 3 nm |
| Die size | 246 mm2 | 243 mm2 |
| Maximum core temperature | 70 °C | no data |
| Maximum case temperature (TCase) | 70 °C | no data |
| Number of transistors | 1,178 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | + | + |
Compatibility
Information on A6-6400K and Core Ultra 5 245K 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 | FM2 | 1851 |
| Power consumption (TDP) | 65 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A6-6400K and Core Ultra 5 245K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, SSE1-4a, AES, ABM, AVX, BMI1, AMD64, VT, EVP, Turbo Core 3.0 | no data |
| AES-NI | + | + |
| FMA | FMA4 | - |
| AVX | + | + |
| PowerNow | + | - |
| PowerGating | + | - |
| VirusProtect | + | - |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
| SIPP | - | + |
Security technologies
A6-6400K and Core Ultra 5 245K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by A6-6400K and Core Ultra 5 245K are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| IOMMU 2.0 | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A6-6400K and Core Ultra 5 245K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1866 | DDR5 |
| Max memory channels | 2 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon HD 8470D | Arc Xe-LPG Graphics 64EU |
| Number of pipelines | 192 | no data |
| Enduro | + | - |
| Switchable graphics | + | - |
| UVD | + | - |
| VCE | + | - |
Graphics interfaces
Available interfaces and connections of A6-6400K and Core Ultra 5 245K integrated GPUs.
| DisplayPort | + | - |
| HDMI | + | - |
Graphics API support
APIs supported by A6-6400K and Core Ultra 5 245K integrated GPUs, sometimes API versions are included.
| DirectX | DirectX® 11 | no data |
Peripherals
Specifications and connection of peripherals supported by A6-6400K and Core Ultra 5 245K.
| PCIe version | 2.0 | 5.0 |
| PCI Express lanes | no data | 20 |
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.
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.
Pros & cons summary
| Performance score | 0.96 | 28.00 |
| Recency | 1 June 2013 | 24 October 2024 |
| Physical cores | 2 | 14 |
| Threads | 2 | 14 |
| Chip lithography | 32 nm | 3 nm |
| Power consumption (TDP) | 65 Watt | 125 Watt |
A6-6400K has 92.3% lower power consumption.
Ultra 5 245K, on the other hand, has a 2816.7% higher aggregate performance score, an age advantage of 11 years, 600% more physical cores and 600% more threads, and a 966.7% more advanced lithography process.
The Core Ultra 5 245K is our recommended choice as it beats the A6-6400K in performance tests.
Should you still have questions on choice between A6-6400K and Core Ultra 5 245K, ask them in Comments section, and we shall answer.
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