Ryzen 9 5900X vs Athlon 300U
Aggregate performance score
Ryzen 9 5900X outperforms Athlon 300U by a whopping 910% based on our aggregate benchmark results.
Primary details
Comparing Athlon 300U and Ryzen 9 5900X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1753 | 199 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 31.06 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Athlon | AMD Ryzen 9 |
| Power efficiency | 15.38 | 22.20 |
| Architecture codename | Raven Ridge 2 (2019) | Vermeer (Zen3) (2020−2022) |
| Release date | 6 January 2019 (5 years ago) | 8 October 2020 (4 years ago) |
| Launch price (MSRP) | no data | $549 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon 300U and Ryzen 9 5900X 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) | 12 (Dodeca-Core) |
| Threads | 4 | 24 |
| Base clock speed | 2.4 GHz | 3.7 GHz |
| Boost clock speed | 3.3 GHz | 4.8 GHz |
| Bus type | PCIe 3.0 | no data |
| Multiplier | 24 | 37 |
| L1 cache | 192 KB | 768 KB |
| L2 cache | 1 MB | 6 MB |
| L3 cache | 4 MB (shared) | 64 MB |
| Chip lithography | 14 nm | 7 nm, 12 nm |
| Die size | 209.78 mm2 | 2x 74 mm2(CCD) + 125 mm2 (IOD) |
| Maximum case temperature (TCase) | no data | 95 °C |
| Number of transistors | 4940 Million | 0 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Athlon 300U and Ryzen 9 5900X 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 (Uniprocessor) | 1 |
| Socket | FP5 | AM4 |
| Power consumption (TDP) | 15 Watt | 105 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon 300U and Ryzen 9 5900X. You'll probably need this information if you require some particular technology.
| Instruction set extensions | XFR, FMA3, SSE 4.2, AVX2, SMT | 86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2 |
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon 300U and Ryzen 9 5900X are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon 300U and Ryzen 9 5900X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Dual-channel | DDR4-3200 |
| Maximum memory size | 64 GB | 128 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 38.397 GB/s | 51.196 GB/s |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon RX Vega 3 | - |
Peripherals
Specifications and connection of peripherals supported by Athlon 300U and Ryzen 9 5900X.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 12 | no data |
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.
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.
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.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
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.
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.
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.
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.
WinRAR 4.0
WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.
Geekbench 5.5 Multi-Core
Geekbench 5.5 Single-Core
WebXPRT 3
Pros & cons summary
| Performance score | 2.53 | 25.56 |
| Recency | 6 January 2019 | 8 October 2020 |
| Physical cores | 2 | 12 |
| Threads | 4 | 24 |
| Chip lithography | 14 nm | 7 nm |
| Power consumption (TDP) | 15 Watt | 105 Watt |
Athlon 300U has 600% lower power consumption.
Ryzen 9 5900X, on the other hand, has a 910.3% higher aggregate performance score, an age advantage of 1 year, 500% more physical cores and 500% more threads, and a 100% more advanced lithography process.
The Ryzen 9 5900X is our recommended choice as it beats the Athlon 300U in performance tests.
Be aware that Athlon 300U is a notebook processor while Ryzen 9 5900X is a desktop one.
Should you still have questions on choice between Athlon 300U and Ryzen 9 5900X, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
