Ryzen 9 9900X3D vs K6-2+ 450ACZ
Primary details
Comparing K6-2+ 450ACZ and Ryzen 9 9900X3D processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Series | AMD K6-2+ | no data |
| Architecture codename | Sharptooth (2000) | Granite Ridge (2024−2025) |
| Release date | 18 April 2000 (24 years ago) | 6 January 2025 (recently) |
| Launch price (MSRP) | $85 | no data |
Detailed specifications
K6-2+ 450ACZ and Ryzen 9 9900X3D 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 | 1 (Single-Core) | 16 (Hexadeca-Core) |
| Threads | 1 | 32 |
| Base clock speed | no data | 4.4 GHz |
| Boost clock speed | 0.45 GHz | 5.5 GHz |
| Bus type | FSB | no data |
| Bus rate | 100 MT/s | no data |
| Multiplier | 4.5 | no data |
| L1 cache | 64 KB | 80 KB (per core) |
| L2 cache | 128 KB | 1 MB (per core) |
| L3 cache | no data | 128 MB (shared) |
| Chip lithography | 180 nm | 4 nm |
| Die size | no data | 2x 70.6 mm2 |
| Maximum case temperature (TCase) | 85 °C | no data |
| Number of transistors | 21 million | 16,630 million |
| 64 bit support | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on K6-2+ 450ACZ and Ryzen 9 9900X3D 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 | AMD Super Socket 7 | AM5 |
| Power consumption (TDP) | 13 Watt | 120 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by K6-2+ 450ACZ and Ryzen 9 9900X3D. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| PowerNow | + | - |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by K6-2+ 450ACZ and Ryzen 9 9900X3D are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by K6-2+ 450ACZ and Ryzen 9 9900X3D. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | unknown Depends on motherboard | DDR5 |
| Maximum memory size | 4 GB | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | AMD Radeon Graphics |
Peripherals
Specifications and connection of peripherals supported by K6-2+ 450ACZ and Ryzen 9 9900X3D.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 24 |
Pros & cons summary
| Recency | 18 April 2000 | 6 January 2025 |
| Physical cores | 1 | 16 |
| Threads | 1 | 32 |
| Chip lithography | 180 nm | 4 nm |
| Power consumption (TDP) | 13 Watt | 120 Watt |
K6-2+ 450ACZ has 823.1% lower power consumption.
Ryzen 9 9900X3D, on the other hand, has an age advantage of 24 years, 1500% more physical cores and 3100% more threads, and a 4400% more advanced lithography process.
We couldn't decide between K6-2+ 450ACZ and Ryzen 9 9900X3D. We've got no test results to judge.
Should you still have questions on choice between K6-2+ 450ACZ and Ryzen 9 9900X3D, ask them in Comments section, and we shall answer.
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