Ultra 9 285K vs Ryzen 9 7840HX
Primary details
Comparing Ryzen 9 7840HX and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 53 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 69.52 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Dragon Range (Zen 4, Ryzen 7045) | no data |
| Power efficiency | no data | 32.38 |
| Architecture codename | Dragon Range-HX (Zen 4) (2023−2024) | Arrow Lake-S (2024−2025) |
| Release date | 17 January 2024 (less than a year ago) | 24 October 2024 (recently) |
| Launch price (MSRP) | no data | $589 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 9 7840HX and Core Ultra 9 285K 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 | 12 (Dodeca-Core) | 24 (Tetracosa-Core) |
| Threads | 24 | 24 |
| Base clock speed | 2.9 GHz | 3.7 GHz |
| Boost clock speed | 5.1 GHz | 5.7 GHz |
| Bus rate | no data | 250 MHz |
| L1 cache | 768 KB | 112 KB (per core) |
| L2 cache | 12 MB | 3 MB (per core) |
| L3 cache | 64 MB | 36 MB (shared) |
| Chip lithography | 5 nm | 3 nm |
| Die size | no data | 243 mm2 |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | 9900 Million | 17,800 million |
| 64 bit support | + | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Ryzen 9 7840HX and Core Ultra 9 285K 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 | no data | 1 |
| Socket | FL1 | 1851 |
| Power consumption (TDP) | 55 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 7840HX and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME | no data |
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
Security technologies
Ryzen 9 7840HX and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 7840HX and Core Ultra 9 285K are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7840HX and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 Depends on motherboard |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 610M | Arc Xe-LPG Graphics 64EU |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 7840HX and Core Ultra 9 285K.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Recency | 17 January 2024 | 24 October 2024 |
| Physical cores | 12 | 24 |
| Chip lithography | 5 nm | 3 nm |
| Power consumption (TDP) | 55 Watt | 125 Watt |
Ryzen 9 7840HX has 127.3% lower power consumption.
Ultra 9 285K, on the other hand, has an age advantage of 9 months, 100% more physical cores, and a 66.7% more advanced lithography process.
We couldn't decide between Ryzen 9 7840HX and Core Ultra 9 285K. We've got no test results to judge.
Be aware that Ryzen 9 7840HX is a notebook processor while Core Ultra 9 285K is a desktop one.
Should you still have questions on choice between Ryzen 9 7840HX and Core Ultra 9 285K, ask them in Comments section, and we shall answer.
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