Ultra 9 285K vs Pentium Extreme Edition 955
Primary details
Comparing Pentium Extreme Edition 955 and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 61 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 69.18 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | no data | 30.92 |
| Architecture codename | Presler (2005−2007) | Arrow Lake-S (2024−2025) |
| Release date | 27 December 2005 (18 years ago) | 24 October 2024 (recently) |
| Launch price (MSRP) | $999 | $589 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Pentium Extreme Edition 955 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 | 2 (Dual-core) | 24 (Tetracosa-Core) |
| Threads | 4 | 24 |
| Base clock speed | 3.466 GHz | 3.7 GHz |
| Boost clock speed | 0.47 GHz | 5.7 GHz |
| L1 cache | 16 KB (per core) | 112 KB (per core) |
| L2 cache | 2 MB (per core) | 3 MB (per core) |
| L3 cache | no data | 36 MB (shared) |
| Chip lithography | 65 nm | 3 nm |
| Die size | 2x 81 mm2 | no data |
| Maximum case temperature (TCase) | 69 °C | no data |
| Number of transistors | 376 million | no data |
| 64 bit support | + | + |
| Unlocked multiplier | + | + |
Compatibility
Information on Pentium Extreme Edition 955 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 | 1 | 1 |
| Socket | 775 | 1851 |
| Power consumption (TDP) | 130 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium Extreme Edition 955 and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
Security technologies
Pentium Extreme Edition 955 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 Pentium Extreme Edition 955 and Core Ultra 9 285K are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium Extreme Edition 955 and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 Depends on motherboard | DDR5 Depends on motherboard |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | Arc Xe-2 Graphics 64EU |
Peripherals
Specifications and connection of peripherals supported by Pentium Extreme Edition 955 and Core Ultra 9 285K.
| PCIe version | no data | 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.
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
| Recency | 27 December 2005 | 24 October 2024 |
| Physical cores | 2 | 24 |
| Threads | 4 | 24 |
| Chip lithography | 65 nm | 3 nm |
| Power consumption (TDP) | 130 Watt | 125 Watt |
Ultra 9 285K has an age advantage of 18 years, 1100% more physical cores and 500% more threads, a 2066.7% more advanced lithography process, and 4% lower power consumption.
We couldn't decide between Pentium Extreme Edition 955 and Core Ultra 9 285K. We've got no test results to judge.
Should you still have questions on choice between Pentium Extreme Edition 955 and Core Ultra 9 285K, ask them in Comments section, and we shall answer.
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