Ultra 3 205 vs Ultra 5 115U
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1170 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Power efficiency | 18.48 | no data |
| Designer | Intel | Intel |
| Manufacturer | Intel | TSMC |
| Architecture codename | Meteor Lake (2023) | Arrow Lake-S (2024−2025) |
| Release date | 14 December 2023 (1 year ago) | August 2025 (recently) |
| Launch price (MSRP) | no data | $140 |
Detailed specifications
Core Ultra 5 115U and Core Ultra 3 205 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 | 8 (Octa-Core) | 8 (Octa-Core) |
| Threads | 10 | 8 |
| Base clock speed | 1.5 GHz | 3.8 GHz |
| Boost clock speed | 4.2 GHz | 4.9 GHz |
| L1 cache | 112 KB (per core) | 192 KB (per core) |
| L2 cache | 2 MB (per core) | 3 MB (per core) |
| L3 cache | 10 MB (shared) | 15 MB (shared) |
| Chip lithography | 7 nm | 3 nm |
| Die size | no data | 243 mm2 |
| Number of transistors | no data | 17,800 million |
| 64 bit support | + | + |
Compatibility
Information on Core Ultra 5 115U and Core Ultra 3 205 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 | Intel BGA 2049 | 1851 |
| Power consumption (TDP) | 15 Watt | 57 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 5 115U and Core Ultra 3 205. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| TSX | + | - |
Security technologies
Core Ultra 5 115U and Core Ultra 3 205 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 5 115U and Core Ultra 3 205 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 5 115U and Core Ultra 3 205. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 Depends on motherboard | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Arc Xe-LPG 48EU | Arc Xe-LPG Graphics 16EU |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 5 115U and Core Ultra 3 205.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 20 | 24 |
Pros & cons summary
| Threads | 10 | 8 |
| Chip lithography | 7 nm | 3 nm |
| Power consumption (TDP) | 15 Watt | 57 Watt |
Ultra 5 115U has 25% more threads, and 280% lower power consumption.
Ultra 3 205, on the other hand, has a 133.3% more advanced lithography process.
We couldn't decide between Intel Core Ultra 5 115U and Intel Core Ultra 3 205. We've got no test results to judge.
Be aware that Core Ultra 5 115U is a notebook processor while Core Ultra 3 205 is a desktop one.
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