Ultra 5 245KF vs Opteron 156
Primary details
Comparing Opteron 156 and Core Ultra 5 245KF processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 176 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 81.94 |
| Market segment | Server | Desktop processor |
| Power efficiency | no data | 20.74 |
| Architecture codename | Venus (2004−2005) | Arrow Lake-S (2024−2025) |
| Release date | 4 May 2005 (19 years ago) | 24 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $294 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Opteron 156 and Core Ultra 5 245KF 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) | 14 (Tetradeca-Core) |
| Threads | 1 | 14 |
| Base clock speed | 3 GHz | 4.2 GHz |
| Boost clock speed | 3 GHz | 5.2 GHz |
| L1 cache | 128 KB | 112 KB (per core) |
| L2 cache | 1 MB | 3 MB (per core) |
| L3 cache | 0 KB | 24 MB (shared) |
| Chip lithography | 90 nm | 3 nm |
| Die size | 115 mm2 | 243 mm2 |
| Number of transistors | 114 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Opteron 156 and Core Ultra 5 245KF 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 | 939 | 1851 |
| Power consumption (TDP) | 104 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Opteron 156 and Core Ultra 5 245KF. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
Security technologies
Opteron 156 and Core Ultra 5 245KF technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Opteron 156 and Core Ultra 5 245KF are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Opteron 156 and Core Ultra 5 245KF. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | N/A |
Peripherals
Specifications and connection of peripherals supported by Opteron 156 and Core Ultra 5 245KF.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Recency | 4 May 2005 | 24 October 2024 |
| Physical cores | 1 | 14 |
| Threads | 1 | 14 |
| Chip lithography | 90 nm | 3 nm |
| Power consumption (TDP) | 104 Watt | 125 Watt |
Opteron 156 has 20.2% lower power consumption.
Ultra 5 245KF, on the other hand, has an age advantage of 19 years, 1300% more physical cores and 1300% more threads, and a 2900% more advanced lithography process.
We couldn't decide between Opteron 156 and Core Ultra 5 245KF. We've got no test results to judge.
Be aware that Opteron 156 is a server/workstation processor while Core Ultra 5 245KF is a desktop one.
Should you still have questions on choice between Opteron 156 and Core Ultra 5 245KF, ask them in Comments section, and we shall answer.
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