Ultra 5 225 vs Xeon D-1521
Primary details
Comparing Xeon D-1521 and Core Ultra 5 225 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1509 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.40 | no data |
| Market segment | Server | Desktop processor |
| Series | Intel Xeon D | no data |
| Power efficiency | 7.53 | no data |
| Architecture codename | Broadwell (2015−2019) | Arrow Lake-S (2024−2025) |
| Release date | 1 November 2015 (9 years ago) | January 2025 |
| Launch price (MSRP) | $199 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon D-1521 and Core Ultra 5 225 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 | 4 (Quad-Core) | 10 (Deca-Core) |
| Threads | 8 | 10 |
| Base clock speed | 2.4 GHz | 3.3 GHz |
| Boost clock speed | 2.7 GHz | 4.9 GHz |
| Bus type | DMI 2.0 | no data |
| Multiplier | 24 | no data |
| L1 cache | 64K (per core) | 112 KB (per core) |
| L2 cache | 256K (per core) | 3 MB (per core) |
| L3 cache | 1.5 MB (per core) | 21 MB (shared) |
| Chip lithography | 14 nm | 3 nm |
| Die size | 246.24 mm2 | 243 mm2 |
| Maximum case temperature (TCase) | 80 °C | no data |
| Number of transistors | 3,200 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Xeon D-1521 and Core Ultra 5 225 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 (Uniprocessor) | 1 |
| Socket | FCBGA1667 | 1851 |
| Power consumption (TDP) | 45 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon D-1521 and Core Ultra 5 225. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | no data |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | + |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| GPIO | + | no data |
Security technologies
Xeon D-1521 and Core Ultra 5 225 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | no data |
| Secure Key | + | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon D-1521 and Core Ultra 5 225 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon D-1521 and Core Ultra 5 225. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4, DDR3 | DDR5 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 34.124 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Arc Xe-LPG Graphics 32EU |
Peripherals
Specifications and connection of peripherals supported by Xeon D-1521 and Core Ultra 5 225.
| PCIe version | 2.0/3.0 | 5.0 |
| PCI Express lanes | 24 | 20 |
| USB revision | 2.0/3.0 | no data |
| Total number of SATA ports | 6 | no data |
| Number of USB ports | 8 | no data |
| Integrated LAN | + | no data |
| UART | + | no data |
Pros & cons summary
| Physical cores | 4 | 10 |
| Threads | 8 | 10 |
| Chip lithography | 14 nm | 3 nm |
| Power consumption (TDP) | 45 Watt | 65 Watt |
Xeon D-1521 has 44.4% lower power consumption.
Ultra 5 225, on the other hand, has 150% more physical cores and 25% more threads, and a 366.7% more advanced lithography process.
We couldn't decide between Xeon D-1521 and Core Ultra 5 225. We've got no test results to judge.
Be aware that Xeon D-1521 is a server/workstation processor while Core Ultra 5 225 is a desktop one.
Should you still have questions on choice between Xeon D-1521 and Core Ultra 5 225, ask them in Comments section, and we shall answer.
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