Ultra 9 285K vs Xeon Platinum 8321HC
Primary details
Comparing Xeon Platinum 8321HC 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 | 70.31 |
| Market segment | Server | Desktop processor |
| Power efficiency | no data | 32.55 |
| Architecture codename | no data | Arrow Lake-S (2024−2025) |
| Release date | 1 October 2020 (4 years ago) | 24 October 2024 (recently) |
| Launch price (MSRP) | no data | $589 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon Platinum 8321HC 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 | 26 (Hexacosa-Core) | 24 (Tetracosa-Core) |
| Threads | 52 | 24 |
| Base clock speed | 1.4 GHz | 3.7 GHz |
| Boost clock speed | 3 GHz | 5.7 GHz |
| Bus rate | no data | 250 MHz |
| L1 cache | no data | 112 KB (per core) |
| L2 cache | no data | 3 MB (per core) |
| L3 cache | 35.75 MB | 36 MB (shared) |
| Chip lithography | no data | 3 nm |
| Die size | no data | 243 mm2 |
| Number of transistors | no data | 17,800 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Xeon Platinum 8321HC 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 | no data | 1851 |
| Power consumption (TDP) | 88 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Platinum 8321HC and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 | no data |
| AES-NI | + | + |
| AVX | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | + | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | + |
| Deep Learning Boost | + | - |
Security technologies
Xeon Platinum 8321HC and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Platinum 8321HC and Core Ultra 9 285K are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 8321HC and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | RDIMM | DDR5 Depends on motherboard |
| Maximum memory size | 1.12 TB | no data |
| Max memory channels | 6 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Arc Xe-LPG Graphics 64EU |
Peripherals
Specifications and connection of peripherals supported by Xeon Platinum 8321HC and Core Ultra 9 285K.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 48 | 20 |
Pros & cons summary
| Recency | 1 October 2020 | 24 October 2024 |
| Physical cores | 26 | 24 |
| Threads | 52 | 24 |
| Power consumption (TDP) | 88 Watt | 125 Watt |
Xeon Platinum 8321HC has 8.3% more physical cores and 116.7% more threads, and 42% lower power consumption.
Ultra 9 285K, on the other hand, has an age advantage of 4 years.
We couldn't decide between Xeon Platinum 8321HC and Core Ultra 9 285K. We've got no test results to judge.
Be aware that Xeon Platinum 8321HC is a server/workstation processor while Core Ultra 9 285K is a desktop one.
Should you still have questions on choice between Xeon Platinum 8321HC and Core Ultra 9 285K, ask them in Comments section, and we shall answer.
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