Ultra 9 285T vs EPYC 7643
Primary details
Comparing EPYC 7643 and Core Ultra 9 285T processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 38 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 6.71 | no data |
| Market segment | Server | Desktop processor |
| Series | AMD EPYC | no data |
| Power efficiency | 20.03 | no data |
| Architecture codename | Milan (2021−2023) | Arrow Lake-S (2024−2025) |
| Release date | 15 March 2021 (3 years ago) | January 2025 |
| Launch price (MSRP) | $4,995 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
EPYC 7643 and Core Ultra 9 285T 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 | 48 (Octatetraconta-Core) | 24 (Tetracosa-Core) |
| Threads | 96 | 24 |
| Base clock speed | 2.3 GHz | 1.4 GHz |
| Boost clock speed | 3.6 GHz | 5.4 GHz |
| Multiplier | 23 | no data |
| L1 cache | 64 KB (per core) | 112 KB (per core) |
| L2 cache | 512 KB (per core) | 3 MB (per core) |
| L3 cache | 256 MB (shared) | 36 MB (shared) |
| Chip lithography | 7 nm+ | 3 nm |
| Die size | 8x 81 mm2 | 243 mm2 |
| Number of transistors | 33,200 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
Compatibility
Information on EPYC 7643 and Core Ultra 9 285T 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 | 2 | 1 |
| Socket | SP3 | 1851 |
| Power consumption (TDP) | 225 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7643 and Core Ultra 9 285T. 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
EPYC 7643 and Core Ultra 9 285T technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7643 and Core Ultra 9 285T are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7643 and Core Ultra 9 285T. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR5 Depends on motherboard |
| Maximum memory size | 4 TiB | no data |
| Maximum memory bandwidth | 204.795 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Arc Xe2 Graphics 64EU |
Peripherals
Specifications and connection of peripherals supported by EPYC 7643 and Core Ultra 9 285T.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 128 | 20 |
Pros & cons summary
| Physical cores | 48 | 24 |
| Threads | 96 | 24 |
| Chip lithography | 7 nm | 3 nm |
| Power consumption (TDP) | 225 Watt | 35 Watt |
EPYC 7643 has 100% more physical cores and 300% more threads.
Ultra 9 285T, on the other hand, has a 133.3% more advanced lithography process, and 542.9% lower power consumption.
We couldn't decide between EPYC 7643 and Core Ultra 9 285T. We've got no test results to judge.
Be aware that EPYC 7643 is a server/workstation processor while Core Ultra 9 285T is a desktop one.
Should you still have questions on choice between EPYC 7643 and Core Ultra 9 285T, ask them in Comments section, and we shall answer.
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