EPYC Embedded 3251 vs Xeon 2.66
Primary details
Comparing Xeon 2.66 and EPYC Embedded 3251 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Series | no data | AMD EPYC Embedded |
| Architecture codename | Prestonia (2002) | Zen (2017−2020) |
| Release date | November 2002 (21 year ago) | 21 February 2018 (6 years ago) |
| Launch price (MSRP) | no data | $315 |
Detailed specifications
Xeon 2.66 and EPYC Embedded 3251 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) | 8 (Octa-Core) |
| Threads | 1 | 16 |
| Base clock speed | no data | 2.5 GHz |
| Boost clock speed | 2.66 GHz | 2.5 GHz |
| Multiplier | no data | 25 |
| L1 cache | 16 KB | 768 KB |
| L2 cache | 512 KB | 4 MB |
| L3 cache | 0 KB | 16 MB (shared) |
| Chip lithography | 130 nm | 14 nm |
| Die size | 217 mm2 | 213 mm2 |
| Number of transistors | 55 million | 4800 Million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Xeon 2.66 and EPYC Embedded 3251 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 (Uniprocessor) |
| Socket | 604 | TR4 |
| Power consumption (TDP) | 89 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon 2.66 and EPYC Embedded 3251. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon 2.66 and EPYC Embedded 3251 are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon 2.66 and EPYC Embedded 3251. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4 Eight-channel |
| Maximum memory size | no data | 512 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 42.671 GB/s |
| ECC memory support | - | + |
Pros & cons summary
| Physical cores | 1 | 8 |
| Threads | 1 | 16 |
| Chip lithography | 130 nm | 14 nm |
| Power consumption (TDP) | 89 Watt | 55 Watt |
EPYC Embedded 3251 has 700% more physical cores and 1500% more threads, a 828.6% more advanced lithography process, and 61.8% lower power consumption.
We couldn't decide between Xeon 2.66 and EPYC Embedded 3251. We've got no test results to judge.
Should you still have questions on choice between Xeon 2.66 and EPYC Embedded 3251, ask them in Comments section, and we shall answer.
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