EPYC 9745 vs Xeon L5638
Primary details
Comparing Xeon L5638 and EPYC 9745 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1804 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.73 | no data |
| Market segment | Server | Server |
| Power efficiency | 3.68 | no data |
| Architecture codename | Westmere-EP (2010−2011) | Turin (2024) |
| Release date | 16 March 2010 (14 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | $90 | $12,141 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon L5638 and EPYC 9745 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 | 6 (Hexa-Core) | 128 |
| Threads | 12 | 256 |
| Base clock speed | 2 GHz | 2.4 GHz |
| Boost clock speed | 2.4 GHz | 3.7 GHz |
| L1 cache | 64 KB (per core) | 80 KB (per core) |
| L2 cache | 256 KB (per core) | 1 MB (per core) |
| L3 cache | 12 MB (shared) | 256 MB (shared) |
| Chip lithography | 32 nm | 3 nm |
| Die size | 239 mm2 | no data |
| Maximum core temperature | 85 °C | no data |
| Number of transistors | 1,170 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Xeon L5638 and EPYC 9745 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 | 2 |
| Socket | FCLGA1366,LGA1366 | SP5 |
| Power consumption (TDP) | 60 Watt | 400 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon L5638 and EPYC 9745. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 1.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Precision Boost 2 | no data | + |
Security technologies
Xeon L5638 and EPYC 9745 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon L5638 and EPYC 9745 are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon L5638 and EPYC 9745. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Xeon L5638 and EPYC 9745.
| PCIe version | 2.0 | 5.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Recency | 16 March 2010 | 10 October 2024 |
| Physical cores | 6 | 128 |
| Threads | 12 | 256 |
| Chip lithography | 32 nm | 3 nm |
| Power consumption (TDP) | 60 Watt | 400 Watt |
Xeon L5638 has 566.7% lower power consumption.
EPYC 9745, on the other hand, has an age advantage of 14 years, 2033.3% more physical cores and 2033.3% more threads, and a 966.7% more advanced lithography process.
We couldn't decide between Xeon L5638 and EPYC 9745. We've got no test results to judge.
Should you still have questions on choice between Xeon L5638 and EPYC 9745, ask them in Comments section, and we shall answer.
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