Xeon w5-2455X vs E5-2643 v3
Aggregated performance score
w5-2455X outperforms E5-2643 v3 by 262% based on our aggregated benchmark results.
Primary Details
Comparing Xeon E5-2643 v3 and Xeon w5-2455X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 934 | 179 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-Effectiveness Evaluation | 9.56 | 34.13 |
| Market segment | Server | Server |
| Architecture codename | Haswell-EP (2014) | Sapphire Rapids |
| Release date | 8 September 2014 (9 years ago) | 1 January 2023 (1 year ago) |
| Current price | $123 | $1270 |
Cost-Effectiveness Evaluation
Performance per price, higher is better.
Xeon w5-2455X has 257% better value for money than Xeon E5-2643 v3.
Detailed Specifications
Xeon E5-2643 v3 and Xeon w5-2455X 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) | 12 (Dodeca-Core) |
| Threads | 12 | 24 |
| Base clock speed | 3.4 GHz | 3.2 GHz |
| Boost clock speed | 3.7 GHz | 4.6 GHz |
| L1 cache | 64K (per core) | 80K (per core) |
| L2 cache | 256K (per core) | 2 MB (per core) |
| L3 cache | 20 MB (shared) | 30 MB |
| Chip lithography | 22 nm | Intel 7 nm |
| Die size | 356 mm2 | no data |
| Maximum core temperature | 77 °C | 77 °C |
| Maximum case temperature (TCase) | no data | 77 °C |
| Number of transistors | 2,600 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | No | Yes |
Compatibility
Information on Xeon E5-2643 v3 and Xeon w5-2455X 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 | FCLGA2011 | FCLGA4677 |
| Power consumption (TDP) | 135 Watt | 200 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2643 v3 and Xeon w5-2455X. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | Intel® SSE4.1, Intel® AMX, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | - | + |
| Idle States | + | no data |
| Thermal Monitoring | + | no data |
| Flex Memory Access | - | no data |
| Demand Based Switching | + | no data |
| PAE | 46 Bit | no data |
| Turbo Boost Max 3.0 | no data | + |
| Status | Discontinued | Launched |
Security technologies
Xeon E5-2643 v3 and Xeon w5-2455X technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| Secure Key | + | no data |
| Identity Protection | - | no data |
| SGX | no data | - |
| OS Guard | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-2643 v3 and Xeon w5-2455X are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2643 v3 and Xeon w5-2455X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-1600, DDR4-1866, DDR4-2133 | DDR5-4800 |
| Maximum memory size | 768 GB | 2 TB |
| Max memory channels | 4 | 4 |
| Maximum memory bandwidth | 68 GB/s | no data |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2643 v3 and Xeon w5-2455X.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 40 | 64 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
w5-2455X outperforms E5-2643 v3 by 262% based on our aggregated benchmark results.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Benchmark coverage: 68%
w5-2455X outperforms E5-2643 v3 by 262% in Passmark.
Pros & Cons Summary
| Performance score | 6.77 | 24.49 |
| Recency | 8 September 2014 | 1 January 2023 |
| Physical cores | 6 | 12 |
| Threads | 12 | 24 |
| Power consumption (TDP) | 135 Watt | 200 Watt |
The Xeon w5-2455X is our recommended choice as it beats the Xeon E5-2643 v3 in performance tests.
Should you still have questions on choice between Xeon E5-2643 v3 and Xeon w5-2455X, ask them in Comments section, and we shall answer.
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