EPYC 9634 vs Xeon E5-2666 V3
Aggregate performance score
EPYC 9634 outperforms Xeon E5-2666 V3 by a whopping 661% based on our aggregate benchmark results.
Primary details
Comparing Xeon E5-2666 V3 and EPYC 9634 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 864 | 10 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 2.11 |
| Market segment | Server | Server |
| Series | no data | AMD EPYC |
| Power efficiency | 6.23 | 22.06 |
| Architecture codename | Haswell-EP (2014−2015) | Genoa (2022−2023) |
| Release date | 13 November 2014 (10 years ago) | 10 November 2022 (2 years ago) |
| Launch price (MSRP) | no data | $10,304 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5-2666 V3 and EPYC 9634 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 | 10 (Deca-Core) | 84 |
| Threads | 20 | 168 |
| Base clock speed | 2.9 GHz | 2.25 GHz |
| Boost clock speed | 3.5 GHz | 3.7 GHz |
| Multiplier | no data | 22.5 |
| L1 cache | 64K (per core) | 64K (per core) |
| L2 cache | 256K (per core) | 1 MB (per core) |
| L3 cache | 25 MB (shared) | 384 MB (shared) |
| Chip lithography | 22 nm | 5 nm, 6 nm |
| Die size | 356 mm2 | 12x 72 mm2 |
| Number of transistors | 2,600 million | 78,840 million |
| 64 bit support | + | + |
Compatibility
Information on Xeon E5-2666 V3 and EPYC 9634 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 | 2011-3 | SP5 |
| Power consumption (TDP) | 135 Watt | 290 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2666 V3 and EPYC 9634. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| TSX | + | - |
| Precision Boost 2 | no data | + |
Security technologies
Xeon E5-2666 V3 and EPYC 9634 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-2666 V3 and EPYC 9634 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 Xeon E5-2666 V3 and EPYC 9634. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR4 2133 MHz Quad-channel | DDR5-4800 |
| Maximum memory size | no data | 6 TiB |
| Maximum memory bandwidth | no data | 460.8 GB/s |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2666 V3 and EPYC 9634.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 40 | 128 |
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.
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.
Pros & cons summary
| Performance score | 8.93 | 67.96 |
| Recency | 13 November 2014 | 10 November 2022 |
| Physical cores | 10 | 84 |
| Threads | 20 | 168 |
| Chip lithography | 22 nm | 5 nm |
| Power consumption (TDP) | 135 Watt | 290 Watt |
Xeon E5-2666 V3 has 114.8% lower power consumption.
EPYC 9634, on the other hand, has a 661% higher aggregate performance score, an age advantage of 7 years, 740% more physical cores and 740% more threads, and a 340% more advanced lithography process.
The EPYC 9634 is our recommended choice as it beats the Xeon E5-2666 V3 in performance tests.
Should you still have questions on choice between Xeon E5-2666 V3 and EPYC 9634, ask them in Comments section, and we shall answer.
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