Xeon 6740E vs EPYC 7742
Aggregate performance score
Xeon 6740E outperforms EPYC 7742 by a small 9% based on our aggregate benchmark results.
Primary details
Comparing EPYC 7742 and Xeon 6740E processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 45 | 37 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.55 | 18.92 |
| Market segment | Server | Server |
| Series | AMD EPYC | no data |
| Power efficiency | 18.54 | 18.15 |
| Architecture codename | Zen 2 (2017−2020) | Sierra Forest (2024) |
| Release date | 7 August 2019 (5 years ago) | 3 June 2024 (less than a year ago) |
| Launch price (MSRP) | $6,950 | $5,265 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon 6740E has 433% better value for money than EPYC 7742.
Detailed specifications
EPYC 7742 and Xeon 6740E 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 | 64 (Tetrahexaconta-Core) | 96 |
| Threads | 128 | 96 |
| Base clock speed | 2.25 GHz | 2.4 GHz |
| Boost clock speed | 3.4 GHz | 3.2 GHz |
| Multiplier | 22.5 | no data |
| L1 cache | 4 MB | 96 KB (per core) |
| L2 cache | 32 MB | 4 MB (per module) |
| L3 cache | 256 MB (shared) | 96 MB (shared) |
| Chip lithography | 7 nm, 14 nm | 5 nm |
| Die size | 192 mm2 | no data |
| Maximum case temperature (TCase) | no data | 84 °C |
| Number of transistors | 4,800 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on EPYC 7742 and Xeon 6740E 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 (Multiprocessor) | 2 |
| Socket | TR4 | 4710 |
| Power consumption (TDP) | 225 Watt | 250 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7742 and Xeon 6740E. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
| Precision Boost 2 | + | no data |
Security technologies
EPYC 7742 and Xeon 6740E technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7742 and Xeon 6740E 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 7742 and Xeon 6740E. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR5 |
| Maximum memory size | 4 TiB | no data |
| Max memory channels | 8 | no data |
| Maximum memory bandwidth | 204.763 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by EPYC 7742 and Xeon 6740E.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 88 |
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 | 44.07 | 47.95 |
| Recency | 7 August 2019 | 3 June 2024 |
| Physical cores | 64 | 96 |
| Threads | 128 | 96 |
| Chip lithography | 7 nm | 5 nm |
| Power consumption (TDP) | 225 Watt | 250 Watt |
EPYC 7742 has 33.3% more threads, and 11.1% lower power consumption.
Xeon 6740E, on the other hand, has a 8.8% higher aggregate performance score, an age advantage of 4 years, 50% more physical cores, and a 40% more advanced lithography process.
Given the minimal performance differences, no clear winner can be declared between EPYC 7742 and Xeon 6740E.
Should you still have questions on choice between EPYC 7742 and Xeon 6740E, ask them in Comments section, and we shall answer.
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