EPYC 7742: specs and benchmarks
Aggregate performance score
EPYC 7742 provides outstanding benchmark performance at 44.07% of a leader's which is a 96-core EPYC 9655P.
Summary
AMD started EPYC 7742 sales 7 August 2019 at a recommended price of $6,950. This is a Zen 2 architecture desktop processor primarily aimed at professional systems. It has 64 cores and 128 threads, and is based on 7 nm, 14 nm manufacturing technology, with a max turbo frequency of 3400 MHz and an unlocked multiplier.
Compatibility-wise, this is AMD Socket TR4 processor with a TDP of 225 Watt. It supports DDR4 Eight-channel memory.
Primary details
EPYC 7742 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 46 | |
| Place by popularity | not in top-100 | |
| Cost-effectiveness evaluation | 3.55 | |
| Market segment | Server | |
| Series | AMD EPYC | |
| Power efficiency | 18.44 | of 100.00 (Core Ultra 7 164U) |
| Architecture codename | Zen 2 (2017−2020) | |
| Release date | 7 August 2019 (5 years ago) | |
| Launch price (MSRP) | $6,950 | of 17,906 (Xeon Platinum 8280L) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 64 (Tetrahexaconta-Core) | |
| Threads | 128 | |
| Base clock speed | 2.25 GHz | of 4.7 GHz (Ryzen 9 7900X) |
| Boost clock speed | 3.4 GHz | of 6.2 GHz (Core i9-14900KS) |
| Multiplier | 22.5 | of 42 (Core i7-7700K) |
| L1 cache | 96K (per core) | of 80 KB (EPYC 9965) |
| L2 cache | 512K (per core) | of 2 MB (Xeon 6980P) |
| L3 cache | 256 MB (shared) | of 1152 MB (EPYC 9684X) |
| Chip lithography | 7 nm, 14 nm | of 3 nm (Core Ultra 9 285K) |
| Die size | 192 mm2 | |
| Number of transistors | 4,800 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | + | |
| Unlocked multiplier | + |
Compatibility
Information on EPYC 7742 compatibility with other computer components and devices: 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) | of 8 (Xeon Platinum 8454H) |
| Socket | TR4 | |
| Power consumption (TDP) | 225 Watt | of 500 Watt (Xeon 6960P) |
Technologies and extensions
Technological capabilities and additional instructions supported by EPYC 7742. You'll probably need this information if you require some particular technology.
| AES-NI | + | |
| AVX | + | |
| Precision Boost 2 | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| AMD-V | + |
Memory specs
Types, maximum amount and channel number of RAM supported by EPYC 7742's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR4 Eight-channel | |
| Maximum memory size | 4 TiB | of 6 TiB (EPYC 9654) |
| Max memory channels | 8 | of 12 (Xeon Platinum 9221) |
| Maximum memory bandwidth | 204.763 GB/s | of 460.8 GB/s (EPYC 9654) |
| ECC memory support | + |
Benchmark performance
Single-core and multi-core benchmark results of EPYC 7742. Overall benchmark performance 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.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Send your test results of EPYC 7742.
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Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for EPYC 7742, according to our PC configuration statistics.
These are the fastest graphics cards for EPYC 7742 in our user configuration statistics. There is a total of 26 configurations using EPYC 7742 in our database.
