EPYC 7742 vs FX-8170
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 88 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 3.79 |
| Market segment | Desktop processor | Server |
| Series | no data | AMD EPYC |
| Power efficiency | no data | 7.42 |
| Designer | AMD | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | Zambezi (2011−2012) | Zen 2 (2017−2020) |
| Release date | 23 October 2012 (13 years ago) | 7 August 2019 (6 years ago) |
| Launch price (MSRP) | no data | $6,950 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
FX-8170 and EPYC 7742 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 | 8 (Octa-Core) | 64 (Tetrahexaconta-Core) |
| Threads | 8 | 128 |
| Base clock speed | 3.9 GHz | 2.25 GHz |
| Boost clock speed | 4.5 GHz | 3.4 GHz |
| Multiplier | no data | 22.5 |
| L1 cache | 384 KB | 96K (per core) |
| L2 cache | 8 MB | 512K (per core) |
| L3 cache | 8 MB (shared) | 256 MB (shared) |
| Chip lithography | 32 nm | 7 nm, 14 nm |
| Die size | 315 mm2 | 192 mm2 |
| Number of transistors | 1,200 million | 4,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | + | + |
Compatibility
Information on FX-8170 and EPYC 7742 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 | 1 | 2 (Multiprocessor) |
| Socket | AM3+ | TR4 |
| Power consumption (TDP) | 125 Watt | 225 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by FX-8170 and EPYC 7742. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by FX-8170 and EPYC 7742 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by FX-8170 and EPYC 7742. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 Eight-channel |
| Maximum memory size | no data | 4 TiB |
| Max memory channels | no data | 8 |
| Maximum memory bandwidth | no data | 204.763 GB/s |
| ECC memory support | - | + |
Peripherals
Specifications and connection of peripherals supported by FX-8170 and EPYC 7742.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Recency | 23 October 2012 | 7 August 2019 |
| Physical cores | 8 | 64 |
| Threads | 8 | 128 |
| Chip lithography | 32 nm | 7 nm |
| Power consumption (TDP) | 125 Watt | 225 Watt |
FX-8170 has 80% lower power consumption.
EPYC 7742, on the other hand, has an age advantage of 6 years, 700% more physical cores and 1500% more threads, and a 357.1% more advanced lithography process.
We couldn't decide between AMD FX-8170 and AMD EPYC 7742. We've got no test results to judge.
Note that FX-8170 is a desktop processor while EPYC 7742 is a server/workstation one.
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