EPYC 7401 vs Phenom II X2 N660
Primary details
Comparing Phenom II X2 N660 and EPYC 7401 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | not rated | 97 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 10.06 |
| Market segment | Laptop | Server |
| Series | 2x AMD Phenom II | AMD EPYC |
| Architecture codename | Champlain (2010−2011) | Naples (2017−2018) |
| Release date | 1 January 2011 (13 years ago) | 20 June 2017 (7 years ago) |
| Launch price (MSRP) | no data | $1,850 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Phenom II X2 N660 and EPYC 7401 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 | 2 (Dual-core) | 24 (Tetracosa-Core) |
| Threads | 2 | 48 |
| Base clock speed | no data | 2 GHz |
| Boost clock speed | 3 GHz | 2 GHz |
| Bus rate | 3600 MHz | no data |
| Multiplier | no data | 20 |
| L1 cache | 256 KB | 2.25 MB |
| L2 cache | 2 MB | 12 MB |
| L3 cache | no data | 64 MB (shared) |
| Chip lithography | 45 nm | 14 nm |
| Die size | no data | 213 mm2 |
| Number of transistors | no data | 19200 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Phenom II X2 N660 and EPYC 7401 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 | no data | 2 (Multiprocessor) |
| Socket | S1 | TR4 |
| Power consumption (TDP) | 35 Watt | 155 W, 170 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X2 N660 and EPYC 7401. You'll probably need this information if you require some particular technology.
| Instruction set extensions | HyperTransport 3.0, SSE4A, AMD64, Enhanced Virus Protection, Vurtualization | no data |
| AES-NI | - | + |
| AVX | - | + |
| VirusProtect | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X2 N660 and EPYC 7401 are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X2 N660 and EPYC 7401. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 Eight-channel |
| Maximum memory size | no data | 2 TiB |
| Max memory channels | no data | 8 |
| Maximum memory bandwidth | no data | 170.671 GB/s |
| ECC memory support | - | + |
Peripherals
Specifications and connection of peripherals supported by Phenom II X2 N660 and EPYC 7401.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Recency | 1 January 2011 | 20 June 2017 |
| Physical cores | 2 | 24 |
| Threads | 2 | 48 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 35 Watt | 155 Watt |
Phenom II X2 N660 has 342.9% lower power consumption.
EPYC 7401, on the other hand, has an age advantage of 6 years, 1100% more physical cores and 2300% more threads, and a 221.4% more advanced lithography process.
We couldn't decide between Phenom II X2 N660 and EPYC 7401. We've got no test results to judge.
Be aware that Phenom II X2 N660 is a notebook processor while EPYC 7401 is a server/workstation one.
Should you still have questions on choice between Phenom II X2 N660 and EPYC 7401, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
