EPYC 9755 vs Ryzen 9 7945HX
Primary details
Comparing Ryzen 9 7945HX and EPYC 9755 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 110 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Power efficiency | 59.22 | no data |
| Architecture codename | Dragon Range-HX (Zen 4) (2023−2024) | Turin (2024) |
| Release date | 4 January 2023 (1 year ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $12,984 |
Detailed specifications
Ryzen 9 7945HX and EPYC 9755 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 | 16 (Hexadeca-Core) | 128 |
| Threads | 32 | 256 |
| Base clock speed | 2.5 GHz | 2.7 GHz |
| Boost clock speed | 5.4 GHz | 4.1 GHz |
| L1 cache | 64K (per core) | 80 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 64 MB (shared) | 512 MB (shared) |
| Chip lithography | CCD = 5 nm, I/O = 6 nm | 4 nm |
| Die size | 2x 71 mm2 | 16x 70.6 mm2 |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | 13,140 million | 133,040 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 9 7945HX and EPYC 9755 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 |
| Socket | FL1 | SP5 |
| Power consumption (TDP) | 55 Watt | 500 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 7945HX and EPYC 9755. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME | no data |
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 7945HX and EPYC 9755 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7945HX and EPYC 9755. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 610M | N/A |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 7945HX and EPYC 9755.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 28 | 128 |
Pros & cons summary
| Recency | 4 January 2023 | 10 October 2024 |
| Physical cores | 16 | 128 |
| Threads | 32 | 256 |
| Power consumption (TDP) | 55 Watt | 500 Watt |
Ryzen 9 7945HX has 809.1% lower power consumption.
EPYC 9755, on the other hand, has an age advantage of 1 year, and 700% more physical cores and 700% more threads.
We couldn't decide between Ryzen 9 7945HX and EPYC 9755. We've got no test results to judge.
Be aware that Ryzen 9 7945HX is a notebook processor while EPYC 9755 is a server/workstation one.
Should you still have questions on choice between Ryzen 9 7945HX and EPYC 9755, 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.
