EPYC 9655P vs Ryzen 9 7840HX
Primary details
Comparing Ryzen 9 7840HX and EPYC 9655P processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 1 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 2.62 |
| Market segment | Laptop | Server |
| Series | AMD Dragon Range (Zen 4, Ryzen 7045) | no data |
| Power efficiency | no data | 23.66 |
| Architecture codename | Dragon Range-HX (Zen 4) (2023−2024) | Turin (2024) |
| Release date | 17 January 2024 (less than a year ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $10,811 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 9 7840HX and EPYC 9655P 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 | 12 (Dodeca-Core) | 96 |
| Threads | 24 | 192 |
| Base clock speed | 2.9 GHz | 2.6 GHz |
| Boost clock speed | 5.1 GHz | 4.5 GHz |
| L1 cache | 768 KB | 80 KB (per core) |
| L2 cache | 12 MB | 1 MB (per core) |
| L3 cache | 64 MB | 384 MB (shared) |
| Chip lithography | 5 nm | 4 nm |
| Die size | no data | 12x 70.6 mm2 |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | 9900 Million | 99,780 million |
| 64 bit support | + | + |
Compatibility
Information on Ryzen 9 7840HX and EPYC 9655P 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 | 1 |
| Socket | FL1 | SP5 |
| Power consumption (TDP) | 55 Watt | 400 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 7840HX and EPYC 9655P. 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 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 7840HX and EPYC 9655P are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7840HX and EPYC 9655P. 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 (400 - 2200 MHz) | N/A |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 7840HX and EPYC 9655P.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Recency | 17 January 2024 | 10 October 2024 |
| Physical cores | 12 | 96 |
| Threads | 24 | 192 |
| Chip lithography | 5 nm | 4 nm |
| Power consumption (TDP) | 55 Watt | 400 Watt |
Ryzen 9 7840HX has 627.3% lower power consumption.
EPYC 9655P, on the other hand, has an age advantage of 8 months, 700% more physical cores and 700% more threads, and a 25% more advanced lithography process.
We couldn't decide between Ryzen 9 7840HX and EPYC 9655P. We've got no test results to judge.
Be aware that Ryzen 9 7840HX is a notebook processor while EPYC 9655P is a server/workstation one.
Should you still have questions on choice between Ryzen 9 7840HX and EPYC 9655P, ask them in Comments section, and we shall answer.
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