EPYC 9655P vs Pentium D 840 EE
Primary details
Comparing Pentium D 840 EE 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 | Desktop processor | Server |
| Power efficiency | no data | 23.54 |
| Architecture codename | Smithfield (2005) | Turin (2024) |
| Release date | May 2005 (19 years 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
Pentium D 840 EE 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 | 2 (Dual-core) | 96 |
| Threads | 4 | 192 |
| Base clock speed | no data | 2.6 GHz |
| Boost clock speed | 3.2 GHz | 4.5 GHz |
| L1 cache | 28 KB | 80 KB (per core) |
| L2 cache | 2 MB | 1 MB (per core) |
| L3 cache | 0 KB | 384 MB (shared) |
| Chip lithography | 90 nm | 4 nm |
| Die size | 206 mm2 | 12x 70.6 mm2 |
| Number of transistors | 169 million | 99,780 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Pentium D 840 EE 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 | 2 | 1 |
| Socket | 775 | SP5 |
| Power consumption (TDP) | 130 Watt | 400 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium D 840 EE and EPYC 9655P. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium D 840 EE and EPYC 9655P are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium D 840 EE and EPYC 9655P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Pentium D 840 EE and EPYC 9655P.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Physical cores | 2 | 96 |
| Threads | 4 | 192 |
| Chip lithography | 90 nm | 4 nm |
| Power consumption (TDP) | 130 Watt | 400 Watt |
Pentium D 840 EE has 207.7% lower power consumption.
EPYC 9655P, on the other hand, has 4700% more physical cores and 4700% more threads, and a 2150% more advanced lithography process.
We couldn't decide between Pentium D 840 EE and EPYC 9655P. We've got no test results to judge.
Note that Pentium D 840 EE is a desktop processor while EPYC 9655P is a server/workstation one.
Should you still have questions on choice between Pentium D 840 EE and EPYC 9655P, ask them in Comments section, and we shall answer.
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