Pentium D 840 vs EPYC 9754
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 21 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.11 | no data |
| Market segment | Server | Desktop processor |
| Power efficiency | 6.61 | no data |
| Designer | AMD | Intel |
| Manufacturer | TSMC | no data |
| Architecture codename | Bergamo (2023) | Smithfield (2005) |
| Release date | 13 June 2023 (2 years ago) | May 2005 (20 years ago) |
| Launch price (MSRP) | $11,900 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 9754 and Pentium D 840 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 | 128 | 2 (Dual-core) |
| Threads | 256 | 2 |
| Base clock speed | 2.25 GHz | 3.2 GHz |
| Boost clock speed | 3.1 GHz | 3.2 GHz |
| L1 cache | 64 KB (per core) | 28 KB |
| L2 cache | 1 MB (per core) | 2 MB |
| L3 cache | 256 MB (shared) | 0 KB |
| Chip lithography | 5 nm | 90 nm |
| Die size | 8x 73 mm2 | 206 mm2 |
| Maximum core temperature | no data | 70 °C |
| Number of transistors | 71,000 million | 169 million |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
| VID voltage range | no data | 1.2V-1.4V |
Compatibility
Information on EPYC 9754 and Pentium D 840 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 | 2 |
| Socket | SP5 | PLGA775 |
| Power consumption (TDP) | 360 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 9754 and Pentium D 840. You'll probably need this information if you require some particular technology.
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Demand Based Switching | no data | - |
| PAE | no data | 32 Bit |
| FSB parity | no data | - |
| Precision Boost 2 | + | no data |
Security technologies
EPYC 9754 and Pentium D 840 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 9754 and Pentium D 840 are enumerated here.
| AMD-V | + | - |
| VT-d | no data | - |
| VT-x | no data | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 9754 and Pentium D 840. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR1, DDR2, DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | no data |
Peripherals
Specifications and connection of peripherals supported by EPYC 9754 and Pentium D 840.
| PCIe version | 5.0 | no data |
| PCI Express lanes | 128 | no data |
Pros & cons summary
| Physical cores | 128 | 2 |
| Threads | 256 | 2 |
| Chip lithography | 5 nm | 90 nm |
| Power consumption (TDP) | 360 Watt | 130 Watt |
EPYC 9754 has 6300% more physical cores and 12700% more threads, and a 1700% more advanced lithography process.
Pentium D 840, on the other hand, has 176.9% lower power consumption.
We couldn't decide between AMD EPYC 9754 and Intel Pentium D 840. We've got no test results to judge.
Be aware that EPYC 9754 is a server/workstation processor while Pentium D 840 is a desktop one.
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