Pentium D 840 EE vs Athlon 650
Primary details
Comparing Athlon 650 and Pentium D 840 EE processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Thunderbird (1999−2000) | Smithfield (2005) |
| Release date | 9 August 1999 (25 years ago) | May 2005 (19 years ago) |
| Launch price (MSRP) | $849 | no data |
Detailed specifications
Athlon 650 and Pentium D 840 EE 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 | 1 (Single-Core) | 2 (Dual-core) |
| Threads | 1 | 4 |
| Boost clock speed | 0.65 GHz | 3.2 GHz |
| L1 cache | 128 KB | 28 KB |
| L2 cache | 512 KB | 2 MB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 180 nm | 90 nm |
| Die size | 184 mm2 | 206 mm2 |
| Maximum case temperature (TCase) | 70 °C | no data |
| Number of transistors | 22 million | 169 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon 650 and Pentium D 840 EE 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 | A | 775 |
| Power consumption (TDP) | 48 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon 650 and Pentium D 840 EE. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon 650 and Pentium D 840 EE. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1 | DDR1, DDR2, DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | no data |
Pros & cons summary
| Physical cores | 1 | 2 |
| Threads | 1 | 4 |
| Chip lithography | 180 nm | 90 nm |
| Power consumption (TDP) | 48 Watt | 130 Watt |
Athlon 650 has 170.8% lower power consumption.
Pentium D 840 EE, on the other hand, has 100% more physical cores and 300% more threads, and a 100% more advanced lithography process.
We couldn't decide between Athlon 650 and Pentium D 840 EE. We've got no test results to judge.
Should you still have questions on choice between Athlon 650 and Pentium D 840 EE, ask them in Comments section, and we shall answer.
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