Pentium D 840 EE vs Turion II Ultra M640
Primary details
Comparing Turion II Ultra M640 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 | Laptop | Desktop processor |
| Series | AMD Turion II Ultra | no data |
| Architecture codename | Caspian (2009) | Smithfield (2005) |
| Release date | 10 September 2009 (15 years ago) | May 2005 (19 years ago) |
Detailed specifications
Turion II Ultra M640 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 | 2 (Dual-core) | 2 (Dual-core) |
| Threads | 2 | 4 |
| Boost clock speed | 2.6 GHz | 3.2 GHz |
| Bus rate | 3600 MHz | no data |
| L1 cache | no data | 28 KB |
| L2 cache | 2 MB | 2 MB |
| L3 cache | no data | 0 KB |
| Chip lithography | 45 nm | 90 nm |
| Die size | no data | 206 mm2 |
| Number of transistors | no data | 169 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Turion II Ultra M640 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 | no data | 2 |
| Socket | Socket S1 (s1g3) 638-pin | 775 |
| Power consumption (TDP) | 35 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Turion II Ultra M640 and Pentium D 840 EE. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, SSE, SSE2, SSE3, Enhanced 3DNow!, NX bit, AMD64, PowerNow!, AMD Virtualization | no data |
| PowerNow | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Turion II Ultra M640 and Pentium D 840 EE. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR2 | DDR1, DDR2, DDR3 |
Pros & cons summary
| Threads | 2 | 4 |
| Chip lithography | 45 nm | 90 nm |
| Power consumption (TDP) | 35 Watt | 130 Watt |
Turion II Ultra M640 has a 100% more advanced lithography process, and 271.4% lower power consumption.
Pentium D 840 EE, on the other hand, has 100% more threads.
We couldn't decide between Turion II Ultra M640 and Pentium D 840 EE. We've got no test results to judge.
Be aware that Turion II Ultra M640 is a notebook processor while Pentium D 840 EE is a desktop one.
Should you still have questions on choice between Turion II Ultra M640 and Pentium D 840 EE, 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.
