Athlon 64 TF-20 vs Athlon X4 840
Primary details
Comparing Athlon X4 840 and Athlon 64 TF-20 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1875 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | 4x Athlon | AMD Athlon 64 |
| Power efficiency | 3.04 | no data |
| Architecture codename | Kaveri (2014−2015) | Sherman (2009) |
| Release date | August 2014 (10 years ago) | 1 May 2009 (15 years ago) |
Detailed specifications
Athlon X4 840 and Athlon 64 TF-20 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 | 4 (Quad-Core) | 1 (Single-Core) |
| Threads | 4 | 1 |
| Base clock speed | 3.1 GHz | no data |
| Boost clock speed | 3.8 GHz | 1.6 GHz |
| Bus rate | no data | 667 MHz |
| L1 cache | 256K | 0.1 MB |
| L2 cache | 4 MB | 512 KB |
| Chip lithography | 28 nm | 65 nm |
| Die size | 245 mm2 | no data |
| Maximum core temperature | no data | 95 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | 2,411 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Athlon X4 840 and Athlon 64 TF-20 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 | no data |
| Socket | Socket FM2+ | S1g1 |
| Power consumption (TDP) | 65 watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon X4 840 and Athlon 64 TF-20. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | MMX, 3DNow!, SSE, SSE2, SSE3, AMD64, Enhanced Virus Protection |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
| VirusProtect | - | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon X4 840 and Athlon 64 TF-20 are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon X4 840 and Athlon 64 TF-20. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
Peripherals
Specifications and connection of peripherals supported by Athlon X4 840 and Athlon 64 TF-20.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 16 | no data |
Pros & cons summary
| Recency | on August 2014 | 1 May 2009 |
| Physical cores | 4 | 1 |
| Threads | 4 | 1 |
| Chip lithography | 28 nm | 65 nm |
| Power consumption (TDP) | 65 Watt | 25 Watt |
Athlon X4 840 has an age advantage of 5 years, 300% more physical cores and 300% more threads, and a 132.1% more advanced lithography process.
Athlon 64 TF-20, on the other hand, has 160% lower power consumption.
We couldn't decide between Athlon X4 840 and Athlon 64 TF-20. We've got no test results to judge.
Note that Athlon X4 840 is a desktop processor while Athlon 64 TF-20 is a notebook one.
Should you still have questions on choice between Athlon X4 840 and Athlon 64 TF-20, ask them in Comments section, and we shall answer.
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