Celeron B820 vs Athlon 64 TF-20
Aggregate performance score
Celeron B820 outperforms Athlon 64 TF-20 by a whopping 213% based on our aggregate benchmark results.
Primary details
Comparing Athlon 64 TF-20 and Celeron B820 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3300 | 2889 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD Athlon 64 | Intel Celeron |
| Power efficiency | 0.61 | 1.35 |
| Architecture codename | Sherman (2009) | Sandy Bridge (2011−2013) |
| Release date | 1 May 2009 (15 years ago) | 1 July 2012 (12 years ago) |
| Launch price (MSRP) | no data | $86 |
Detailed specifications
Athlon 64 TF-20 and Celeron B820 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 | 2 |
| Base clock speed | no data | 1.7 GHz |
| Boost clock speed | 1.6 GHz | 1.7 GHz |
| Bus type | no data | DMI 2.0 |
| Bus rate | 667 MHz | 4 × 5 GT/s |
| Multiplier | no data | 17 |
| L1 cache | 0.1 MB | 64K (per core) |
| L2 cache | 512 KB | 256K (per core) |
| L3 cache | no data | 2 MB (shared) |
| Chip lithography | 65 nm | 32 nm |
| Die size | no data | 131 mm2 |
| Maximum core temperature | 95 °C | 100 °C |
| Number of transistors | no data | 504 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon 64 TF-20 and Celeron B820 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 | 1 (Uniprocessor) |
| Socket | S1g1 | FCPGA988,PGA988 |
| Power consumption (TDP) | 25 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon 64 TF-20 and Celeron B820. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, 3DNow!, SSE, SSE2, SSE3, AMD64, Enhanced Virus Protection | Intel® SSE4.1, Intel® SSE4.2 |
| FMA | - | + |
| VirusProtect | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| My WiFi | no data | - |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Demand Based Switching | no data | - |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
Athlon 64 TF-20 and Celeron B820 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon 64 TF-20 and Celeron B820 are enumerated here.
| VT-d | no data | - |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon 64 TF-20 and Celeron B820. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3 |
| Maximum memory size | no data | 16 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 21.335 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel HD Graphics for 2nd Generation Intel Processors |
| Graphics max frequency | no data | 1.05 GHz |
Graphics interfaces
Available interfaces and connections of Athlon 64 TF-20 and Celeron B820 integrated GPUs.
| Number of displays supported | no data | 2 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| SDVO | no data | + |
| CRT | no data | + |
Peripherals
Specifications and connection of peripherals supported by Athlon 64 TF-20 and Celeron B820.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 16 |
Pros & cons summary
| Performance score | 0.16 | 0.50 |
| Recency | 1 May 2009 | 1 July 2012 |
| Physical cores | 1 | 2 |
| Threads | 1 | 2 |
| Chip lithography | 65 nm | 32 nm |
| Power consumption (TDP) | 25 Watt | 35 Watt |
Athlon 64 TF-20 has 40% lower power consumption.
Celeron B820, on the other hand, has a 212.5% higher aggregate performance score, an age advantage of 3 years, 100% more physical cores and 100% more threads, and a 103.1% more advanced lithography process.
The Celeron B820 is our recommended choice as it beats the Athlon 64 TF-20 in performance tests.
Should you still have questions on choice between Athlon 64 TF-20 and Celeron B820, ask them in Comments section, and we shall answer.
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