Athlon 800 vs Xeon E5-2643
Primary details
Comparing Xeon E5-2643 and Athlon 800 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1563 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.91 | no data |
| Market segment | Server | Desktop processor |
| Power efficiency | 2.45 | no data |
| Architecture codename | Sandy Bridge-EP (2012) | Thunderbird (1999−2000) |
| Release date | 6 March 2012 (12 years ago) | 20 December 1999 (24 years ago) |
| Launch price (MSRP) | $218 | $799 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5-2643 and Athlon 800 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 | 8 | 1 |
| Base clock speed | 3.3 GHz | no data |
| Boost clock speed | 3.5 GHz | 0.8 GHz |
| Bus rate | 8 GT/s | no data |
| L1 cache | 64 KB (per core) | 128 KB |
| L2 cache | 256 KB (per core) | 512 KB |
| L3 cache | 10240 KB (shared) | 0 KB |
| Chip lithography | 32 nm | 180 nm |
| Die size | 294 mm2 | 102 mm2 |
| Maximum core temperature | 73 °C | no data |
| Maximum case temperature (TCase) | no data | 70 °C |
| Number of transistors | 1,270 million | 22 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon E5-2643 and Athlon 800 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 | 1 |
| Socket | FCLGA2011 | A |
| Power consumption (TDP) | 130 Watt | 43 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2643 and Athlon 800. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | no data |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | - | no data |
| Demand Based Switching | + | no data |
Security technologies
Xeon E5-2643 and Athlon 800 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 Xeon E5-2643 and Athlon 800 are enumerated here.
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2643 and Athlon 800. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1 |
| Maximum memory size | 384 GB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 51.2 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2643 and Athlon 800.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 40 | no data |
Pros & cons summary
| Recency | 6 March 2012 | 20 December 1999 |
| Physical cores | 4 | 1 |
| Threads | 8 | 1 |
| Chip lithography | 32 nm | 180 nm |
| Power consumption (TDP) | 130 Watt | 43 Watt |
Xeon E5-2643 has an age advantage of 12 years, 300% more physical cores and 700% more threads, and a 462.5% more advanced lithography process.
Athlon 800, on the other hand, has 202.3% lower power consumption.
We couldn't decide between Xeon E5-2643 and Athlon 800. We've got no test results to judge.
Be aware that Xeon E5-2643 is a server/workstation processor while Athlon 800 is a desktop one.
Should you still have questions on choice between Xeon E5-2643 and Athlon 800, ask them in Comments section, and we shall answer.
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