Celeron 857 vs Xeon E5640
Primary details
Comparing Xeon E5640 and Celeron 857 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1776 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.85 | no data |
| Market segment | Server | Laptop |
| Series | no data | Intel Celeron |
| Power efficiency | 2.82 | no data |
| Architecture codename | Westmere-EP (2010−2011) | Sandy Bridge (2011−2013) |
| Release date | 16 March 2010 (14 years ago) | 1 July 2011 (13 years ago) |
| Launch price (MSRP) | $49 | $134 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5640 and Celeron 857 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) | 2 (Dual-core) |
| Threads | 8 | 2 |
| Base clock speed | 2.66 GHz | 1.2 GHz |
| Boost clock speed | 2.93 GHz | 1.2 GHz |
| Bus type | no data | DMI 2.0 |
| Bus rate | no data | 4 × 5 GT/s |
| Multiplier | no data | 12 |
| L1 cache | 64 KB (per core) | 64K (per core) |
| L2 cache | 256 KB (per core) | 256K (per core) |
| L3 cache | 12 MB (shared) | 2 MB (shared) |
| Chip lithography | 32 nm | 32 nm |
| Die size | 239 mm2 | 131 mm2 |
| Maximum core temperature | 78 °C | 100 °C |
| Number of transistors | 1,170 million | 504 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon E5640 and Celeron 857 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 (Uniprocessor) |
| Socket | FCLGA1366,LGA1366 | FCBGA1023 |
| Power consumption (TDP) | 80 Watt | 17 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5640 and Celeron 857. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | - |
| FMA | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | no data | - |
| Turbo Boost Technology | 1.0 | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Demand Based Switching | + | - |
| PAE | 40 Bit | no data |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
Xeon E5640 and Celeron 857 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5640 and Celeron 857 are enumerated here.
| VT-d | + | - |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5640 and Celeron 857. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 288 GB | 16 GB |
| Max memory channels | 3 | 2 |
| Maximum memory bandwidth | 25.6 GB/s | 21.335 GB/s |
| ECC memory support | + | - |
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 GHz |
Graphics interfaces
Available interfaces and connections of Xeon E5640 and Celeron 857 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 Xeon E5640 and Celeron 857.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | no data | 16 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Recency | 16 March 2010 | 1 July 2011 |
| Physical cores | 4 | 2 |
| Threads | 8 | 2 |
| Power consumption (TDP) | 80 Watt | 17 Watt |
Xeon E5640 has 100% more physical cores and 300% more threads.
Celeron 857, on the other hand, has an age advantage of 1 year, and 370.6% lower power consumption.
We couldn't decide between Xeon E5640 and Celeron 857. We've got no test results to judge.
Be aware that Xeon E5640 is a server/workstation processor while Celeron 857 is a notebook one.
Should you still have questions on choice between Xeon E5640 and Celeron 857, ask them in Comments section, and we shall answer.
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