Processor N100 vs Xeon E5645
Aggregate performance score
Processor N100 outperforms Xeon E5645 by a minimal 1% based on our aggregate benchmark results.
Primary details
Comparing Xeon E5645 and Processor N100 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1578 | 1574 |
| Place by popularity | not in top-100 | 88 |
| Cost-effectiveness evaluation | 1.52 | no data |
| Market segment | Server | Laptop |
| Series | no data | Intel Alder Lake-N |
| Architecture codename | Westmere-EP (2010−2011) | Alder Lake-N (2023) |
| Release date | 16 March 2010 (14 years ago) | 3 January 2023 (1 year ago) |
| Launch price (MSRP) | $294 | $128 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5645 and Processor N100 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 | 6 (Hexa-Core) | 4 (Quad-Core) |
| Threads | 12 | 4 |
| Base clock speed | 2.4 GHz | 0.1 GHz |
| Boost clock speed | 2.67 GHz | 3.4 GHz |
| L1 cache | 64 KB (per core) | 96 KB (per core) |
| L2 cache | 256 KB (per core) | 2 MB (shared) |
| L3 cache | 12 MB (shared) | 6 MB |
| Chip lithography | 32 nm | 10 nm |
| Die size | 239 mm2 | no data |
| Maximum core temperature | 76 °C | 105 °C |
| Number of transistors | 1,170 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Xeon E5645 and Processor N100 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 | FCLGA1366,LGA1366 | BGA1264 |
| Power consumption (TDP) | 80 Watt | 6 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5645 and Processor N100. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | no data |
| AES-NI | + | + |
| FMA | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Demand Based Switching | + | no data |
| PAE | 40 Bit | no data |
| Status | Discontinued | no data |
Security technologies
Xeon E5645 and Processor N100 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5645 and Processor N100 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5645 and Processor N100. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4, DDR5 |
| Maximum memory size | 288 GB | no data |
| Max memory channels | 3 | no data |
| Maximum memory bandwidth | 32 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel UHD Graphics 24EUs (Alder Lake-N) |
Peripherals
Specifications and connection of peripherals supported by Xeon E5645 and Processor N100.
| PCIe version | 2.0 | 3.0 |
| PCI Express lanes | no data | 9 |
Pros & cons summary
| Performance score | 3.27 | 3.29 |
| Recency | 16 March 2010 | 3 January 2023 |
| Physical cores | 6 | 4 |
| Threads | 12 | 4 |
| Chip lithography | 32 nm | 10 nm |
| Power consumption (TDP) | 80 Watt | 6 Watt |
Xeon E5645 has 50% more physical cores and 200% more threads.
Processor N100, on the other hand, has a 0.6% higher aggregate performance score, an age advantage of 12 years, a 220% more advanced lithography process, and 1233.3% lower power consumption.
Given the minimal performance differences, no clear winner can be declared between Xeon E5645 and Processor N100.
Be aware that Xeon E5645 is a server/workstation processor while Processor N100 is a notebook one.
Should you still have questions on choice between Xeon E5645 and Processor N100, ask them in Comments section, and we shall answer.
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