Xeon D-1627 vs E5645
Primary details
Comparing Xeon E5645 and Xeon D-1627 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1605 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.38 | no data |
| Market segment | Server | Server |
| Series | no data | Intel Xeon D |
| Power efficiency | 3.76 | no data |
| Architecture codename | Westmere-EP (2010−2011) | Broadwell (2015−2019) |
| Release date | 16 March 2010 (14 years ago) | 2 April 2019 (5 years ago) |
| Launch price (MSRP) | $294 | $202 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5645 and Xeon D-1627 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 | 8 |
| Base clock speed | 2.4 GHz | 2.9 GHz |
| Boost clock speed | 2.67 GHz | 3.2 GHz |
| Bus type | no data | DMI 2.0 |
| Multiplier | no data | 29 |
| L1 cache | 64 KB (per core) | 256 KB |
| L2 cache | 256 KB (per core) | 1 MB |
| L3 cache | 12 MB (shared) | 6 MB |
| Chip lithography | 32 nm | 14 nm |
| Die size | 239 mm2 | 246.24 mm2 |
| Maximum core temperature | 76 °C | 105 °C |
| Number of transistors | 1,170 million | 3200 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon E5645 and Xeon D-1627 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 | FCBGA1667 |
| Power consumption (TDP) | 80 Watt | 45 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5645 and Xeon D-1627. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | Intel® AVX2 |
| AES-NI | + | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| QuickAssist | no data | - |
| Turbo Boost Technology | 1.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | - | + |
| Idle States | + | + |
| Thermal Monitoring | - | + |
| Demand Based Switching | + | no data |
| PAE | 40 Bit | no data |
| GPIO | no data | + |
| AMT | no data | SPS 3.0 |
| Quiet System | no data | - |
Security technologies
Xeon E5645 and Xeon D-1627 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| Secure Key | no data | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5645 and Xeon D-1627 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5645 and Xeon D-1627. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4, DDR3 |
| Maximum memory size | 288 GB | 128 GB |
| Max memory channels | 3 | 2 |
| Maximum memory bandwidth | 32 GB/s | 34.124 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by Xeon E5645 and Xeon D-1627.
| PCIe version | 2.0 | 2.0/3.0 |
| PCI Express lanes | no data | 32 |
| USB revision | no data | 2.0/3.0 |
| Total number of SATA ports | no data | 6 |
| Max number of SATA 6 Gb/s Ports | no data | 6 |
| Number of USB ports | no data | 8 |
| Integrated LAN | no data | 4x 10 GBE |
| UART | no data | + |
Pros & cons summary
| Recency | 16 March 2010 | 2 April 2019 |
| Physical cores | 6 | 4 |
| Threads | 12 | 8 |
| Chip lithography | 32 nm | 14 nm |
| Power consumption (TDP) | 80 Watt | 45 Watt |
Xeon E5645 has 50% more physical cores and 50% more threads.
Xeon D-1627, on the other hand, has an age advantage of 9 years, a 128.6% more advanced lithography process, and 77.8% lower power consumption.
We couldn't decide between Xeon E5645 and Xeon D-1627. We've got no test results to judge.
Should you still have questions on choice between Xeon E5645 and Xeon D-1627, ask them in Comments section, and we shall answer.
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