| General information | |
| Type | CPU / Microprocessor |
| Market segment | Server |
| Family | Intel Xeon E5-1600 v3 |
| Model number | E5-1620 v3 |
| CPU part numbers | is an OEM/tray CPU |
| | BX80644E51620V3 is a boxed CPU |
| Spec code | SR20P |
| Frequency | 3500 MHz |
| Turbo frequency | 3600 MHz |
| Bus speed | 5 GT/s DMI |
| Clock multiplier | 35 |
| Package | 2011-land Flip-Chip Land Grid Array |
| Socket | Socket 2011-3 / R3 / LGA2011-3 |
| | |
| Architecture / Microarchitecture | |
| Microarchitecture | Haswell |
| Processor core | Haswell-EP |
| Core stepping | R2 (QGZY, SR20P) |
| CPUID | 306F2 (SR20P) |
| Manufacturing process | 0.022 micron |
| Data width | 64 bit |
| The number of CPU cores | 4 |
| The number of threads | 8 |
| Floating Point Unit | Integrated |
| Level 1 cache size | 4 x 32 KB |
| Level 2 cache size | 4 x 256 KB |
| Level 3 cache size | 10 MB |
| Physical memory | 768 GB |
| Multiprocessing | Uniprocessor |
| | |
| Integrated peripherals / components | |
| Integrated graphics | None |
| Memory controller | The number of controllers: 1 |
| | Memory channels: 4 |
| | Supported memory: DDR4-1333, DDR4-1600, DDR4-1866, DDR4-2133 |
| | Maximum memory bandwidth (GB/s): 68 |
| | ECC supported: Yes |
| Other peripherals | Direct Media Interface 2.0 |
| | PCI Express 3.0 interface (40 lanes) |
| | |
| Electrical / Thermal parameters | |
| V core | 0.65V - 1.3V |
| Maximum operating temperature | 66.2°C |
| Minimum power dissipation | 26 Watt (C1E state) |
| | 12 Watt (C6 state) |
| Thermal Design Power | 140 Watt |
