Xeon E5645 vs E5 1680 v4
Aggregate performance score
Xeon E5 1680 v4 outperforms Xeon E5645 by a whopping 182% based on our aggregate benchmark results.
Primary details
Comparing Xeon E5-1680 v4 and Xeon E5645 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 854 | 1600 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.95 | 1.28 |
| Market segment | Server | Server |
| Series | Intel Xeon E5 | no data |
| Power efficiency | 6.05 | 3.76 |
| Architecture codename | Broadwell-EP (2016) | Westmere-EP (2010−2011) |
| Release date | 20 June 2016 (8 years ago) | 16 March 2010 (14 years ago) |
| Launch price (MSRP) | $1,723 | $294 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon E5 1680 v4 has 52% better value for money than Xeon E5645.
Detailed specifications
Xeon E5-1680 v4 and Xeon E5645 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 | 8 (Octa-Core) | 6 (Hexa-Core) |
| Threads | 16 | 12 |
| Base clock speed | 3.4 GHz | 2.4 GHz |
| Boost clock speed | 4 GHz | 2.67 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 5 GT/s | no data |
| Multiplier | 34 | no data |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 2 MB | 256 KB (per core) |
| L3 cache | 20 MB (shared) | 12 MB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | 246.24 mm2 | 239 mm2 |
| Maximum core temperature | no data | 76 °C |
| Maximum case temperature (TCase) | 70 °C | no data |
| Number of transistors | 3200 Million | 1,170 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon E5-1680 v4 and Xeon E5645 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 | 1 (Uniprocessor) | 2 |
| Socket | FCLGA2011 | FCLGA1366,LGA1366 |
| Power consumption (TDP) | 140 Watt | 80 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-1680 v4 and Xeon E5645. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | Intel® SSE4.2 |
| AES-NI | + | + |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | 1.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | - |
| Flex Memory Access | - | no data |
| Demand Based Switching | + | + |
| PAE | 46 Bit | 40 Bit |
| Turbo Boost Max 3.0 | + | no data |
Security technologies
Xeon E5-1680 v4 and Xeon E5645 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| Secure Key | + | no data |
| Identity Protection | + | - |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-1680 v4 and Xeon E5645 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-1680 v4 and Xeon E5645. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400 | DDR3 |
| Maximum memory size | 1.5 TB | 288 GB |
| Max memory channels | 4 | 3 |
| Maximum memory bandwidth | 76.8 GB/s | 32 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-1680 v4 and Xeon E5645.
| PCIe version | 3.0 | 2.0 |
| PCI Express lanes | 40 | no data |
Pros & cons summary
| Performance score | 9.29 | 3.30 |
| Recency | 20 June 2016 | 16 March 2010 |
| Physical cores | 8 | 6 |
| Threads | 16 | 12 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 140 Watt | 80 Watt |
Xeon E5 1680 v4 has a 181.5% higher aggregate performance score, an age advantage of 6 years, 33.3% more physical cores and 33.3% more threads, and a 128.6% more advanced lithography process.
Xeon E5645, on the other hand, has 75% lower power consumption.
The Xeon E5 1680 v4 is our recommended choice as it beats the Xeon E5645 in performance tests.
Should you still have questions on choice between Xeon E5 1680 v4 and Xeon E5645, ask them in Comments section, and we shall answer.
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