Atom E645C vs Xeon E5-2650 v4
Primary details
Comparing Xeon E5-2650 v4 and Atom E645C processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 787 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 87.78 | no data |
| Market segment | Server | Laptop |
| Series | Intel Xeon E5 | no data |
| Architecture codename | Broadwell (2015−2019) | Stellarton (2010) |
| Release date | 20 June 2016 (7 years ago) | 22 November 2010 (13 years ago) |
| Launch price (MSRP) | $1,166 | no data |
| Current price | $39 (0x MSRP) | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5-2650 v4 and Atom E645C 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 | 12 (Dodeca-Core) | 1 (Single-Core) |
| Threads | 24 | 2 |
| Base clock speed | 2.2 GHz | no data |
| Boost clock speed | 2.9 GHz | 1 GHz |
| Bus support | 2 × 9.6 GT/s | no data |
| L1 cache | no data | 64 KB (per core) |
| L2 cache | 3 MB | 512 KB (per core) |
| L3 cache | 30 MB | 0 KB |
| Chip lithography | 14 nm | 45 nm |
| Die size | 306.18 mm2 | 26 mm2 |
| Maximum core temperature | 80 °C | no data |
| Number of transistors | 4700 Million | 47 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Xeon E5-2650 v4 and Atom E645C 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 | FCLGA2011 | Intel BGA1466 |
| Power consumption (TDP) | 105 Watt | 4 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2650 v4 and Atom E645C. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | no data |
| AES-NI | + | no data |
| AVX | + | no data |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | + |
| TSX | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | no data |
| Flex Memory Access | - | no data |
| Demand Based Switching | + | no data |
| PAE | 46 Bit | no data |
| Status | Discontinued | no data |
Security technologies
Xeon E5-2650 v4 and Atom E645C technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Secure Key | + | no data |
| Identity Protection | - | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-2650 v4 and Atom E645C are enumerated here.
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2650 v4 and Atom E645C. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400 | DDR2 |
| Maximum memory size | 1.5 TB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 76.8 GB/s | no data |
| ECC memory support | + | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel GMA 600 |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2650 v4 and Atom E645C.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 40 | no data |
Pros & cons summary
| Recency | 20 June 2016 | 22 November 2010 |
| Physical cores | 12 | 1 |
| Threads | 24 | 2 |
| Chip lithography | 14 nm | 45 nm |
| Power consumption (TDP) | 105 Watt | 4 Watt |
We couldn't decide between Xeon E5-2650 v4 and Atom E645C. We've got no test results to judge.
Be aware that Xeon E5-2650 v4 is a server/workstation processor while Atom E645C is a notebook one.
Should you still have questions on choice between Xeon E5-2650 v4 and Atom E645C, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
