Atom D2550 vs Xeon D-1521
Primary details
Comparing Xeon D-1521 and Atom D2550 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1421 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.15 | no data |
| Market segment | Server | Laptop |
| Series | Intel Xeon D | Intel Atom |
| Architecture codename | Broadwell (2015−2019) | Cedarview (2011−2012) |
| Release date | 1 November 2015 (8 years ago) | 1 November 2011 (12 years ago) |
| Launch price (MSRP) | $199 | no data |
| Current price | $2202 (11.1x MSRP) | $543 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon D-1521 and Atom D2550 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 | 4 (Quad-Core) | 2 (Dual-core) |
| Threads | 8 | 4 |
| Base clock speed | 2.4 GHz | 1.86 GHz |
| Boost clock speed | 2.7 GHz | 1.87 GHz |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 256K (per core) | 512K (per core) |
| L3 cache | 1.5 MB (per core) | 0 KB |
| Chip lithography | 14 nm | 32 nm |
| Die size | 246.24 mm2 | 66 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 80 °C | no data |
| Number of transistors | 3,200 million | 176 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Xeon D-1521 and Atom D2550 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 | 1 |
| Socket | FCBGA1667 | FCBGA559 |
| Power consumption (TDP) | 45 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon D-1521 and Atom D2550. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| AES-NI | + | no data |
| AVX | + | no data |
| Enhanced SpeedStep (EIST) | + | - |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | + |
| TSX | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | no data |
| PAE | no data | 36 Bit |
| GPIO | + | no data |
| Status | Launched | Discontinued |
Security technologies
Xeon D-1521 and Atom D2550 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Secure Key | + | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon D-1521 and Atom D2550 are enumerated here.
| VT-d | + | - |
| VT-x | + | - |
| VT-i | no data | - |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon D-1521 and Atom D2550. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4, DDR3 | DDR3 |
| Maximum memory size | 128 GB | 4 GB |
| Max memory channels | 2 | 1 |
| Maximum memory bandwidth | 34.124 GB/s | 6.4 GB/s |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel Graphics Media Accelerator (GMA) 3650 |
Graphics interfaces
Available interfaces and connections of Xeon D-1521 and Atom D2550 integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by Xeon D-1521 and Atom D2550.
| PCIe version | 2.0/3.0 | no data |
| PCI Express lanes | 32 | 4 |
| USB revision | 2.0/3.0 | no data |
| Total number of SATA ports | 6 | no data |
| Number of USB ports | 8 | no data |
| Integrated LAN | + | no data |
| UART | + | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Benchmark coverage: 68%
Xeon D-1521 outperforms Atom D2550 by 1293% in Passmark.
Pros & cons summary
| Recency | 1 November 2015 | 1 November 2011 |
| Physical cores | 4 | 2 |
| Threads | 8 | 4 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 45 Watt | 10 Watt |
We couldn't decide between Xeon D-1521 and Atom D2550. We've got no test results to judge.
Be aware that Xeon D-1521 is a server/workstation processor while Atom D2550 is a notebook one.
Should you still have questions on choice between Xeon D-1521 and Atom D2550, 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.
