Xeon D-1521 vs Ryzen Threadripper 1950X
Aggregate performance score
Ryzen Threadripper 1950X outperforms Xeon D-1521 by a whopping 385% based on our aggregate benchmark results.
Primary details
Comparing Ryzen Threadripper 1950X and Xeon D-1521 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 356 | 1500 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 5.17 | 2.46 |
| Market segment | Desktop processor | Server |
| Series | AMD Ryzen Threadripper | Intel Xeon D |
| Power efficiency | 9.13 | 7.54 |
| Architecture codename | Zen (2017−2020) | Broadwell (2015−2019) |
| Release date | 13 July 2017 (7 years ago) | 1 November 2015 (8 years ago) |
| Launch price (MSRP) | $999 | $199 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Ryzen Threadripper 1950X has 110% better value for money than Xeon D-1521.
Detailed specifications
Ryzen Threadripper 1950X and Xeon D-1521 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 | 16 (Hexadeca-Core) | 4 (Quad-Core) |
| Threads | 32 | 8 |
| Base clock speed | 3.4 GHz | 2.4 GHz |
| Boost clock speed | 3.4 GHz | 2.7 GHz |
| Bus type | no data | DMI 2.0 |
| Bus rate | 4 × 8 GT/s | no data |
| Multiplier | 34 | 24 |
| L1 cache | 1.5 MB | 256 KB |
| L2 cache | 8 MB | 1 MB |
| L3 cache | 32 MB | 6 MB |
| Chip lithography | 14 nm | 14 nm |
| Die size | 213 mm2 | 246.24 mm2 |
| Maximum core temperature | 68 °C | no data |
| Maximum case temperature (TCase) | no data | 80 °C |
| Number of transistors | 9600 Million | 3200 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen Threadripper 1950X and Xeon D-1521 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) | 1 (Uniprocessor) |
| Socket | SP3r2 | FCBGA1667 |
| Power consumption (TDP) | 180 Watt | 45 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen Threadripper 1950X and Xeon D-1521. You'll probably need this information if you require some particular technology.
| Instruction set extensions | SSE4.2, SSE4A, AMD-V, AES, AVX2, FMA3, SHA | Intel® AVX2 |
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| GPIO | no data | + |
Security technologies
Ryzen Threadripper 1950X and Xeon D-1521 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 Ryzen Threadripper 1950X and Xeon D-1521 are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen Threadripper 1950X and Xeon D-1521. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Quad-channel | DDR4, DDR3 |
| Maximum memory size | 2 TiB | 128 GB |
| Max memory channels | 4 | 2 |
| Maximum memory bandwidth | 85.33 GB/s | 34.124 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by Ryzen Threadripper 1950X and Xeon D-1521.
| PCIe version | 3.0 | 2.0/3.0 |
| PCI Express lanes | 60 | 24 |
| USB revision | no data | 2.0/3.0 |
| Total number of SATA ports | no data | 6 |
| Number of USB ports | no data | 8 |
| 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.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
Pros & cons summary
| Performance score | 18.03 | 3.72 |
| Recency | 13 July 2017 | 1 November 2015 |
| Physical cores | 16 | 4 |
| Threads | 32 | 8 |
| Power consumption (TDP) | 180 Watt | 45 Watt |
Ryzen Threadripper 1950X has a 384.7% higher aggregate performance score, an age advantage of 1 year, and 300% more physical cores and 300% more threads.
Xeon D-1521, on the other hand, has 300% lower power consumption.
The Ryzen Threadripper 1950X is our recommended choice as it beats the Xeon D-1521 in performance tests.
Note that Ryzen Threadripper 1950X is a desktop processor while Xeon D-1521 is a server/workstation one.
Should you still have questions on choice between Ryzen Threadripper 1950X and Xeon D-1521, ask them in Comments section, and we shall answer.
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