Xeon D-1521 vs Core i7-7700K
Aggregate performance score
i7-7700K outperforms Xeon D-1521 by an impressive 70% based on our aggregate benchmark results.
Primary details
Comparing Core i7-7700K and Xeon D-1521 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1015 | 1425 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.37 | 0.15 |
| Market segment | Desktop processor | Server |
| Series | Intel Core i7 (Desktop) | Intel Xeon D |
| Architecture codename | Kaby Lake (2016−2019) | Broadwell (2015−2019) |
| Release date | 3 January 2017 (7 years ago) | 1 November 2015 (8 years ago) |
| Launch price (MSRP) | $339 | $199 |
| Current price | $222 (0.7x MSRP) | $2202 (11.1x MSRP) |
Cost-effectiveness evaluation
Performance per price, higher is better.
i7-7700K has 2147% better value for money than Xeon D-1521.
Detailed specifications
Core i7-7700K 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 | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 8 | 8 |
| Base clock speed | 4.2 GHz | 2.4 GHz |
| Boost clock speed | 4.5 GHz | 2.4 GHz |
| L1 cache | 256 KB | 256 KB |
| L2 cache | 1 MB | 1 MB |
| L3 cache | 8 MB | 6 MB |
| Chip lithography | 14 nm | 14 nm |
| Die size | no data | 246.24 mm2 |
| Maximum case temperature (TCase) | 72 °C | 80 °C |
| Number of transistors | no data | 3200 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | Yes | No |
Compatibility
Information on Core i7-7700K 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 | FCLGA1151 | Intel BGA 1667 |
| Power consumption (TDP) | 91 Watt | 45 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-7700K and Xeon D-1521. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Hyper-Threading Technology | + | no data |
| TSX | + | + |
Security technologies
Core i7-7700K and Xeon D-1521 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-7700K and Xeon D-1521 are enumerated here.
| AMD-V | + | no data |
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-7700K and Xeon D-1521. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR4 | DDR3, DDR4 Dual-channel |
| Maximum memory size | 64 GB | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | 38.397 GB/s | 34.124 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 630 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-7700K and Xeon D-1521.
| PCIe version | 3.0 | 3.0 |
| PCI Express lanes | 16 | 24 |
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.
Core i7-7700K outperforms Xeon D-1521 by 70% based on our aggregate benchmark results.
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%
Core i7-7700K outperforms Xeon D-1521 by 69% in Passmark.
Pros & cons summary
| Performance score | 6.24 | 3.68 |
| Recency | 3 January 2017 | 1 November 2015 |
| Cost | $339 | $199 |
| Power consumption (TDP) | 91 Watt | 45 Watt |
i7-7700K has a 69.6% higher aggregate performance score, and an age advantage of 1 year.
Xeon D-1521, on the other hand, has its recommended price lower by $140, and 102.2% lower power consumption.
The Core i7-7700K is our recommended choice as it beats the Xeon D-1521 in performance tests.
Note that Core i7-7700K is a desktop processor while Xeon D-1521 is a server/workstation one.
Should you still have questions on choice between Core i7-7700K and Xeon D-1521, 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.
