Xeon 6521P vs Gold 5520+
Aggregate performance score
Xeon 6521P outperforms Xeon Gold 5520+ by a small 6% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 132 | 113 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 23.78 | 33.98 |
| Market segment | Server | Server |
| Power efficiency | 7.20 | 6.94 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Emerald Rapids (2023) | Granite Rapids (2024−2026) |
| Release date | 14 December 2023 (2 years ago) | 24 February 2025 (1 year ago) |
| Launch price (MSRP) | $1,640 | $1,250 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon 6521P has 43% better value for money than Xeon Gold 5520+.
Performance to price scatter graph
Detailed specifications
Xeon Gold 5520+ and Xeon 6521P 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 | 28 (Octacosa-Core) | 24 (Tetracosa-Core) |
| Threads | 56 | 48 |
| Base clock speed | 2.2 GHz | 2.6 GHz |
| Boost clock speed | 4 GHz | 4.1 GHz |
| L1 cache | 80 KB (per core) | 112 KB (per core) |
| L2 cache | 2 MB (per core) | 2 MB (per core) |
| L3 cache | 52.5 MB (shared) | 144 MB (shared) |
| Chip lithography | 10 nm | Intel 3 nm |
| Die size | 2x 763 mm2 | 598 mm2 |
| Maximum case temperature (TCase) | 85 °C | 82 °C |
| 64 bit support | + | + |
Compatibility
Information on Xeon Gold 5520+ and Xeon 6521P 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 | 4677 | FCLGA4710 |
| Power consumption (TDP) | 205 Watt | 225 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Gold 5520+ and Xeon 6521P. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | + | + |
| Deep Learning Boost | - | + |
Security technologies
Xeon Gold 5520+ and Xeon 6521P technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | no data | + |
| SGX | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Gold 5520+ and Xeon 6521P are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Gold 5520+ and Xeon 6521P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5(6400MT/s) |
| Maximum memory size | no data | 4 TB |
| Max memory channels | no data | 8 |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | N/A |
Peripherals
Specifications and connection of peripherals supported by Xeon Gold 5520+ and Xeon 6521P.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 80 | 136 |
Synthetic benchmarks
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.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 34.98 | 37.00 |
| Recency | 14 December 2023 | 24 February 2025 |
| Physical cores | 28 | 24 |
| Threads | 56 | 48 |
| Power consumption (TDP) | 205 Watt | 225 Watt |
Xeon Gold 5520+ has 16.7% more physical cores and 16.7% more threads, and 9.8% lower power consumption.
Xeon 6521P, on the other hand, has a 5.8% higher aggregate performance score, and an age advantage of 1 year.
Given the minimal performance differences, no clear winner can be declared between Intel Xeon Gold 5520+ and Intel Xeon 6521P.
Other comparisons
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