Intel Xeon 6521P: specs and benchmarks
Aggregate performance score
Xeon 6521P provides good benchmark performance at 36.06% of a leader's which is a 192-core EPYC 9965.
Contents
Summary
Intel started Xeon 6521P sales 1 January 2025. This is a desktop processor primarily aimed at professional systems. It has 24 cores and 48 threads, and is based on Intel 3 manufacturing technology, with a maximum frequency of 4100 MHz and a locked multiplier.
Compatibility-wise, this is FCLGA4710 processor with a TDP of 225 Watt. It supports DDR5(6400MT/s) memory.
Primary details
Xeon 6521P processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 120 | |
| Place by popularity | not in top-100 | |
| Market segment | Server | |
| Power efficiency | 15.46 | of 100.00 (Ryzen Z1 Extreme) |
| Designer | Intel | |
| Release date | 1 January 2025 (less than a year ago) |
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 24 (Tetracosa-Core) | |
| Threads | 48 | |
| Base clock speed | 2.6 GHz | of 4.7 GHz (Ryzen 9 7900X) |
| Boost clock speed | 4.1 GHz | of 6.2 GHz (Core i9-14900KS) |
| L3 cache | 144 MB | of 1152 MB (EPYC 9684X) |
| Chip lithography | Intel 3 nm | of 3 nm (EPYC 9965) |
| Maximum core temperature | 82 °C | of 110 °C (Core Ultra 7 265H) |
| 64 bit support | - |
Compatibility
Information on Xeon 6521P compatibility with other computer components and devices: 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.
| Socket | FCLGA4710 | |
| Power consumption (TDP) | 225 Watt | of 500 Watt (EPYC 9965) |
Technologies and extensions
Technological capabilities and additional instructions supported by Xeon 6521P. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX | |
| AES-NI | + | |
| Speed Shift | + | |
| Turbo Boost Technology | 2.0 | |
| Hyper-Threading Technology | + | |
| TSX | + | |
| Deep Learning Boost | + |
Security technologies
Processor technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | |
| EDB | + | |
| SGX | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| VT-d | + | |
| VT-x | + | |
| EPT | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Xeon 6521P's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR5(6400MT/s) | |
| Maximum memory size | 4 TB | of 6 TiB (EPYC 9654) |
| ECC memory support | + |
Peripherals
Specifications and connection types of supported peripherals.
| PCIe version | 5.0 | |
| PCI Express lanes | 136 | of 144 (Threadripper PRO 7955WX) |
Benchmark performance
Single-core and multi-core benchmark results of Xeon 6521P. Overall benchmark performance 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.
Send your test results of Xeon 6521P.
AMD equivalent
According to our data, the closest AMD alternative to Xeon 6521P is Xeon Platinum 8362, which is slower by 2% and lower by 11 positions in our ranking.
Here are some closest AMD rivals to Xeon 6521P:
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
