Xeon 6521P vs EPYC 9965
Aggregate performance score
EPYC 9965 outperforms Xeon 6521P by a whopping 177% 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 | 1 | 122 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Power efficiency | 7.73 | 6.20 |
| Designer | AMD | Intel |
| Manufacturer | TSMC | no data |
| Architecture codename | Turin (2024) | no data |
| Release date | 10 October 2024 (less than a year ago) | 1 January 2025 (less than a year ago) |
| Launch price (MSRP) | $14,813 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 9965 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 | 192 | 24 (Tetracosa-Core) |
| Threads | 384 | 48 |
| Base clock speed | 2.25 GHz | 2.6 GHz |
| Boost clock speed | 3.7 GHz | 4.1 GHz |
| L1 cache | 80 KB (per core) | no data |
| L2 cache | 1 MB (per core) | no data |
| L3 cache | 384 MB (shared) | 144 MB |
| Chip lithography | 3 nm | Intel 3 nm |
| Maximum core temperature | no data | 82 °C |
| 64 bit support | + | - |
Compatibility
Information on EPYC 9965 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 | no data |
| Socket | SP5 | FCLGA4710 |
| Power consumption (TDP) | 500 Watt | 225 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 9965 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 | + | - |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Precision Boost 2 | + | no data |
| Deep Learning Boost | - | + |
Security technologies
EPYC 9965 and Xeon 6521P technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| SGX | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 9965 and Xeon 6521P 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 EPYC 9965 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 |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | no data |
Peripherals
Specifications and connection of peripherals supported by EPYC 9965 and Xeon 6521P.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 128 | 136 |
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.
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 | 100.00 | 36.06 |
| Recency | 10 October 2024 | 1 January 2025 |
| Physical cores | 192 | 24 |
| Threads | 384 | 48 |
| Power consumption (TDP) | 500 Watt | 225 Watt |
EPYC 9965 has a 177.3% higher aggregate performance score, and 700% more physical cores and 700% more threads.
Xeon 6521P, on the other hand, has an age advantage of 2 months, and 122.2% lower power consumption.
The AMD EPYC 9965 is our recommended choice as it beats the Intel Xeon 6521P in performance tests.
Other comparisons
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