AMD EPYC 9455: specs and benchmarks
Aggregate performance score
EPYC 9455 provides server-grade benchmark performance at 63.25% of a leader's which is a 96-core Ryzen Threadripper PRO 9995WX.
Contents
Summary
AMD started EPYC 9455 sales 10 October 2024 at a recommended price of $5,412. This is a high-end Turin architecture desktop processor primarily aimed at professional systems. It has 48 cores and 96 threads, and is based on 4 nm manufacturing technology, with a maximum frequency of 4400 MHz and a locked multiplier.
Compatibility-wise, this is AMD Socket SP5 processor with a TDP of 300 Watt. It supports DDR5 memory.
Primary details
EPYC 9455 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 25 | |
| Place by popularity | not in top-100 | |
| Cost-effectiveness evaluation | 9.33 | |
| Market segment | Server | |
| Power efficiency | 8.92 | of 100.00 (Apple M4 (8 cores)) |
| Designer | AMD | |
| Manufacturer | TSMC | |
| Architecture codename | Turin (2024) | |
| Release date | 10 October 2024 (1 year ago) | |
| Launch price (MSRP) | $5,412 | of 19,000 (Xeon 6788P) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
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 | 48 (Octatetraconta-Core) | |
| Threads | 96 | |
| Base clock speed | 3.15 GHz | of 4.7 GHz (Ryzen Threadripper PRO 9945WX) |
| Boost clock speed | 4.4 GHz | of 6.2 GHz (Core i9-14900KS) |
| L1 cache | 80 KB (per core) | of 80 KB (EPYC 9965) |
| L2 cache | 1 MB (per core) | of 2 MB (Xeon 6980P) |
| L3 cache | 192 MB (shared) | of 1152 MB (EPYC 9684X) |
| Chip lithography | 4 nm | of 3 nm (EPYC 9965) |
| Die size | 6x 70.6 mm2 | |
| Number of transistors | 49,890 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + |
Compatibility
Information on EPYC 9455 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.
| Number of CPUs in a configuration | 2 | of 8 (Xeon Platinum 8454H) |
| Socket | SP5 | |
| Power consumption (TDP) | 300 Watt | of 500 Watt (EPYC 9755) |
Technologies and extensions
Technological capabilities and additional instructions supported by EPYC 9455. You'll probably need this information if you require some particular technology.
| AES-NI | + | |
| AVX | + | |
| Precision Boost 2 | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| AMD-V | + |
Memory specs
Types, maximum amount and channel number of RAM supported by EPYC 9455's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR5 |
Graphics specifications
General parameters of a GPU integrated into EPYC 9455.
| Integrated graphics card | N/A |
Peripherals
Specifications and connection types of supported peripherals.
| PCIe version | 5.0 | |
| PCI Express lanes | 128 | of 144 (Threadripper PRO 7955WX) |
Benchmark performance
Single-core and multi-core benchmark results of EPYC 9455. 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 EPYC 9455.
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
