EPYC 9684X vs EPYC Embedded 9755
Aggregate performance score
EPYC Embedded 9755 outperforms EPYC 9684X by a substantial 34% 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 | 2 | 20 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.61 |
| Market segment | Server | Server |
| Power efficiency | 7.94 | 7.38 |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Turin (2024−2025) | Genoa-X (2023) |
| Release date | 11 March 2025 (1 year ago) | 13 June 2023 (3 years ago) |
| Launch price (MSRP) | no data | $14,756 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Currently popular graphics cards are shown for comparison.
Detailed specifications
Basic parameters of EPYC Embedded 9755 and EPYC 9684X: 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 | 128 | 96 |
| Threads | 256 | 192 |
| Base clock speed | 2.7 GHz | 2.55 GHz |
| Boost clock speed | 4.1 GHz | 3.7 GHz |
| L1 cache | 80 KB (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 512 MB (shared) | 1152 MB (shared) |
| Chip lithography | 4 nm | 5 nm |
| Die size | 16x 70.6 mm2 | 12x 72 mm2 |
| Number of transistors | 133,040 million | 135,240 million |
| 64 bit support | + | + |
Compatibility
Information on EPYC Embedded 9755 and EPYC 9684X 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 | 2 |
| Socket | SP5 | SP5 |
| Power consumption (TDP) | 500 Watt | 400 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC Embedded 9755 and EPYC 9684X. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC Embedded 9755 and EPYC 9684X are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC Embedded 9755 and EPYC 9684X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | N/A |
Peripherals
Specifications and connection of peripherals supported by EPYC Embedded 9755 and EPYC 9684X.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 128 | 128 |
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 | 95.79 | 71.27 |
| Recency | 11 March 2025 | 13 June 2023 |
| Physical cores | 128 | 96 |
| Threads | 256 | 192 |
| Chip lithography | 4 nm | 5 nm |
| Power consumption (TDP) | 500 Watt | 400 Watt |
EPYC Embedded 9755 has a 34% higher aggregate performance score, an age advantage of 1 year, 33% more physical cores and 33% more threads, and a 25% more advanced lithography process.
EPYC 9684X, on the other hand, has 25% lower power consumption.
The AMD EPYC Embedded 9755 is our recommended choice as it beats the AMD EPYC 9684X in performance tests.
Other comparisons
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