AMD Ryzen 9 7900X vs AMD EPYC 7551
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CPU comparison with benchmarks
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| AMD Ryzen 9 7900X | AMD EPYC 7551 | |
CPU comparisonIn this CPU comparison, we compare the AMD Ryzen 9 7900X and the AMD EPYC 7551 and use benchmarks to check which processor is faster.
We compare the AMD Ryzen 9 7900X 12 core processor released in Q4/2022 with the AMD EPYC 7551 which has 32 CPU cores and was introduced in Q3/2017. |
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| AMD Ryzen 9 (35) | Family | AMD EPYC (129) |
| AMD Ryzen 7000 (14) | CPU group | AMD EPYC 7001 (12) |
| 6 | Generation | 1 |
| Raphael (Zen 4) | Architecture | Naples (Zen) |
| Desktop / Server | Segment | Desktop / Server |
| AMD Ryzen 9 5900X | Predecessor | -- |
| -- | Successor | AMD EPYC 7552 |
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CPU Cores and Base FrequencyThe AMD Ryzen 9 7900X is a 12 core processor with a clock frequency of 4.70 GHz (5.60 GHz). The processor can compute 24 threads at the same time. The AMD EPYC 7551 clocks with 2.00 GHz (3.00 GHz), has 32 CPU cores and can calculate 64 threads in parallel. |
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| AMD Ryzen 9 7900X | Characteristic | AMD EPYC 7551 |
| 12 | Cores | 32 |
| 24 | Threads | 64 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| Yes | Overclocking ? | No |
| 4.70 GHz | Frequency | 2.00 GHz |
| 5.60 GHz | Turbo Frequency (1 Core) | 3.00 GHz |
| 5.40 GHz | Turbo Frequency (All Cores) | 2.55 GHz |
Internal GraphicsGraphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback. |
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| AMD Radeon Graphics (Raphael) | GPU | no iGPU |
| 0.40 GHz | GPU frequency | -- |
| 2.20 GHz | GPU (Turbo) | -- |
| 9 | GPU Generation | -- |
| 5 nm | Technology | |
| 3 | Max. displays | |
| 2 | Compute units | -- |
| 128 | Shader | -- |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| 8 GB | Max. GPU Memory | -- |
| 12 | DirectX Version | -- |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
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| AMD Radeon Graphics (Raphael) | GPU | no iGPU |
| Decode / Encode | Codec h265 / HEVC (8 bit) | No |
| Decode / Encode | Codec h265 / HEVC (10 bit) | No |
| Decode / Encode | Codec h264 | No |
| Decode / Encode | Codec VP9 | No |
| Decode / Encode | Codec VP8 | No |
| Decode | Codec AV1 | No |
| Decode / Encode | Codec AVC | No |
| Decode | Codec VC-1 | No |
| Decode / Encode | Codec JPEG | No |
Memory & PCIeUp to 128 GB of memory in a maximum of 2 memory channels is supported by the AMD Ryzen 9 7900X, while the AMD EPYC 7551 supports a maximum of GB of memory with a maximum memory bandwidth of 170.6 GB/s enabled. |
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| AMD Ryzen 9 7900X | Characteristic | AMD EPYC 7551 |
| DDR5-5200 | Memory | DDR4-2666 |
| 128 GB | Max. Memory | |
| 2 (Dual Channel) | Memory channels | 8 (Octa Channel) |
| 83.2 GB/s | Max. Bandwidth | 170.6 GB/s |
| Yes | ECC | Yes |
| 12.00 MB | L2 Cache | -- |
| 64.00 MB | L3 Cache | 64.00 MB |
| 5.0 | PCIe version | 3.0 |
| 24 | PCIe lanes | 128 |
| 94.5 GB/s | PCIe Bandwidth | 126.1 GB/s |
Thermal ManagementThe AMD Ryzen 9 7900X has a TDP of 170 W. The TDP of the AMD EPYC 7551 is 180 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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| AMD Ryzen 9 7900X | Characteristic | AMD EPYC 7551 |
| 170 W | TDP (PL1 / PBP) | 180 W |
| 230 W | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| 95 °C | Tjunction max. | -- |
Technical detailsThe AMD Ryzen 9 7900X has 76.00 MB cache and is manufactured in 5 nm. The cache of AMD EPYC 7551 is at 64.00 MB. The processor is manufactured in 14 nm. |
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| AMD Ryzen 9 7900X | Characteristic | AMD EPYC 7551 |
| 5 nm | Technology | 14 nm |
| Chiplet | Chip design | Chiplet |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
| AM5 (LGA 1718) | Socket | SP3 |
| AMD-V, SVM | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
| Q4/2022 | Release date | Q3/2017 |
| 549 $ | Release price | 3200 $ |
| show more data | show more data | |
12C 24T @ 4.70 GHz (5.60 GHz) buy now on Amazon and save!
32C 64T @ 2.00 GHz (3.00 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 CPU benchmarks
Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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AMD Ryzen 9 7900X
12C 24T @ 5.40 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
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Cinebench R15 (Single-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD Ryzen 9 7900X
12C 24T @ 5.60 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
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Cinebench R15 (Multi-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD Ryzen 9 7900X
12C 24T @ 5.40 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
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Cinebench 2024 (Single-Core)
The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
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AMD Ryzen 9 7900X
12C 24T @ 5.60 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
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Cinebench 2024 (Multi-Core)
The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
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AMD Ryzen 9 7900X
12C 24T @ 5.60 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
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Cinebench R23 (Single-Core)
Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD Ryzen 9 7900X
12C 24T @ 5.60 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
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Cinebench R23 (Multi-Core)
Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD Ryzen 9 7900X
12C 24T @ 5.40 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
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Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD Ryzen 9 7900X
12C 24T @ 5.60 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD Ryzen 9 7900X
12C 24T @ 5.40 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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AMD Ryzen 9 7900X
12C 24T @ 5.60 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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AMD Ryzen 9 7900X
12C 24T @ 5.40 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
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Cinebench R20 (Single-Core)
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD Ryzen 9 7900X
12C 24T @ 5.60 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
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Cinebench R20 (Multi-Core)
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD Ryzen 9 7900X
12C 24T @ 5.40 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
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iGPU - FP32 Performance (Single-precision GFLOPS)
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
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AMD Ryzen 9 7900X
AMD Radeon Graphics (Raphael) @ 2.20 GHz |
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AMD EPYC 7551
@ 0.00 GHz |
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Blender 3.1 Benchmark
In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
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AMD Ryzen 9 7900X
12C 24T @ 5.40 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
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CPU-Z Benchmark 17 (Single-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
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AMD Ryzen 9 7900X
12C 24T @ 5.40 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
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CPU-Z Benchmark 17 (Multi-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
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AMD Ryzen 9 7900X
12C 24T @ 4.70 GHz |
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AMD EPYC 7551
32C 64T @ 2.00 GHz |
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CPU performance per watt (efficiency)
Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
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AMD Ryzen 9 7900X
29,306 CB R23 MC @ 186 W |
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AMD EPYC 7551
2.00 GHz |
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Devices using this processor |
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| AMD Ryzen 9 7900X | AMD EPYC 7551 |
| Unknown | Unknown |
News and articles for the AMD Ryzen 9 7900X and the AMD EPYC 7551
Why the new AMD Ryzen 7000 processors for the AM5 socket are currently not a good deal
Posted by Stefan on 2022-10-11
At the end of September 2022, the time had come: AMD presented its latest desktop processors called AMD Ryzen 7000. Initially, 4 processors with 6 to 16 CPU cores were released.
The new socket AM5 (LGA 1718) is used for the first time, which is intended to replace the very durable socket AM4 introduced in 2017 as AMDs mainstream platform. This includes (depending on the chipset) PCIe 5.0 support as well as the exclusive use of DDR5 memory on all AM5 mainboards.
Officially, DDR5-5200 is the maximum, but with AMDs EXPO Technology which is similar to Intel's XMP 3.0, AMD now also has a solution for easy overclocking of the main memory. AMD itself names DDR5-6000 as the sweet spot for the new AMD Ryzen 7000 processors.
The new socket AM5 (LGA 1718) is used for the first time, which is intended to replace the very durable socket AM4 introduced in 2017 as AMDs mainstream platform. This includes (depending on the chipset) PCIe 5.0 support as well as the exclusive use of DDR5 memory on all AM5 mainboards.
Officially, DDR5-5200 is the maximum, but with AMDs EXPO Technology which is similar to Intel's XMP 3.0, AMD now also has a solution for easy overclocking of the main memory. AMD itself names DDR5-6000 as the sweet spot for the new AMD Ryzen 7000 processors.
AMD Ryzen 7000 and Intel Core i 13 Gen at almost 6 GHz clock speed
Posted by Stefan on 2022-08-29
In September, both AMD and Intel are introducing their new mainstream desktop processors. It doesn't seem to have been as close as this year for a long time, leaked benchmarks of the new top models from AMD and Intel point to a head-to-head race.
This year even the 6 GHz clock limit is almost within reach. With a good cooler and some overclocking it should be possible to reach the 6 GHz limit. But even in series production, the manufacturers try to realize the highest possible clock frequency, at least on one core.
This year even the 6 GHz clock limit is almost within reach. With a good cooler and some overclocking it should be possible to reach the 6 GHz limit. But even in series production, the manufacturers try to realize the highest possible clock frequency, at least on one core.
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