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AMD Ryzen 9 3900 | AMD EPYC 7443P | |
CPU comparisonAMD Ryzen 9 3900 or AMD EPYC 7443P - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The AMD Ryzen 9 3900 has 12 cores with 24 threads and clocks with a maximum frequency of 4.30 GHz. Up to 128 GB of memory is supported in 2 memory channels. The AMD Ryzen 9 3900 was released in Q3/2019. The AMD EPYC 7443P has 24 cores with 48 threads and clocks with a maximum frequency of 4.00 GHz. The CPU supports up to 4096 GB of memory in 8 memory channels. The AMD EPYC 7443P was released in Q1/2021. |
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AMD Ryzen 9 (40) | Family | AMD EPYC (129) |
AMD Ryzen 3000 (15) | CPU group | AMD EPYC 7003 (29) |
3 | Generation | 3 |
Matisse (Zen 2) | Architecture | Milan (Zen 3) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
AMD Ryzen 9 5900 | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 9 3900 has 12 CPU cores and can calculate 24 threads in parallel. The clock frequency of the AMD Ryzen 9 3900 is 3.10 GHz (4.30 GHz) while the AMD EPYC 7443P has 24 CPU cores and 48 threads can calculate simultaneously. The clock frequency of the AMD EPYC 7443P is at 2.85 GHz (4.00 GHz). |
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AMD Ryzen 9 3900 | Characteristic | AMD EPYC 7443P |
12 | Cores | 24 |
24 | Threads | 48 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
Yes | Overclocking ? | No |
3.10 GHz | Frequency | 2.85 GHz |
4.30 GHz | Turbo Frequency (1 Core) | 4.00 GHz |
-- | Turbo Frequency (All Cores) | 3.60 GHz |
Memory & PCIeThe AMD Ryzen 9 3900 can use up to 128 GB of memory in 2 memory channels. The maximum memory bandwidth is 51.2 GB/s. The AMD EPYC 7443P supports up to 4096 GB of memory in 8 memory channels and achieves a memory bandwidth of up to 204.8 GB/s. |
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AMD Ryzen 9 3900 | Characteristic | AMD EPYC 7443P |
DDR4-3200 | Memory | DDR4-3200 |
128 GB | Max. Memory | 4096 GB |
2 (Dual Channel) | Memory channels | 8 (Octa Channel) |
51.2 GB/s | Max. Bandwidth | 204.8 GB/s |
No | ECC | Yes |
-- | L2 Cache | -- |
64.00 MB | L3 Cache | 128.00 MB |
4.0 | PCIe version | 4.0 |
20 | PCIe lanes | 128 |
39.4 GB/s | PCIe Bandwidth | 252.0 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD Ryzen 9 3900 is 65 W, while the AMD EPYC 7443P has a TDP of 200 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD Ryzen 9 3900 | Characteristic | AMD EPYC 7443P |
65 W | TDP (PL1 / PBP) | 200 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | 165 W |
95 °C | Tjunction max. | -- |
Technical detailsThe AMD Ryzen 9 3900 is manufactured in 7 nm and has 64.00 MB cache. The AMD EPYC 7443P is manufactured in 7 nm and has a 128.00 MB cache. |
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AMD Ryzen 9 3900 | Characteristic | AMD EPYC 7443P |
7 nm | Technology | 7 nm |
Chiplet | Chip design | Chiplet |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
AM4 (PGA 1331) | Socket | SP3 |
AMD-V, SVM | Virtualization | AMD-V, SVM |
Yes | AES-NI | Yes |
Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
Q3/2019 | Release date | Q1/2021 |
485 $ | Release price | 1337 $ |
show more data | show more data | |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
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AMD EPYC 7443P
24C 48T @ 4.00 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
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AMD EPYC 7443P
24C 48T @ 3.60 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
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AMD EPYC 7443P
24C 48T @ 4.00 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
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AMD EPYC 7443P
24C 48T @ 3.60 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
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AMD EPYC 7443P
24C 48T @ 3.60 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
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AMD EPYC 7443P
24C 48T @ 4.00 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
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AMD EPYC 7443P
24C 48T @ 4.00 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
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AMD EPYC 7443P
24C 48T @ 4.00 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
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AMD EPYC 7443P
24C 48T @ 3.60 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
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AMD EPYC 7443P
24C 48T @ 4.00 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
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AMD EPYC 7443P
24C 48T @ 3.60 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
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AMD EPYC 7443P
24C 48T @ 3.60 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
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AMD EPYC 7443P
24C 48T @ 4.00 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
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AMD EPYC 7443P
24C 48T @ 2.85 GHz |
Devices using this processor |
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AMD Ryzen 9 3900 | AMD EPYC 7443P |
Unknown | Unknown |