AMD Ryzen 9 4900HS | AMD EPYC 7643 | |
CPU comparisonAMD Ryzen 9 4900HS or AMD EPYC 7643 - 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 4900HS has 8 cores with 16 threads and clocks with a maximum frequency of 4.30 GHz. Up to 64 GB of memory is supported in 2 memory channels. The AMD Ryzen 9 4900HS was released in Q2/2020. The AMD EPYC 7643 has 48 cores with 96 threads and clocks with a maximum frequency of 3.60 GHz. The CPU supports up to 4096 GB of memory in 8 memory channels. The AMD EPYC 7643 was released in Q1/2021. |
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AMD Ryzen 9 (35) | Family | AMD EPYC (129) |
AMD Ryzen 4000H (6) | CPU group | AMD EPYC 7003 (29) |
3 | Generation | 3 |
Renoir (Zen 2) | Architecture | Milan (Zen 3) |
Mobile | Segment | Desktop / Server |
-- | Predecessor | AMD EPYC 7642 |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 9 4900HS is a 8 core processor with a clock frequency of 3.00 GHz (4.30 GHz). The AMD EPYC 7643 has 48 CPU cores with a clock frequency of 2.30 GHz (3.60 GHz). |
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AMD Ryzen 9 4900HS | Characteristic | AMD EPYC 7643 |
8 | Cores | 48 |
16 | Threads | 96 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | No |
3.00 GHz | Frequency | 2.30 GHz |
4.30 GHz | Turbo Frequency (1 Core) | 3.60 GHz |
3.90 GHz | Turbo Frequency (All Cores) | 3.40 GHz |
Internal GraphicsThe integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs. |
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AMD Radeon RX Vega 8 (Renoir) | GPU | no iGPU |
0.40 GHz | GPU frequency | -- |
1.75 GHz | GPU (Turbo) | -- |
9 | GPU Generation | -- |
7 nm | Technology | |
3 | Max. displays | |
8 | Compute units | -- |
512 | 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 RX Vega 8 (Renoir) | 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 |
No | Codec AV1 | No |
Decode / Encode | Codec AVC | No |
Decode | Codec VC-1 | No |
Decode / Encode | Codec JPEG | No |
Memory & PCIeThe AMD Ryzen 9 4900HS supports a maximum of 64 GB of memory in 2 memory channels. The AMD EPYC 7643 can connect up to 4096 GB of memory in 8 memory channels. |
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AMD Ryzen 9 4900HS | Characteristic | AMD EPYC 7643 |
LPDDR4-4266, DDR4-3200 | Memory | DDR4-3200 |
64 GB | Max. Memory | 4096 GB |
2 (Dual Channel) | Memory channels | 8 (Octa Channel) |
51.2 GB/s | Max. Bandwidth | 204.8 GB/s |
Yes | ECC | Yes |
-- | L2 Cache | -- |
8.00 MB | L3 Cache | 256.00 MB |
3.0 | PCIe version | 4.0 |
12 | PCIe lanes | 128 |
11.8 GB/s | PCIe Bandwidth | 252.0 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Ryzen 9 4900HS has a TDP of 35 W, that of the AMD EPYC 7643 is 240 W. |
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AMD Ryzen 9 4900HS | Characteristic | AMD EPYC 7643 |
35 W | TDP (PL1 / PBP) | 240 W |
-- | TDP (PL2) | -- |
54 W | TDP up | -- |
35 W | TDP down | 225 W |
105 °C | Tjunction max. | -- |
Technical detailsThe AMD Ryzen 9 4900HS has a 8.00 MB cache, while the AMD EPYC 7643 cache has a total of 256.00 MB. |
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AMD Ryzen 9 4900HS | Characteristic | AMD EPYC 7643 |
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 |
FP6 | Socket | SP3 |
AMD-V, SVM | Virtualization | AMD-V, SVM |
Yes | AES-NI | Yes |
Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
Q2/2020 | Release date | Q1/2021 |
-- | Release price | 4995 $ |
show more data | show more data | |
AMD Ryzen 9 4900HS
8C 16T @ 4.30 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 3.90 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 4.30 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 3.90 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 3.90 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 4.30 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 3.90 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 4.30 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 3.90 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Ryzen 9 4900HS
AMD Radeon RX Vega 8 (Renoir) @ 1.75 GHz |
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AMD EPYC 7643
@ 0.00 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 3.90 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 2.30 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 4.30 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Ryzen 9 4900HS
8C 16T @ 3.90 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
Devices using this processor |
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AMD Ryzen 9 4900HS | AMD EPYC 7643 |
Asus Zephyrus G14 | Unknown |