AMD EPYC 7643 | Intel Core i9-11900KF | |
CPU comparisonAMD EPYC 7643 or Intel Core i9-11900KF - 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 EPYC 7643 has 48 cores with 96 threads and clocks with a maximum frequency of 3.60 GHz. Up to 4096 GB of memory is supported in 8 memory channels. The AMD EPYC 7643 was released in Q1/2021. The Intel Core i9-11900KF has 8 cores with 16 threads and clocks with a maximum frequency of 5.30 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The Intel Core i9-11900KF was released in Q1/2021. |
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AMD EPYC (129) | Family | Intel Core i9 (78) |
AMD EPYC 7003 (29) | CPU group | Intel Core i 11000 (22) |
3 | Generation | 11 |
Milan (Zen 3) | Architecture | Rocket Lake S |
Desktop / Server | Segment | Desktop / Server |
AMD EPYC 7642 | Predecessor | Intel Core i9-10900KF |
-- | Successor | Intel Core i9-12900KF |
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CPU Cores and Base FrequencyThe AMD EPYC 7643 has 48 CPU cores and can calculate 96 threads in parallel. The clock frequency of the AMD EPYC 7643 is 2.30 GHz (3.60 GHz) while the Intel Core i9-11900KF has 8 CPU cores and 16 threads can calculate simultaneously. The clock frequency of the Intel Core i9-11900KF is at 3.50 GHz (5.30 GHz). |
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AMD EPYC 7643 | Characteristic | Intel Core i9-11900KF |
48 | Cores | 8 |
96 | Threads | 16 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | Yes |
2.30 GHz | Frequency | 3.50 GHz |
3.60 GHz | Turbo Frequency (1 Core) | 5.30 GHz |
3.40 GHz | Turbo Frequency (All Cores) | 4.80 GHz |
Memory & PCIeThe AMD EPYC 7643 can use up to 4096 GB of memory in 8 memory channels. The maximum memory bandwidth is 204.8 GB/s. The Intel Core i9-11900KF supports up to 128 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 51.2 GB/s. |
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AMD EPYC 7643 | Characteristic | Intel Core i9-11900KF |
DDR4-3200 | Memory | DDR4-3200 |
4096 GB | Max. Memory | 128 GB |
8 (Octa Channel) | Memory channels | 2 (Dual Channel) |
204.8 GB/s | Max. Bandwidth | 51.2 GB/s |
Yes | ECC | No |
-- | L2 Cache | 4.00 MB |
256.00 MB | L3 Cache | 16.00 MB |
4.0 | PCIe version | 4.0 |
128 | PCIe lanes | 20 |
252.0 GB/s | PCIe Bandwidth | 39.4 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 7643 is 240 W, while the Intel Core i9-11900KF has a TDP of 125 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD EPYC 7643 | Characteristic | Intel Core i9-11900KF |
240 W | TDP (PL1 / PBP) | 125 W |
-- | TDP (PL2) | 251 W @ 56 s |
-- | TDP up | -- |
225 W | TDP down | 95 W |
-- | Tjunction max. | 100 °C |
Technical detailsThe AMD EPYC 7643 is manufactured in 7 nm and has 256.00 MB cache. The Intel Core i9-11900KF is manufactured in 14 nm and has a 20.00 MB cache. |
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AMD EPYC 7643 | Characteristic | Intel Core i9-11900KF |
7 nm | Technology | 14 nm |
Chiplet | Chip design | Monolithic |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | ISA extensions | SSE4.1, SSE4.2, AVX2, AVX-512 |
SP3 | Socket | LGA 1200 |
AMD-V, SVM | Virtualization | VT-x, VT-x EPT, VT-d |
Yes | AES-NI | Yes |
Windows 10, Linux | Operating systems | Windows 10, Windows 11, Linux |
Q1/2021 | Release date | Q1/2021 |
4995 $ | Release price | 513 $ |
show more data | show more data | |
AMD EPYC 7643
48C 96T @ 3.60 GHz |
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Intel Core i9-11900KF
8C 16T @ 5.30 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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Intel Core i9-11900KF
8C 16T @ 4.80 GHz |
AMD EPYC 7643
48C 96T @ 3.60 GHz |
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Intel Core i9-11900KF
8C 16T @ 5.30 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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Intel Core i9-11900KF
8C 16T @ 4.80 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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Intel Core i9-11900KF
8C 16T @ 4.80 GHz |
AMD EPYC 7643
48C 96T @ 3.60 GHz |
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Intel Core i9-11900KF
8C 16T @ 5.30 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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Intel Core i9-11900KF
8C 16T @ 4.80 GHz |
AMD EPYC 7643
48C 96T @ 3.60 GHz |
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Intel Core i9-11900KF
8C 16T @ 5.30 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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Intel Core i9-11900KF
8C 16T @ 4.80 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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Intel Core i9-11900KF
8C 16T @ 4.80 GHz |
AMD EPYC 7643
48C 96T @ 2.30 GHz |
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Intel Core i9-11900KF
8C 16T @ 3.50 GHz |
AMD EPYC 7643
48C 96T @ 3.60 GHz |
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Intel Core i9-11900KF
8C 16T @ 5.30 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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Intel Core i9-11900KF
8C 16T @ 4.80 GHz |
Devices using this processor |
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AMD EPYC 7643 | Intel Core i9-11900KF |
Unknown | Unknown |