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AMD Ryzen 9 3900X | Intel Core i9-9900KF | |
CPU comparisonIn this CPU comparison, we compare the AMD Ryzen 9 3900X and the Intel Core i9-9900KF and use benchmarks to check which processor is faster.
We compare the AMD Ryzen 9 3900X 12 core processor released in Q3/2019 with the Intel Core i9-9900KF which has 8 CPU cores and was introduced in Q1/2019. |
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AMD Ryzen 9 (47) | Family | Intel Core i9 (81) |
AMD Ryzen 3000 (15) | CPU group | Intel Core i 9000 (34) |
3 | Generation | 9 |
Matisse (Zen 2) | Architecture | Coffee Lake S Refresh |
Desktop | Segment | Desktop |
-- | Predecessor | -- |
AMD Ryzen 9 5900X | Successor | Intel Core i9-10900KF |
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CPU Cores and Base FrequencyThe AMD Ryzen 9 3900X is a 12 core processor with a clock frequency of 3.80 GHz (4.60 GHz). The processor can compute 24 threads at the same time. The Intel Core i9-9900KF clocks with 3.60 GHz (5.00 GHz), has 8 CPU cores and can calculate 16 threads in parallel. |
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AMD Ryzen 9 3900X | Characteristic | Intel Core i9-9900KF |
12 | Cores | 8 |
24 | Threads | 16 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
Yes | Overclocking ? | Yes |
3.80 GHz | Frequency | 3.60 GHz |
4.60 GHz | Turbo Frequency (1 Core) | 5.00 GHz |
4.00 GHz | Turbo Frequency (All Cores) | 4.70 GHz |
Memory & PCIeUp to 128 GB of memory in a maximum of 2 memory channels is supported by the AMD Ryzen 9 3900X, while the Intel Core i9-9900KF supports a maximum of 128 GB of memory with a maximum memory bandwidth of 42.7 GB/s enabled. |
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AMD Ryzen 9 3900X | Characteristic | Intel Core i9-9900KF |
DDR4-3200 | Memory | DDR4-2666 |
128 GB | Max. Memory | 128 GB |
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
51.2 GB/s | Max. Bandwidth | 42.7 GB/s |
Yes | ECC | No |
6.00 MB | L2 Cache | -- |
64.00 MB | L3 Cache | 16.00 MB |
4.0 | PCIe version | 3.0 |
20 | PCIe lanes | 16 |
39.4 GB/s | PCIe Bandwidth | 15.8 GB/s |
Thermal ManagementThe AMD Ryzen 9 3900X has a TDP of 105 W. The TDP of the Intel Core i9-9900KF is 95 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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AMD Ryzen 9 3900X | Characteristic | Intel Core i9-9900KF |
105 W | TDP (PL1 / PBP) | 95 W |
142 W | TDP (PL2) | 119 W @ 28 s |
-- | TDP up | -- |
-- | TDP down | -- |
95 °C | Tjunction max. | 100 °C |
Technical detailsThe AMD Ryzen 9 3900X has 70.00 MB cache and is manufactured in 7 nm. The cache of Intel Core i9-9900KF is at 16.00 MB. The processor is manufactured in 14 nm. |
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AMD Ryzen 9 3900X | Characteristic | Intel Core i9-9900KF |
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 |
AM4 (PGA 1331) | Socket | LGA 1151-2 |
AMD-V, SVM | Virtualization | VT-x, VT-x EPT, VT-d |
Yes | AES-NI | Yes |
Windows 10, Windows 11, Linux | Operating systems | Windows 10, Windows 11, Linux |
Q3/2019 | Release date | Q1/2019 |
499 $ | Release price | 600 $ |
show more data | show more data | |
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AMD Ryzen 9 3900X
Geekbench 6 MT: 10,689 / 499 $ |
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Intel Core i9-9900KF
Geekbench 6 MT: 8,182 / 600 $ |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Intel Core i9-9900KF
8C 16T @ 5.00 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Intel Core i9-9900KF
8C 16T @ 5.00 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Intel Core i9-9900KF
8C 16T @ 5.00 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Intel Core i9-9900KF
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Intel Core i9-9900KF
8C 16T @ 5.00 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Intel Core i9-9900KF
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Intel Core i9-9900KF
8C 16T @ 5.00 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Intel Core i9-9900KF
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Intel Core i9-9900KF
8C 16T @ 5.00 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Intel Core i9-9900KF
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Intel Core i9-9900KF
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Intel Core i9-9900KF
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Intel Core i9-9900KF
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Intel Core i9-9900KF
8C 16T @ 5.00 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 3.80 GHz |
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Intel Core i9-9900KF
8C 16T @ 3.60 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Intel Core i9-9900KF
8C 16T @ 5.00 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Intel Core i9-9900KF
8C 16T @ 4.70 GHz |
Devices using this processor |
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AMD Ryzen 9 3900X | Intel Core i9-9900KF |
Unknown | Unknown |