AMD Ryzen 7 3800XT | AMD Athlon X4 845 | |
CPU comparisonAMD Ryzen 7 3800XT or AMD Athlon X4 845 - 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 7 3800XT has 8 cores with 16 threads and clocks with a maximum frequency of 4.70 GHz. Up to 128 GB of memory is supported in 2 memory channels. The AMD Ryzen 7 3800XT was released in Q2/2020. The AMD Athlon X4 845 has 4 cores with 4 threads and clocks with a maximum frequency of 3.80 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD Athlon X4 845 was released in Q1/2016. |
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AMD Ryzen 7 (68) | Family | AMD Athlon (29) |
AMD Ryzen 3000 (15) | CPU group | AMD Athlon X4 (Carizzo) (2) |
3 | Generation | 2 |
Matisse (Zen 2) | Architecture | Carizzo |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 7 3800XT has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the AMD Ryzen 7 3800XT is 4.20 GHz (4.70 GHz) while the AMD Athlon X4 845 has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the AMD Athlon X4 845 is at 3.50 GHz (3.80 GHz). |
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AMD Ryzen 7 3800XT | Characteristic | AMD Athlon X4 845 |
8 | Cores | 4 |
16 | Threads | 4 |
normal | Core architecture | normal |
Yes | Hyperthreading | No |
Yes | Overclocking ? | No |
4.20 GHz | Frequency | 3.50 GHz |
4.70 GHz | Turbo Frequency (1 Core) | 3.80 GHz |
4.50 GHz | Turbo Frequency (All Cores) | 3.80 GHz |
Memory & PCIeThe AMD Ryzen 7 3800XT can use up to 128 GB of memory in 2 memory channels. The maximum memory bandwidth is 51.2 GB/s. The AMD Athlon X4 845 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 34.2 GB/s. |
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AMD Ryzen 7 3800XT | Characteristic | AMD Athlon X4 845 |
DDR4-3200 | Memory | DDR3-2133 |
128 GB | Max. Memory | |
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
51.2 GB/s | Max. Bandwidth | 34.2 GB/s |
Yes | ECC | Yes |
-- | L2 Cache | -- |
32.00 MB | L3 Cache | 2.00 MB |
4.0 | PCIe version | 3.0 |
20 | PCIe lanes | 8 |
39.4 GB/s | PCIe Bandwidth | 7.9 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD Ryzen 7 3800XT is 105 W, while the AMD Athlon X4 845 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD Ryzen 7 3800XT | Characteristic | AMD Athlon X4 845 |
105 W | TDP (PL1 / PBP) | 65 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
95 °C | Tjunction max. | -- |
Technical detailsThe AMD Ryzen 7 3800XT is manufactured in 7 nm and has 32.00 MB cache. The AMD Athlon X4 845 is manufactured in 28 nm and has a 2.00 MB cache. |
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AMD Ryzen 7 3800XT | Characteristic | AMD Athlon X4 845 |
7 nm | Technology | 28 nm |
Chiplet | Chip design | Unknown |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | ISA extensions | SSE3 |
AM4 (PGA 1331) | Socket | FM2+ |
AMD-V, SVM | Virtualization | None |
Yes | AES-NI | No |
Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
Q2/2020 | Release date | Q1/2016 |
-- | Release price | 65 $ |
show more data | show more data | |
AMD Ryzen 7 3800XT
8C 16T @ 4.70 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.50 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.70 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.50 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.50 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.70 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.50 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.70 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.70 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.70 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.50 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.70 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.50 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.50 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Ryzen 7 3800XT
8C 16T @ 4.20 GHz |
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AMD Athlon X4 845
4C 4T @ 3.50 GHz |
Devices using this processor |
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AMD Ryzen 7 3800XT | AMD Athlon X4 845 |
Unknown | Unknown |