Intel Xeon D-1521 vs Intel Atom C3338R
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CPU comparison with benchmarks
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| Intel Xeon D-1521 | Intel Atom C3338R | |
CPU comparisonIntel Xeon D-1521 or Intel Atom C3338R - 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 Intel Xeon D-1521 has 4 cores with 8 threads and clocks with a maximum frequency of 2.70 GHz. Up to 128 GB of memory is supported in 2 memory channels. The Intel Xeon D-1521 was released in Q4/2015. The Intel Atom C3338R has 2 cores with 2 threads and clocks with a maximum frequency of 2.20 GHz. The CPU supports up to 128 GB of memory in 1 memory channels. The Intel Atom C3338R was released in Q2/2020. |
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| Intel Xeon D (79) | Family | Intel Atom (108) |
| Intel Xeon D-1500 (22) | CPU group | Intel Atom C3000 (20) |
| 1 | Generation | 5 |
| Broadwell | Architecture | Denverton |
| Desktop / Server | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Xeon D-1521 is a 4 core processor with a clock frequency of 2.40 GHz (2.70 GHz). The Intel Atom C3338R has 2 CPU cores with a clock frequency of 1.80 GHz (2.20 GHz). |
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| Intel Xeon D-1521 | Characteristic | Intel Atom C3338R |
| 4 | Cores | 2 |
| 8 | Threads | 2 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| No | Overclocking ? | No |
| 2.40 GHz | Frequency | 1.80 GHz |
| 2.70 GHz | Turbo Frequency (1 Core) | 2.20 GHz |
| 2.40 GHz | Turbo Frequency (All Cores) | 2.00 GHz |
Memory & PCIeThe Intel Xeon D-1521 supports a maximum of 128 GB of memory in 2 memory channels. The Intel Atom C3338R can connect up to 128 GB of memory in 1 memory channels. |
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| Intel Xeon D-1521 | Characteristic | Intel Atom C3338R |
| DDR4-2133 | Memory | DDR4-1866 |
| 128 GB | Max. Memory | 128 GB |
| 2 (Dual Channel) | Memory channels | 1 (Single Channel) |
| 34.1 GB/s | Max. Bandwidth | 29.9 GB/s |
| Yes | ECC | Yes |
| 6.00 MB | L2 Cache | 4.00 MB |
| -- | L3 Cache | -- |
| 3.0 | PCIe version | 3.0 |
| 32 | PCIe lanes | 10 |
| 31.5 GB/s | PCIe Bandwidth | 9.9 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Xeon D-1521 has a TDP of 45 W, that of the Intel Atom C3338R is 10.5 W. |
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| Intel Xeon D-1521 | Characteristic | Intel Atom C3338R |
| 45 W | TDP (PL1 / PBP) | 10.5 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | 100 °C |
Technical detailsThe Intel Xeon D-1521 has a 6.00 MB cache, while the Intel Atom C3338R cache has a total of 4.00 MB. |
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| Intel Xeon D-1521 | Characteristic | Intel Atom C3338R |
| 14 nm | Technology | 14 nm |
| Monolithic | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4.1, SSE4.2, AVX2 | ISA extensions | SSE4.1, SSE4.2 |
| BGA 1667 | Socket | BGA 1310 |
| VT-x, VT-x EPT, VT-d | Virtualization | VT-x, VT-x EPT, VT-d |
| Yes | AES-NI | Yes |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q4/2015 | Release date | Q2/2020 |
| 216 $ | Release price | 37 $ |
| show more data | show more data | |
4C 8T @ 2.40 GHz (2.70 GHz) buy now on Amazon and save!
2C 2T @ 1.80 GHz (2.20 GHz) buy now on Amazon and save!
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Rate these processors
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Xeon D-1521
4C 8T @ 2.70 GHz |
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Intel Atom C3338R
2C 2T @ 2.20 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Xeon D-1521
4C 8T @ 2.40 GHz |
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Intel Atom C3338R
2C 2T @ 2.00 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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Intel Xeon D-1521
4C 8T @ 2.70 GHz |
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Intel Atom C3338R
2C 2T @ 2.20 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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Intel Xeon D-1521
4C 8T @ 2.40 GHz |
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Intel Atom C3338R
2C 2T @ 2.00 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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Intel Xeon D-1521
4C 8T @ 2.40 GHz |
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Intel Atom C3338R
2C 2T @ 2.00 GHz |
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Devices using this processor |
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| Intel Xeon D-1521 | Intel Atom C3338R |
| Unknown | Unknown |
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