AMD EPYC 7402 | AMD Athlon II X4 638 | |
CPU comparisonAMD EPYC 7402 or AMD Athlon II X4 638 - 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 7402 has 24 cores with 48 threads and clocks with a maximum frequency of 3.35 GHz. Up to GB of memory is supported in 8 memory channels. The AMD EPYC 7402 was released in Q3/2019. The AMD Athlon II X4 638 has 4 cores with 4 threads and clocks with a maximum frequency of 2.70 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The AMD Athlon II X4 638 was released in Q1/2012. |
||
AMD EPYC (129) | Family | AMD Athlon II (52) |
AMD EPYC 7002 (24) | CPU group | AMD Athlon II X4 (Llano) (5) |
2 | Generation | 2 |
Rome (Zen 2) | Architecture | Llano |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | -- |
|
||
CPU Cores and Base FrequencyThe AMD EPYC 7402 has 24 CPU cores and can calculate 48 threads in parallel. The clock frequency of the AMD EPYC 7402 is 2.80 GHz (3.35 GHz) while the AMD Athlon II X4 638 has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the AMD Athlon II X4 638 is at 2.70 GHz. |
||
AMD EPYC 7402 | Characteristic | AMD Athlon II X4 638 |
24 | Cores | 4 |
48 | Threads | 4 |
normal | Core architecture | normal |
Yes | Hyperthreading | No |
No | Overclocking ? | No |
2.80 GHz | Frequency | 2.70 GHz |
3.35 GHz | Turbo Frequency (1 Core) | -- |
3.20 GHz | Turbo Frequency (All Cores) | -- |
Memory & PCIeThe AMD EPYC 7402 can use up to GB of memory in 8 memory channels. The maximum memory bandwidth is 51.2 GB/s. The AMD Athlon II X4 638 supports up to 16 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s. |
||
AMD EPYC 7402 | Characteristic | AMD Athlon II X4 638 |
DDR4-3200 | Memory | DDR3-1333 |
Max. Memory | 16 GB | |
8 (Octa Channel) | Memory channels | 2 (Dual Channel) |
51.2 GB/s | Max. Bandwidth | 21.3 GB/s |
Yes | ECC | No |
-- | L2 Cache | 4.00 MB |
128.00 MB | L3 Cache | -- |
4.0 | PCIe version | 2.0 |
128 | PCIe lanes | -- |
252.0 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 7402 is 180 W, while the AMD Athlon II X4 638 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
||
AMD EPYC 7402 | Characteristic | AMD Athlon II X4 638 |
180 W | TDP (PL1 / PBP) | 65 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD EPYC 7402 is manufactured in 7 nm and has 128.00 MB cache. The AMD Athlon II X4 638 is manufactured in 32 nm and has a 4.00 MB cache. |
||
AMD EPYC 7402 | Characteristic | AMD Athlon II X4 638 |
7 nm | Technology | 32 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 | MMX, 3DNow!, SSE3, SSE4a |
SP3 | Socket | FM1 |
AMD-V, SVM | Virtualization | AMD-V |
Yes | AES-NI | No |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q3/2019 | Release date | Q1/2012 |
2900 $ | Release price | -- |
show more data | show more data | |
AMD EPYC 7402
24C 48T @ 3.35 GHz |
|||
AMD Athlon II X4 638
4C 4T @ 2.70 GHz |
AMD EPYC 7402
24C 48T @ 3.20 GHz |
|||
AMD Athlon II X4 638
4C 4T @ 2.70 GHz |
AMD EPYC 7402
24C 48T @ 3.20 GHz |
|||
AMD Athlon II X4 638
4C 4T @ 2.70 GHz |
AMD EPYC 7402
24C 48T @ 3.35 GHz |
|||
AMD Athlon II X4 638
4C 4T @ 2.70 GHz |
AMD EPYC 7402
24C 48T @ 3.20 GHz |
|||
AMD Athlon II X4 638
4C 4T @ 2.70 GHz |
AMD EPYC 7402
24C 48T @ 3.35 GHz |
|||
AMD Athlon II X4 638
4C 4T @ 2.70 GHz |
Devices using this processor |
|
AMD EPYC 7402 | AMD Athlon II X4 638 |
Unknown | Unknown |