AMD EPYC 7251 | Intel Core i7-7800X | |
CPU comparisonAMD EPYC 7251 or Intel Core i7-7800X - 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 7251 has 8 cores with 16 threads and clocks with a maximum frequency of 2.90 GHz. Up to GB of memory is supported in 8 memory channels. The AMD EPYC 7251 was released in Q3/2017. The Intel Core i7-7800X has 6 cores with 12 threads and clocks with a maximum frequency of 4.20 GHz. The CPU supports up to 128 GB of memory in 4 memory channels. The Intel Core i7-7800X was released in Q2/2017. |
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AMD EPYC (129) | Family | Intel Core i7 (298) |
AMD EPYC 7001 (12) | CPU group | Intel Core i 7000X (9) |
1 | Generation | 7 |
Naples (Zen) | Architecture | Skylake X |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD EPYC 7251 has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the AMD EPYC 7251 is 2.10 GHz (2.90 GHz) while the Intel Core i7-7800X has 6 CPU cores and 12 threads can calculate simultaneously. The clock frequency of the Intel Core i7-7800X is at 3.50 GHz (4.20 GHz). |
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AMD EPYC 7251 | Characteristic | Intel Core i7-7800X |
8 | Cores | 6 |
16 | Threads | 12 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | Yes |
2.10 GHz | Frequency | 3.50 GHz |
2.90 GHz | Turbo Frequency (1 Core) | 4.20 GHz |
2.90 GHz | Turbo Frequency (All Cores) | 3.90 GHz |
Memory & PCIeThe AMD EPYC 7251 can use up to GB of memory in 8 memory channels. The maximum memory bandwidth is 153.6 GB/s. The Intel Core i7-7800X supports up to 128 GB of memory in 4 memory channels and achieves a memory bandwidth of up to 76.8 GB/s. |
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AMD EPYC 7251 | Characteristic | Intel Core i7-7800X |
DDR4-2666 | Memory | DDR4-2400 |
Max. Memory | 128 GB | |
8 (Octa Channel) | Memory channels | 4 (Quad Channel) |
153.6 GB/s | Max. Bandwidth | 76.8 GB/s |
Yes | ECC | No |
-- | L2 Cache | -- |
32.00 MB | L3 Cache | 8.00 MB |
3.0 | PCIe version | 3.0 |
128 | PCIe lanes | 28 |
126.1 GB/s | PCIe Bandwidth | 27.6 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 7251 is 120 W, while the Intel Core i7-7800X has a TDP of 140 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD EPYC 7251 | Characteristic | Intel Core i7-7800X |
120 W | TDP (PL1 / PBP) | 140 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD EPYC 7251 is manufactured in 14 nm and has 32.00 MB cache. The Intel Core i7-7800X is manufactured in 14 nm and has a 8.00 MB cache. |
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AMD EPYC 7251 | Characteristic | Intel Core i7-7800X |
14 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 2066 |
AMD-V, SVM | Virtualization | VT-x, VT-x EPT, VT-d |
Yes | AES-NI | Yes |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q3/2017 | Release date | Q2/2017 |
450 $ | Release price | 485 $ |
show more data | show more data | |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 4.20 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 3.90 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 3.90 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 4.20 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 3.90 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 4.20 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 3.90 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 4.20 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Intel Core i7-7800X
6C 12T @ 3.90 GHz |
AMD EPYC 7251
8C 16T @ 2.10 GHz |
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Intel Core i7-7800X
6C 12T @ 3.50 GHz |
Devices using this processor |
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AMD EPYC 7251 | Intel Core i7-7800X |
Unknown | Unknown |