AMD Phenom II X4 B95 | AMD EPYC 7551 | |
CPU comparisonAMD Phenom II X4 B95 or AMD EPYC 7551 - 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 Phenom II X4 B95 has 4 cores with 4 threads and clocks with a maximum frequency of 3.00 GHz. Up to GB of memory is supported in 2 memory channels. The AMD Phenom II X4 B95 was released in Q3/2009. The AMD EPYC 7551 has 32 cores with 64 threads and clocks with a maximum frequency of 3.00 GHz. The CPU supports up to GB of memory in 8 memory channels. The AMD EPYC 7551 was released in Q3/2017. |
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AMD Phenom II (52) | Family | AMD EPYC (129) |
AMD Phenom II - 800/900 (23) | CPU group | AMD EPYC 7001 (12) |
4 | Generation | 1 |
Deneb (K10) | Architecture | Naples (Zen) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | AMD EPYC 7552 |
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CPU Cores and Base FrequencyThe AMD Phenom II X4 B95 is a 4 core processor with a clock frequency of 3.00 GHz. The AMD EPYC 7551 has 32 CPU cores with a clock frequency of 2.00 GHz (3.00 GHz). |
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AMD Phenom II X4 B95 | Characteristic | AMD EPYC 7551 |
4 | Cores | 32 |
4 | Threads | 64 |
normal | Core architecture | normal |
No | Hyperthreading | Yes |
Yes | Overclocking ? | No |
3.00 GHz | Frequency | 2.00 GHz |
-- | Turbo Frequency (1 Core) | 3.00 GHz |
-- | Turbo Frequency (All Cores) | 2.55 GHz |
Memory & PCIeThe AMD Phenom II X4 B95 supports a maximum of GB of memory in 2 memory channels. The AMD EPYC 7551 can connect up to GB of memory in 8 memory channels. |
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AMD Phenom II X4 B95 | Characteristic | AMD EPYC 7551 |
DDR3-1333, DDR2-1066 | Memory | DDR4-2666 |
Max. Memory | ||
2 (Dual Channel) | Memory channels | 8 (Octa Channel) |
21.3 GB/s | Max. Bandwidth | 170.6 GB/s |
No | ECC | Yes |
-- | L2 Cache | -- |
6.00 MB | L3 Cache | 64.00 MB |
-- | PCIe version | 3.0 |
-- | PCIe lanes | 128 |
-- | PCIe Bandwidth | 126.1 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Phenom II X4 B95 has a TDP of 95 W, that of the AMD EPYC 7551 is 180 W. |
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AMD Phenom II X4 B95 | Characteristic | AMD EPYC 7551 |
95 W | TDP (PL1 / PBP) | 180 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD Phenom II X4 B95 has a 6.00 MB cache, while the AMD EPYC 7551 cache has a total of 64.00 MB. |
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AMD Phenom II X4 B95 | Characteristic | AMD EPYC 7551 |
45 nm | Technology | 14 nm |
Unknown | Chip design | Chiplet |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE3, SSE4a | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
AM3 | Socket | SP3 |
AMD-V | Virtualization | AMD-V, SVM |
No | AES-NI | Yes |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q3/2009 | Release date | Q3/2017 |
-- | Release price | 3200 $ |
show more data | show more data | |
AMD Phenom II X4 B95
4C 4T @ 3.00 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
AMD Phenom II X4 B95
4C 4T @ 3.00 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
AMD Phenom II X4 B95
4C 4T @ 3.00 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
AMD Phenom II X4 B95
4C 4T @ 3.00 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
AMD Phenom II X4 B95
4C 4T @ 3.00 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
Devices using this processor |
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AMD Phenom II X4 B95 | AMD EPYC 7551 |
Unknown | Unknown |