AMD EPYC 7643 | AMD Phenom II X3 B73 | |
CPU comparisonAMD EPYC 7643 or AMD Phenom II X3 B73 - 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 7643 has 48 cores with 96 threads and clocks with a maximum frequency of 3.60 GHz. Up to 4096 GB of memory is supported in 8 memory channels. The AMD EPYC 7643 was released in Q1/2021. The AMD Phenom II X3 B73 has 3 cores with 3 threads and clocks with a maximum frequency of 2.80 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD Phenom II X3 B73 was released in Q3/2009. |
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AMD EPYC (129) | Family | AMD Phenom II (52) |
AMD EPYC 7003 (29) | CPU group | AMD Phenom II - 700 (9) |
3 | Generation | 3 |
Milan (Zen 3) | Architecture | Heka (K10) |
Desktop / Server | Segment | Desktop / Server |
AMD EPYC 7642 | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD EPYC 7643 has 48 CPU cores and can calculate 96 threads in parallel. The clock frequency of the AMD EPYC 7643 is 2.30 GHz (3.60 GHz) while the AMD Phenom II X3 B73 has 3 CPU cores and 3 threads can calculate simultaneously. The clock frequency of the AMD Phenom II X3 B73 is at 2.80 GHz. |
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AMD EPYC 7643 | Characteristic | AMD Phenom II X3 B73 |
48 | Cores | 3 |
96 | Threads | 3 |
normal | Core architecture | normal |
Yes | Hyperthreading | No |
No | Overclocking ? | Yes |
2.30 GHz | Frequency | 2.80 GHz |
3.60 GHz | Turbo Frequency (1 Core) | -- |
3.40 GHz | Turbo Frequency (All Cores) | -- |
Memory & PCIeThe AMD EPYC 7643 can use up to 4096 GB of memory in 8 memory channels. The maximum memory bandwidth is 204.8 GB/s. The AMD Phenom II X3 B73 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s. |
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AMD EPYC 7643 | Characteristic | AMD Phenom II X3 B73 |
DDR4-3200 | Memory | DDR3-1333, DDR2-1066 |
4096 GB | Max. Memory | |
8 (Octa Channel) | Memory channels | 2 (Dual Channel) |
204.8 GB/s | Max. Bandwidth | 21.3 GB/s |
Yes | ECC | No |
-- | L2 Cache | -- |
256.00 MB | L3 Cache | 6.00 MB |
4.0 | PCIe version | -- |
128 | PCIe lanes | -- |
252.0 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 7643 is 240 W, while the AMD Phenom II X3 B73 has a TDP of 95 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD EPYC 7643 | Characteristic | AMD Phenom II X3 B73 |
240 W | TDP (PL1 / PBP) | 95 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
225 W | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD EPYC 7643 is manufactured in 7 nm and has 256.00 MB cache. The AMD Phenom II X3 B73 is manufactured in 45 nm and has a 6.00 MB cache. |
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AMD EPYC 7643 | Characteristic | AMD Phenom II X3 B73 |
7 nm | Technology | 45 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, SSE4a |
SP3 | Socket | AM3 |
AMD-V, SVM | Virtualization | AMD-V |
Yes | AES-NI | No |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q1/2021 | Release date | Q3/2009 |
4995 $ | Release price | -- |
show more data | show more data | |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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AMD Phenom II X3 B73
3C 3T @ 2.80 GHz |
AMD EPYC 7643
48C 96T @ 3.60 GHz |
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AMD Phenom II X3 B73
3C 3T @ 2.80 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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AMD Phenom II X3 B73
3C 3T @ 2.80 GHz |
AMD EPYC 7643
48C 96T @ 3.60 GHz |
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AMD Phenom II X3 B73
3C 3T @ 2.80 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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AMD Phenom II X3 B73
3C 3T @ 2.80 GHz |
AMD EPYC 7643
48C 96T @ 3.60 GHz |
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AMD Phenom II X3 B73
3C 3T @ 2.80 GHz |
AMD EPYC 7643
48C 96T @ 3.40 GHz |
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AMD Phenom II X3 B73
3C 3T @ 2.80 GHz |
Devices using this processor |
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AMD EPYC 7643 | AMD Phenom II X3 B73 |
Unknown | Unknown |