AMD Phenom II X4 940 | AMD EPYC 7643 | |
CPU comparisonAMD Phenom II X4 940 or AMD EPYC 7643 - 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 940 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 940 was released in Q1/2009. The AMD EPYC 7643 has 48 cores with 96 threads and clocks with a maximum frequency of 3.60 GHz. The CPU supports up to 4096 GB of memory in 8 memory channels. The AMD EPYC 7643 was released in Q1/2021. |
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AMD Phenom II (52) | Family | AMD EPYC (129) |
AMD Phenom II - 800/900 (23) | CPU group | AMD EPYC 7003 (29) |
4 | Generation | 3 |
Deneb (K10) | Architecture | Milan (Zen 3) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | AMD EPYC 7642 |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Phenom II X4 940 has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the AMD Phenom II X4 940 is 3.00 GHz while the AMD EPYC 7643 has 48 CPU cores and 96 threads can calculate simultaneously. The clock frequency of the AMD EPYC 7643 is at 2.30 GHz (3.60 GHz). |
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AMD Phenom II X4 940 | Characteristic | AMD EPYC 7643 |
4 | Cores | 48 |
4 | Threads | 96 |
normal | Core architecture | normal |
No | Hyperthreading | Yes |
Yes | Overclocking ? | No |
3.00 GHz | Frequency | 2.30 GHz |
-- | Turbo Frequency (1 Core) | 3.60 GHz |
-- | Turbo Frequency (All Cores) | 3.40 GHz |
Memory & PCIeThe AMD Phenom II X4 940 can use up to GB of memory in 2 memory channels. The maximum memory bandwidth is 21.3 GB/s. The AMD EPYC 7643 supports up to 4096 GB of memory in 8 memory channels and achieves a memory bandwidth of up to 204.8 GB/s. |
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AMD Phenom II X4 940 | Characteristic | AMD EPYC 7643 |
DDR3-1333, DDR2-1066 | Memory | DDR4-3200 |
Max. Memory | 4096 GB | |
2 (Dual Channel) | Memory channels | 8 (Octa Channel) |
21.3 GB/s | Max. Bandwidth | 204.8 GB/s |
No | ECC | Yes |
-- | L2 Cache | -- |
6.00 MB | L3 Cache | 256.00 MB |
-- | PCIe version | 4.0 |
-- | PCIe lanes | 128 |
-- | PCIe Bandwidth | 252.0 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD Phenom II X4 940 is 125 W, while the AMD EPYC 7643 has a TDP of 240 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD Phenom II X4 940 | Characteristic | AMD EPYC 7643 |
125 W | TDP (PL1 / PBP) | 240 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | 225 W |
-- | Tjunction max. | -- |
Technical detailsThe AMD Phenom II X4 940 is manufactured in 45 nm and has 6.00 MB cache. The AMD EPYC 7643 is manufactured in 7 nm and has a 256.00 MB cache. |
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AMD Phenom II X4 940 | Characteristic | AMD EPYC 7643 |
45 nm | Technology | 7 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 |
AM2+ | Socket | SP3 |
AMD-V | Virtualization | AMD-V, SVM |
No | AES-NI | Yes |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q1/2009 | Release date | Q1/2021 |
-- | Release price | 4995 $ |
show more data | show more data | |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
Devices using this processor |
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AMD Phenom II X4 940 | AMD EPYC 7643 |
Unknown | Unknown |