AMD Ryzen Threadripper PRO 3975WX | AMD Phenom II X2 B55 | |
CPU comparisonAMD Ryzen Threadripper PRO 3975WX or AMD Phenom II X2 B55 - 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 Ryzen Threadripper PRO 3975WX has 32 cores with 64 threads and clocks with a maximum frequency of 4.20 GHz. Up to 2048 GB of memory is supported in 8 memory channels. The AMD Ryzen Threadripper PRO 3975WX was released in Q3/2020. The AMD Phenom II X2 B55 has 2 cores with 2 threads and clocks with a maximum frequency of 3.00 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD Phenom II X2 B55 was released in Q4/2009. |
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AMD Ryzen Threadripper PRO (15) | Family | AMD Phenom II (52) |
AMD Ryzen Threadripper PRO 3000 (4) | CPU group | AMD Phenom II - 545 (9) |
3 | Generation | 2 |
Castle Peak (Zen 2) | Architecture | Callisto (K10) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
AMD Ryzen Threadripper PRO 5975WX | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen Threadripper PRO 3975WX is a 32 core processor with a clock frequency of 3.50 GHz (4.20 GHz). The AMD Phenom II X2 B55 has 2 CPU cores with a clock frequency of 3.00 GHz. |
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AMD Ryzen Threadripper PRO 3975WX | Characteristic | AMD Phenom II X2 B55 |
32 | Cores | 2 |
64 | Threads | 2 |
normal | Core architecture | normal |
Yes | Hyperthreading | No |
Yes | Overclocking ? | Yes |
3.50 GHz | Frequency | 3.00 GHz |
4.20 GHz | Turbo Frequency (1 Core) | -- |
3.75 GHz | Turbo Frequency (All Cores) | -- |
Memory & PCIeThe AMD Ryzen Threadripper PRO 3975WX supports a maximum of 2048 GB of memory in 8 memory channels. The AMD Phenom II X2 B55 can connect up to GB of memory in 2 memory channels. |
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AMD Ryzen Threadripper PRO 3975WX | Characteristic | AMD Phenom II X2 B55 |
DDR4-3200 | Memory | DDR3-1333, DDR2-1066 |
2048 GB | Max. Memory | |
8 (Octa Channel) | Memory channels | 2 (Dual Channel) |
51.2 GB/s | Max. Bandwidth | 21.3 GB/s |
Yes | ECC | No |
16.00 MB | L2 Cache | -- |
128.00 MB | L3 Cache | 6.00 MB |
4.0 | PCIe version | -- |
128 | PCIe lanes | -- |
252.0 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Ryzen Threadripper PRO 3975WX has a TDP of 280 W, that of the AMD Phenom II X2 B55 is 80 W. |
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AMD Ryzen Threadripper PRO 3975WX | Characteristic | AMD Phenom II X2 B55 |
280 W | TDP (PL1 / PBP) | 80 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
95 °C | Tjunction max. | -- |
Technical detailsThe AMD Ryzen Threadripper PRO 3975WX has a 144.00 MB cache, while the AMD Phenom II X2 B55 cache has a total of 6.00 MB. |
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AMD Ryzen Threadripper PRO 3975WX | Characteristic | AMD Phenom II X2 B55 |
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 |
WRX8 (sWRX8) | Socket | AM3 |
AMD-V, SVM | Virtualization | AMD-V |
Yes | AES-NI | No |
Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
Q3/2020 | Release date | Q4/2009 |
2749 $ | Release price | -- |
show more data | show more data | |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 4.20 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.75 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
AMD Ryzen Threadripper PRO 3975WX
32C 64T @ 3.50 GHz |
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AMD Phenom II X2 B55
2C 2T @ 3.00 GHz |
Devices using this processor |
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AMD Ryzen Threadripper PRO 3975WX | AMD Phenom II X2 B55 |
Unknown | Unknown |