AMD Phenom II X3 B77 | AMD Ryzen Threadripper PRO 3945WX | |
CPU comparisonAMD Phenom II X3 B77 or AMD Ryzen Threadripper PRO 3945WX - 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 X3 B77 has 3 cores with 3 threads and clocks with a maximum frequency of 3.20 GHz. Up to GB of memory is supported in 2 memory channels. The AMD Phenom II X3 B77 was released in Q2/2010. The AMD Ryzen Threadripper PRO 3945WX has 12 cores with 24 threads and clocks with a maximum frequency of 4.30 GHz. The CPU supports up to 2048 GB of memory in 8 memory channels. The AMD Ryzen Threadripper PRO 3945WX was released in Q1/2021. |
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AMD Phenom II (52) | Family | AMD Ryzen Threadripper PRO (15) |
AMD Phenom II - 700 (9) | CPU group | AMD Ryzen Threadripper PRO 3000 (4) |
3 | Generation | 3 |
Heka (K10) | Architecture | Castle Peak (Zen 2) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | AMD Ryzen Threadripper PRO 5945WX |
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CPU Cores and Base FrequencyThe AMD Phenom II X3 B77 is a 3 core processor with a clock frequency of 3.20 GHz. The AMD Ryzen Threadripper PRO 3945WX has 12 CPU cores with a clock frequency of 4.00 GHz (4.30 GHz). |
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AMD Phenom II X3 B77 | Characteristic | AMD Ryzen Threadripper PRO 3945WX |
3 | Cores | 12 |
3 | Threads | 24 |
normal | Core architecture | normal |
No | Hyperthreading | Yes |
Yes | Overclocking ? | Yes |
3.20 GHz | Frequency | 4.00 GHz |
-- | Turbo Frequency (1 Core) | 4.30 GHz |
-- | Turbo Frequency (All Cores) | 4.20 GHz |
Memory & PCIeThe AMD Phenom II X3 B77 supports a maximum of GB of memory in 2 memory channels. The AMD Ryzen Threadripper PRO 3945WX can connect up to 2048 GB of memory in 8 memory channels. |
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AMD Phenom II X3 B77 | Characteristic | AMD Ryzen Threadripper PRO 3945WX |
DDR3-1333, DDR2-1066 | Memory | DDR4-3200 |
Max. Memory | 2048 GB | |
2 (Dual Channel) | Memory channels | 8 (Octa Channel) |
21.3 GB/s | Max. Bandwidth | 51.2 GB/s |
No | ECC | Yes |
-- | L2 Cache | 6.00 MB |
6.00 MB | L3 Cache | 64.00 MB |
-- | PCIe version | 4.0 |
-- | PCIe lanes | 128 |
-- | PCIe Bandwidth | 252.0 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Phenom II X3 B77 has a TDP of 95 W, that of the AMD Ryzen Threadripper PRO 3945WX is 280 W. |
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AMD Phenom II X3 B77 | Characteristic | AMD Ryzen Threadripper PRO 3945WX |
95 W | TDP (PL1 / PBP) | 280 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | 95 °C |
Technical detailsThe AMD Phenom II X3 B77 has a 6.00 MB cache, while the AMD Ryzen Threadripper PRO 3945WX cache has a total of 70.00 MB. |
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AMD Phenom II X3 B77 | Characteristic | AMD Ryzen Threadripper PRO 3945WX |
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 |
AM3 | Socket | WRX8 (sWRX8) |
AMD-V | Virtualization | AMD-V, SVM |
No | AES-NI | Yes |
Windows 10, Linux | Operating systems | Windows 10, Windows 11, Linux |
Q2/2010 | Release date | Q1/2021 |
-- | Release price | -- |
show more data | show more data | |
AMD Phenom II X3 B77
3C 3T @ 3.20 GHz |
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AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.20 GHz |
AMD Phenom II X3 B77
3C 3T @ 3.20 GHz |
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AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.30 GHz |
AMD Phenom II X3 B77
3C 3T @ 3.20 GHz |
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AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.20 GHz |
AMD Phenom II X3 B77
3C 3T @ 3.20 GHz |
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AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.30 GHz |
AMD Phenom II X3 B77
3C 3T @ 3.20 GHz |
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AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.20 GHz |
AMD Phenom II X3 B77
3C 3T @ 3.20 GHz |
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AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.30 GHz |
AMD Phenom II X3 B77
3C 3T @ 3.20 GHz |
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AMD Ryzen Threadripper PRO 3945WX
12C 24T @ 4.20 GHz |
Devices using this processor |
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AMD Phenom II X3 B77 | AMD Ryzen Threadripper PRO 3945WX |
Unknown | Unknown |