Ryzen Threadripper PRO 3945WX vs Phenom II X4 P920
Aggregate performance score
Ryzen Threadripper PRO 3945WX outperforms Phenom II X4 P920 by a whopping 2385% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X4 P920 and Ryzen Threadripper PRO 3945WX processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2563 | 257 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Series | 4x AMD Phenom II | AMD Ryzen Threadripper |
| Power efficiency | 3.22 | 7.14 |
| Architecture codename | Champlain (2010−2011) | Matisse (2019−2020) |
| Release date | 12 May 2010 (14 years ago) | 14 July 2020 (4 years ago) |
Detailed specifications
Phenom II X4 P920 and Ryzen Threadripper PRO 3945WX basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 12 (Dodeca-Core) |
| Threads | 4 | 24 |
| Base clock speed | no data | 4 GHz |
| Boost clock speed | 1.6 GHz | 4.3 GHz |
| Bus rate | 3600 MHz | no data |
| Multiplier | no data | 40 |
| L1 cache | 512 KB | 64K (per core) |
| L2 cache | 2 MB | 512K (per core) |
| L3 cache | no data | 64 MB |
| Chip lithography | 45 nm | 7 nm, 12 nm |
| Die size | no data | 74 mm2 |
| Maximum case temperature (TCase) | no data | 95 °C |
| Number of transistors | no data | 3,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Phenom II X4 P920 and Ryzen Threadripper PRO 3945WX compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | no data | 1 |
| Socket | S1 (S1g4) | TR4 |
| Power consumption (TDP) | 25 Watt | 280 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X4 P920 and Ryzen Threadripper PRO 3945WX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, 3DNow, SSE (1,2,3,4A), AMD64, Enhanced Virus Protection, Virtualization, HyperTransport 3.0 | no data |
| AES-NI | - | + |
| AVX | - | + |
| VirusProtect | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X4 P920 and Ryzen Threadripper PRO 3945WX are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 P920 and Ryzen Threadripper PRO 3945WX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4-3200 |
| Maximum memory size | no data | 2 TiB |
| Maximum memory bandwidth | no data | 204.8 GB/s |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 P920 and Ryzen Threadripper PRO 3945WX.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 128 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Pros & cons summary
| Performance score | 0.85 | 21.12 |
| Recency | 12 May 2010 | 14 July 2020 |
| Physical cores | 4 | 12 |
| Threads | 4 | 24 |
| Chip lithography | 45 nm | 7 nm |
| Power consumption (TDP) | 25 Watt | 280 Watt |
Phenom II X4 P920 has 1020% lower power consumption.
Ryzen Threadripper PRO 3945WX, on the other hand, has a 2384.7% higher aggregate performance score, an age advantage of 10 years, 200% more physical cores and 500% more threads, and a 542.9% more advanced lithography process.
The Ryzen Threadripper PRO 3945WX is our recommended choice as it beats the Phenom II X4 P920 in performance tests.
Be aware that Phenom II X4 P920 is a notebook processor while Ryzen Threadripper PRO 3945WX is a server/workstation one.
Should you still have questions on choice between Phenom II X4 P920 and Ryzen Threadripper PRO 3945WX, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
