Ryzen Threadripper PRO 3975WX vs Phenom II X3 P820
Aggregate performance score
Ryzen Threadripper PRO 3975WX outperforms Phenom II X3 P820 by a whopping 5837% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3086 | 124 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Series | 3x AMD Phenom II | AMD Ryzen Threadripper |
| Power efficiency | 1.01 | 5.37 |
| Designer | AMD | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | Champlain (2010−2011) | Matisse (2019−2020) |
| Release date | 12 May 2010 (15 years ago) | 14 July 2020 (5 years ago) |
Detailed specifications
Phenom II X3 P820 and Ryzen Threadripper PRO 3975WX 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 | 3 (Tri-Core) | 32 (Dotriaconta-Core) |
| Threads | 3 | 64 |
| Base clock speed | no data | 3.5 GHz |
| Boost clock speed | 1.8 GHz | 4.2 GHz |
| Bus rate | 3600 MHz | no data |
| Multiplier | no data | 35 |
| L1 cache | 384 KB | 2 MB |
| L2 cache | 1.5 MB | 16 MB |
| L3 cache | no data | 128 MB |
| Chip lithography | 45 nm | 7 nm, 12 nm |
| Die size | no data | 74 mm2 |
| Maximum core temperature | no data | 95 °C |
| Maximum case temperature (TCase) | no data | 95 °C |
| Number of transistors | no data | 23540 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Phenom II X3 P820 and Ryzen Threadripper PRO 3975WX 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 | sWRX8 |
| Power consumption (TDP) | 25 Watt | 280 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X3 P820 and Ryzen Threadripper PRO 3975WX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Virtualization, AMD64, Advanced Virus Protection, SSE(1,2,3,4a) | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AES, AVX, AVX2, BMI1, BMI2, SHA, F16C, FMA3, AMD64, EVP, AMD-V, SMAP, SMEP, SMT, Precision Boost 2, XFR 2 |
| AES-NI | - | + |
| AVX | - | + |
| VirusProtect | + | - |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X3 P820 and Ryzen Threadripper PRO 3975WX are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X3 P820 and Ryzen Threadripper PRO 3975WX. 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 X3 P820 and Ryzen Threadripper PRO 3975WX.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 128 |
Synthetic benchmarks
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.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
Pros & cons summary
| Performance score | 0.60 | 35.62 |
| Recency | 12 May 2010 | 14 July 2020 |
| Physical cores | 3 | 32 |
| Threads | 3 | 64 |
| Chip lithography | 45 nm | 7 nm |
| Power consumption (TDP) | 25 Watt | 280 Watt |
Phenom II X3 P820 has 1020% lower power consumption.
Ryzen Threadripper PRO 3975WX, on the other hand, has a 5837% higher aggregate performance score, an age advantage of 10 years, 967% more physical cores and 2033% more threads, and a 543% more advanced lithography process.
The AMD Ryzen Threadripper PRO 3975WX is our recommended choice as it beats the AMD Phenom II X3 P820 in performance tests.
Be aware that Phenom II X3 P820 is a notebook processor while Ryzen Threadripper PRO 3975WX is a server/workstation one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
