Ryzen Threadripper PRO 3975WX vs Phenom II X3 P820
Aggregate performance score
Ryzen Threadripper PRO 3975WX outperforms Phenom II X3 P820 by a whopping 5890% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X3 P820 and Ryzen Threadripper PRO 3975WX processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2630 | 55 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 18.29 |
| Market segment | Laptop | Desktop processor |
| Series | 3x AMD Phenom II | AMD Ryzen Threadripper |
| Architecture codename | Champlain (2010−2011) | Matisse (2019−2020) |
| Release date | 12 May 2010 (14 years ago) | 14 July 2020 (3 years ago) |
| Current price | no data | $2200 |
Cost-effectiveness evaluation
Performance per price, higher is better.
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 support | 3600 MHz | no data |
| L1 cache | 384 KB | 64K (per core) |
| L2 cache | 1.5 MB | 512K (per core) |
| L3 cache | no data | 128 MB |
| Chip lithography | 45 nm | 7 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 | 3,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | No | Yes |
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 | integrated DDR3 Memory Controller, 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 | no data | + |
| AVX | no data | + |
| VirusProtect | + | 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 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.
Ryzen Threadripper PRO 3975WX outperforms Phenom II X3 P820 by 5890% based on our aggregate benchmark results.
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.
Benchmark coverage: 20%
Ryzen Threadripper PRO 3975WX outperforms Phenom II X3 P820 by 277% in Cinebench 10 32-bit single-core.
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.
Benchmark coverage: 19%
Ryzen Threadripper PRO 3975WX outperforms Phenom II X3 P820 by 1193% in Cinebench 10 32-bit multi-core.
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.
Benchmark coverage: 19%
Ryzen Threadripper PRO 3975WX outperforms Phenom II X3 P820 by 728% in 3DMark06 CPU.
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.
Benchmark coverage: 17%
Ryzen Threadripper PRO 3975WX outperforms Phenom II X3 P820 by 3290% in Cinebench 11.5 64-bit multi-core.
Pros & cons summary
| Performance score | 0.68 | 40.73 |
| 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 |
The Ryzen Threadripper PRO 3975WX is our recommended choice as it beats the 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 desktop one.
Should you still have questions on choice between Phenom II X3 P820 and Ryzen Threadripper PRO 3975WX, ask them in Comments section, and we shall answer.
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