Ryzen Threadripper PRO 3995WX vs Pentium D 820
Aggregate performance score
Ryzen Threadripper PRO 3995WX outperforms Pentium D 820 by a whopping 16757% 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 | 3384 | 57 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 6.82 |
| Market segment | Desktop processor | Server |
| Series | Pentium D | AMD Ryzen Threadripper |
| Power efficiency | no data | 18.07 |
| Designer | Intel | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | Smithfield (2005) | Matisse (2019−2020) |
| Release date | May 2005 (20 years ago) | 14 July 2020 (5 years ago) |
| Launch price (MSRP) | no data | $5,500 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Pentium D 820 and Ryzen Threadripper PRO 3995WX 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 | 2 (Dual-core) | 64 (Tetrahexaconta-Core) |
| Threads | 2 | 128 |
| Base clock speed | 2.8 GHz | 2.7 GHz |
| Boost clock speed | 2.8 GHz | 4.2 GHz |
| Bus rate | 800 MHz | no data |
| Multiplier | no data | 27 |
| L1 cache | 28 KB | 64K (per core) |
| L2 cache | 2 MB | 512K (per core) |
| L3 cache | 0 KB | 256 MB |
| Chip lithography | 90 nm | 7 nm, 12 nm |
| Die size | 206 mm2 | 74 mm2 |
| Maximum core temperature | 64 °C | 95 °C |
| Maximum case temperature (TCase) | no data | 95 °C |
| Number of transistors | 169 million | 3,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
| VID voltage range | 1.2V-1.4V | no data |
Compatibility
Information on Pentium D 820 and Ryzen Threadripper PRO 3995WX 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 | 2 | 1 |
| Socket | PLGA775 | sWRX8 |
| Power consumption (TDP) | 95 Watt | 280 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium D 820 and Ryzen Threadripper PRO 3995WX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | 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 | - | + |
| Enhanced SpeedStep (EIST) | - | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Demand Based Switching | - | no data |
| PAE | 32 Bit | no data |
| FSB parity | - | no data |
| Precision Boost 2 | no data | + |
Security technologies
Pentium D 820 and Ryzen Threadripper PRO 3995WX technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium D 820 and Ryzen Threadripper PRO 3995WX are enumerated here.
| AMD-V | - | + |
| VT-d | - | no data |
| VT-x | - | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Ryzen Threadripper PRO 3995WX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, 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 Pentium D 820 and Ryzen Threadripper PRO 3995WX.
| 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.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
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.
Pros & cons summary
| Performance score | 0.28 | 47.20 |
| Physical cores | 2 | 64 |
| Threads | 2 | 128 |
| Chip lithography | 90 nm | 7 nm |
| Power consumption (TDP) | 95 Watt | 280 Watt |
Pentium D 820 has 194.7% lower power consumption.
Ryzen Threadripper PRO 3995WX, on the other hand, has a 16757.1% higher aggregate performance score, 3100% more physical cores and 6300% more threads, and a 1185.7% more advanced lithography process.
The AMD Ryzen Threadripper PRO 3995WX is our recommended choice as it beats the Intel Pentium D 820 in performance tests.
Note that Pentium D 820 is a desktop processor while Ryzen Threadripper PRO 3995WX is a server/workstation one.
Other comparisons
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