Ryzen Threadripper PRO 9945WX vs Xeon E7-2820
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 169 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Series | Intel Xeon E7 | no data |
| Power efficiency | no data | 3.87 |
| Designer | Intel | AMD |
| Manufacturer | Intel | TSMC |
| Architecture codename | Westmere-EX (2011) | Shimada Peak (2025) |
| Release date | 3 April 2011 (14 years ago) | July 2025 (recently) |
| Launch price (MSRP) | $1,334 | no data |
Detailed specifications
Xeon E7-2820 and Ryzen Threadripper PRO 9945WX 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 | 8 (Octa-Core) | 12 (Dodeca-Core) |
| Threads | 16 | 24 |
| Base clock speed | 2 GHz | 4.7 GHz |
| Boost clock speed | 2.27 GHz | 5.4 GHz |
| Bus type | QPI | no data |
| Bus rate | 5.86 GT/s | no data |
| Multiplier | 15 | no data |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 256 KB (per core) | 1 MB (per core) |
| L3 cache | 18 MB (shared) | 64 MB (shared) |
| Chip lithography | 32 nm | 4 nm |
| Die size | 513 mm2 | 2x 70.6 mm2 |
| Maximum case temperature (TCase) | 64 °C | no data |
| Number of transistors | 2,600 million | 16,630 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Xeon E7-2820 and Ryzen Threadripper PRO 9945WX 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 (Multiprocessor) | 1 |
| Socket | LGA1567 | sTR5 |
| Power consumption (TDP) | 105 Watt | 350 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E7-2820 and Ryzen Threadripper PRO 9945WX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | no data |
| AES-NI | + | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 1.0 | no data |
| Hyper-Threading Technology | + | no data |
| Thermal Monitoring | + | - |
| Precision Boost 2 | no data | + |
Security technologies
Xeon E7-2820 and Ryzen Threadripper PRO 9945WX 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 Xeon E7-2820 and Ryzen Threadripper PRO 9945WX are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E7-2820 and Ryzen Threadripper PRO 9945WX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-800, DDR3-978, DDR3-1066, DDR3-1333, Speed-1066 | DDR5 |
| Maximum memory size | 1 TB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 34.113 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | N/A |
Peripherals
Specifications and connection of peripherals supported by Xeon E7-2820 and Ryzen Threadripper PRO 9945WX.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 136 |
Pros & cons summary
| Physical cores | 8 | 12 |
| Threads | 16 | 24 |
| Chip lithography | 32 nm | 4 nm |
| Power consumption (TDP) | 105 Watt | 350 Watt |
Xeon E7-2820 has 233.3% lower power consumption.
Ryzen Threadripper PRO 9945WX, on the other hand, has 50% more physical cores and 50% more threads, and a 700% more advanced lithography process.
We couldn't decide between Intel Xeon E7-2820 and AMD Ryzen Threadripper PRO 9945WX. We've got no test results to judge.
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