Xeon X5660 vs Ryzen Threadripper 3990X
Aggregate performance score
Ryzen Threadripper 3990X outperforms Xeon X5660 by a whopping 1228% based on our aggregate benchmark results.
Primary details
Comparing Ryzen Threadripper 3990X and Xeon X5660 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 33 | 1462 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 9.53 | 3.05 |
| Market segment | Desktop processor | Server |
| Series | AMD Ryzen Threadripper | no data |
| Power efficiency | 17.00 | 3.77 |
| Architecture codename | Matisse (2019−2020) | Westmere-EP (2010−2011) |
| Release date | 7 February 2020 (4 years ago) | 16 March 2010 (14 years ago) |
| Launch price (MSRP) | $3,999 | $33 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Ryzen Threadripper 3990X has 212% better value for money than Xeon X5660.
Detailed specifications
Ryzen Threadripper 3990X and Xeon X5660 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 | 64 (Tetrahexaconta-Core) | 6 (Hexa-Core) |
| Threads | 128 | 12 |
| Base clock speed | 2.9 GHz | 2.8 GHz |
| Boost clock speed | 4.3 GHz | 3.2 GHz |
| Multiplier | 29 | no data |
| L1 cache | 96K (per core) | 64 KB (per core) |
| L2 cache | 512K (per core) | 256 KB (per core) |
| L3 cache | 256 MB | 12 MB (shared) |
| Chip lithography | 7 nm, 12 nm | 32 nm |
| Die size | 74 mm2 | 239 mm2 |
| Maximum core temperature | no data | 81 °C |
| Maximum case temperature (TCase) | 95 °C | no data |
| Number of transistors | 3,800 million | 1,170 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen Threadripper 3990X and Xeon X5660 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 | 1 | 2 |
| Socket | TR4 | FCLGA1366,LGA1366 |
| Power consumption (TDP) | 280 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen Threadripper 3990X and Xeon X5660. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.2 |
| AES-NI | + | + |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | 1.0 |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Demand Based Switching | no data | + |
| PAE | no data | 40 Bit |
| Precision Boost 2 | + | no data |
Security technologies
Ryzen Threadripper 3990X and Xeon X5660 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 Ryzen Threadripper 3990X and Xeon X5660 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 Ryzen Threadripper 3990X and Xeon X5660. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR3 |
| Maximum memory size | 256 GB | 288 GB |
| Max memory channels | 4 | 3 |
| Maximum memory bandwidth | 102.403 GB/s | 32 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by Ryzen Threadripper 3990X and Xeon X5660.
| PCIe version | 4.0 | 2.0 |
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.
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.
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 | 52.20 | 3.93 |
| Recency | 7 February 2020 | 16 March 2010 |
| Physical cores | 64 | 6 |
| Threads | 128 | 12 |
| Chip lithography | 7 nm | 32 nm |
| Power consumption (TDP) | 280 Watt | 95 Watt |
Ryzen Threadripper 3990X has a 1228.2% higher aggregate performance score, an age advantage of 9 years, 966.7% more physical cores and 966.7% more threads, and a 357.1% more advanced lithography process.
Xeon X5660, on the other hand, has 194.7% lower power consumption.
The Ryzen Threadripper 3990X is our recommended choice as it beats the Xeon X5660 in performance tests.
Note that Ryzen Threadripper 3990X is a desktop processor while Xeon X5660 is a server/workstation one.
Should you still have questions on choice between Ryzen Threadripper 3990X and Xeon X5660, 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.
