Xeon W-2123 vs E5-2665
Aggregated performance score
W-2123 outperforms E5-2665 by a minimal 3% based on our aggregated benchmark results.
Primary details
Comparing Xeon E5-2665 and Xeon W-2123 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1083 | 1064 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.03 | 23.26 |
| Market segment | Server | Server |
| Series | no data | Intel Xeon W |
| Architecture codename | Sandy Bridge-EP (2012) | Skylake (server) (2017−2019) |
| Release date | 6 March 2012 (12 years ago) | 29 August 2017 (6 years ago) |
| Launch price (MSRP) | $142 | $294 |
| Current price | $99 (0.7x MSRP) | $30 (0.1x MSRP) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon W-2123 has 2158% better value for money than Xeon E5-2665.
Detailed specifications
Xeon E5-2665 and Xeon W-2123 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) | 4 (Quad-Core) |
| Threads | 16 | 8 |
| Base clock speed | 2.4 GHz | 3.6 GHz |
| Boost clock speed | 3.1 GHz | 3.9 GHz |
| Bus support | no data | 4 × 8 GT/s |
| L1 cache | 64 KB (per core) | 64K (per core) |
| L2 cache | 256 KB (per core) | 1 MB (per core) |
| L3 cache | 20480 KB (shared) | 8.25 MB (shared) |
| Chip lithography | 32 nm | 14 nm |
| Die size | 435 mm2 | 484 mm2 |
| Maximum core temperature | 82 °C | 65 °C |
| Maximum case temperature (TCase) | no data | 64 °C |
| Number of transistors | 2,270 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | No | No |
Compatibility
Information on Xeon E5-2665 and Xeon W-2123 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 | FCLGA2011 | FCLGA2066 |
| Power consumption (TDP) | 115 Watt | 120 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2665 and Xeon W-2123. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | no data | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | - | - |
| Demand Based Switching | + | + |
| PAE | no data | 46 Bit |
| Turbo Boost Max 3.0 | no data | - |
| Status | Discontinued | Discontinued |
Security technologies
Xeon E5-2665 and Xeon W-2123 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| Secure Key | no data | + |
| MPX | no data | + |
| Identity Protection | - | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-2665 and Xeon W-2123 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2665 and Xeon W-2123. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400, DDR4-2666 |
| Maximum memory size | 384 GB | 512 GB |
| Max memory channels | 4 | 4 |
| Maximum memory bandwidth | 51.2 GB/s | 85.3 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2665 and Xeon W-2123.
| PCIe version | 3.0 | 3.0 |
| PCI Express lanes | 40 | 48 |
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.
W-2123 outperforms E5-2665 by 3% based on our aggregated benchmark results.
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.
Benchmark coverage: 68%
W-2123 outperforms E5-2665 by 3% in Passmark.
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.
Benchmark coverage: 42%
W-2123 outperforms E5-2665 by 147% in GeekBench 5 Single-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.
Benchmark coverage: 42%
W-2123 outperforms E5-2665 by 45% in GeekBench 5 Multi-Core.
Pros & cons summary
| Performance score | 5.36 | 5.50 |
| Recency | 6 March 2012 | 29 August 2017 |
| Physical cores | 8 | 4 |
| Threads | 16 | 8 |
| Cost | $142 | $294 |
| Chip lithography | 32 nm | 14 nm |
| Power consumption (TDP) | 115 Watt | 120 Watt |
Given the minimal performance differences, no clear winner can be declared between Xeon E5-2665 and Xeon W-2123.
Should you still have questions on choice between Xeon E5-2665 and Xeon W-2123, ask them in Comments section, and we shall answer.
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