Xeon L5520 vs X5550
Aggregate performance score
X5550 outperforms L5520 by a substantial 33% based on our aggregated benchmark results.
Primary details
Comparing Xeon X5550 and Xeon L5520 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1853 | 2070 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 30.53 | 4.98 |
| Market segment | Server | Server |
| Architecture codename | Gainestown (2009−2010) | Gainestown (2009−2010) |
| Release date | March 2009 (15 years ago) | March 2009 (15 years ago) |
| Launch price (MSRP) | $62 | $100 |
| Current price | $71 (1.1x MSRP) | $37 (0.4x MSRP) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon X5550 has 513% better value for money than Xeon L5520.
Detailed specifications
Xeon X5550 and Xeon L5520 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 | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 8 | 8 |
| Base clock speed | 2.66 GHz | 2.26 GHz |
| Boost clock speed | 3.06 GHz | 2.48 GHz |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 256 KB (per core) | 256 KB (per core) |
| L3 cache | 8 MB (shared) | 8 MB (shared) |
| Chip lithography | 45 nm | 45 nm |
| Die size | 263 mm2 | 263 mm2 |
| Maximum core temperature | 75 °C | 70 °C |
| Number of transistors | 731 million | 731 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Xeon X5550 and Xeon L5520 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 | 2 |
| Socket | FCLGA1366,PLGA1366 | FCLGA1366 |
| Power consumption (TDP) | 95 Watt | 60 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon X5550 and Xeon L5520. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | 1.0 |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Demand Based Switching | + | + |
| PAE | 40 Bit | 40 Bit |
| Status | Discontinued | Discontinued |
Security technologies
Xeon X5550 and Xeon L5520 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon X5550 and Xeon L5520 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon X5550 and Xeon L5520. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 144 GB | 144 GB |
| Max memory channels | 3 | 3 |
| Maximum memory bandwidth | 32 GB/s | 25.6 GB/s |
| ECC memory support | + | + |
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.
X5550 outperforms L5520 by 33% 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%
X5550 outperforms L5520 by 33% 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%
X5550 outperforms L5520 by 5% 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%
L5520 outperforms X5550 by 3% in GeekBench 5 Multi-Core.
Pros & cons summary
| Performance score | 1.96 | 1.47 |
| Cost | $62 | $100 |
| Power consumption (TDP) | 95 Watt | 60 Watt |
The Xeon X5550 is our recommended choice as it beats the Xeon L5520 in performance tests.
Should you still have questions on choice between Xeon X5550 and Xeon L5520, ask them in Comments section, and we shall answer.
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