Intel Xeon L5520 vs X5450

General info

Comparing Xeon L5520 and Xeon X5450 processor market type (desktop or notebook), architecture, sales start time and price.

Place in our rating
Value for money (0-100)
Market segment
Architecture codename
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Release date
March 2009 (12 years ago)
1 October 2007 (13 years ago)
Launch price (MSRP)
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Price now
$59 (0.6x MSRP)

Technical specs

Xeon L5520 and Xeon X5450 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)
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Boost clock speed
2.27 GHz
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L1 cache
64 KB (per core)
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L2 cache
256 KB (per core)
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L3 cache
8 MB (shared)
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Chip lithography
45 nm
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Die size
263 mm2
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Number of transistors
731 million
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64 bit support


Information on Xeon L5520 and Xeon X5450 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
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Thermal design power (TDP)
60 Watt
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Technologies and extensions

Technological solutions and additional instructions supported by Xeon L5520 and Xeon X5450. You'll probably need this information if you require some particular technology.

Hyper-Threading Technology
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Security technologies

Xeon L5520 and Xeon X5450 technologies aimed at improving security, for example, by protecting against hacks.

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Virtualization technologies

Virtual machine speed-up technologies supported by Xeon L5520 and Xeon X5450 are enumerated here.

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Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon L5520 and Xeon X5450. Depending on the motherboards, higher memory frequencies may be supported.

Supported memory types
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Benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Overall 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.

Xeon L5520 2.63
Xeon X5450 2.70 +2.7%


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.

Xeon L5520 2312
Xeon X5450 2367 +2.4%

Mining hashrates

Cryptocurrency mining performance of Xeon L5520 and Xeon X5450. Usually measured in megahashes per second.

Bitcoin / BTC (SHA256)
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9.6 Mh/s

Gaming performance

Let's see how good Xeon L5520 and Xeon X5450 are for gaming compared with game system requirements. Remember that sometimes official requirements may reflect real performance inaccurately. Also, your gaming PC must have a decent enough GPU to perform well.

Both CPUs satisfy the 86% minimum and 78% recommended requirements of all games known to us.


Advantages of Intel Xeon L5520

Cheaper ($59 vs $109)

Intel 64 (64-bit Intel CPU architecture. Almost identical to AMD64, except small and rarely used nuances)

HyperThreading (allows one physical CPU function as two logical ones. It increases performance, since while one logical CPU is waiting for data, the second may still do useful work)

TXT (Trusted Execution Technology - protects the system against viruses and rootkits residing in BIOS or in a boot sector)

Advantages of Intel Xeon X5450

2.7% higher performance in benchmarks

So, which one is the better CPU?

Technical City couldn't decide between Intel Xeon L5520 and Intel Xeon X5450. The differences in performance seem too small.

Should you still have questions on choice between Xeon L5520 and Xeon X5450, ask them in Comments section, and we shall answer.

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Intel Xeon L5520
Intel Xeon X5450

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Advices and comments

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