Xeon L5520

Details and Benchmarks for Intel Xeon L5520

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Xeon L5520 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

3,997 Rank: 1892
Rank Name Score Visual
1888 Intel Core i3-380UM 3,999
+0.1%
1889 Pentium N3710 3,999
+0.1%
1890 E2-7110 3,998
+0%
1891 Intel Core i7-640UM 3,997
+0%
1892 Xeon L5520 3,997
1893 Celeron N3450 3,994
-0.1%
1894 A8-3520M 3,993
-0.1%
1895 Athlon 64 X2 4000+ 3,993
-0.1%
1896 A6-3410MX 3,992
-0.1%
1897 Core 2 Duo T7700 3,991
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Xeon L5520 based on multi-threaded benchmark results.

4,386 Rank: 1488
Rank Name Score Visual
1484 Core i5-2390T 4,390
+0.1%
1485 Celeron G1840 4,389
+0.1%
1486 Core i7-920XM 4,389
+0.1%
1487 Core i5-2540M 4,387
+0%
1488 Xeon L5520 4,386
1489 Core M 5Y51 4,385
+-0%
1490 Pentium G2120 4,385
+-0%
1491 A10-5750M 4,385
+-0%
1492 Athlon II X4 605e 4,385
+-0%
1493 Xeon X5472 4,384
+-0%

View full ranking →

Singlecore Score

Single-core performance score for Xeon L5520 based on single-threaded benchmark results.

3,738 Rank: 1923
Rank Name Score Visual
1919 Pentium SU4100 3,755
+0.5%
1920 Core 2 Duo U9600 3,752
+0.4%
1921 E2-2000 3,742
+0.1%
1922 Celeron 807 3,738
+0%
1923 Xeon L5520 3,738
1924 Pentium SU2700 3,738
+0%
1925 A4-4355M 3,737
+-0%
1926 Celeron 887 3,735
-0.1%
1927 Celeron N2830 3,735
-0.1%
1928 Phenom X3 8550 3,735
-0.1%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Xeon L5520 based on integer math, floating point math, and prime number computation benchmarks.

4,564 Rank: 1099
Rank Name Score Visual
1095 Core i3-4170 4,565
+0%
1096 Core i3-4340 4,565
+0%
1097 Phenom II X6 1045T 4,565
+0%
1098 Core i7-7500U 4,564
+0%
1099 Xeon L5520 4,564
1100 PRO A10-9700E 4,564
+0%
1101 Ryzen Embedded R1606G 4,563
+-0%
1102 Core i7-6650U 4,563
+-0%
1103 Core i5-7267U 4,563
+-0%
1104 Pentium G3470 4,563
+-0%

View full ranking →

Data Processing

Aggregated score for Xeon L5520 based on data encryption, data compression, and string sorting benchmarks.

4,534 Rank: 1136
Rank Name Score Visual
1132 Phenom II X4 840T 4,535
+0%
1133 A8-3870K 4,535
+0%
1134 Core i3-8130U 4,534
+0%
1135 Core i7-4610M 4,534
+0%
1136 Xeon L5520 4,534
1137 Xeon E5472 4,534
+0%
1138 Core i7-6650U 4,533
+-0%
1139 Core i3-7100H 4,533
+-0%
1140 Athlon II X4 640 4,533
+-0%
1141 Core i5-4330M 4,533
+-0%

View full ranking →

Physics & Compute

Aggregated score for Xeon L5520 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,549 Rank: 1111
Rank Name Score Visual
1107 Core i5-4210M 4,550
+0%
1108 Core i3-7100U 4,550
+0%
1109 Xeon L5638 4,550
+0%
1110 Core i3-2125 4,549
+0%
1111 Xeon L5520 4,549
1112 Pentium J6426 4,549
+0%
1113 Pentium Gold G5420T 4,548
+-0%
1114 Core i5-3470T 4,548
+-0%
1115 Core i3-3225 4,548
+-0%
1116 Core i5-4200M 4,548
+-0%

View full ranking →

Xeon L5520 Details

The Intel Xeon L5520, launched in March 2009, is a server-class processor built on the 45 nm Gainestown architecture, making it over 14 years old as of 2026. Despite its age, the L5520 remains a notable example of early 64-bit server computing with integrated virtualization and ECC memory support. Designed for multi-processor environments, it supports up to two CPUs in a symmetric multiprocessing (SMP) configuration, offering a practical solution for workstations and entry-level servers of its era. The processor operates at a base frequency of 2.26 GHz, with a turbo boost up to 2.48 GHz, and features a 60 W TDP, reflecting Intel’s focus on efficiency during that generation. With 4 cores and 8 threads enabled via Hyper-Threading, the L5520 delivers a balanced performance profile for its time, though it now trails significantly behind modern processors in both single- and multi-core performance.

In terms of specifications, the Xeon L5520 uses the FCLGA1366 socket and supports DDR3 800/1066 memory via a triple-channel configuration, enabling a maximum memory bandwidth of 25.6 GB/s and up to 144 GB of ECC-capable RAM. It includes 8 MB of L3 cache and integrates a low-profile GPU, though the processor lacks an integrated graphics unit, requiring a discrete card for display output. The chip contains 731 million transistors and features a locked multiplier, which limits overclocking potential. Notable extensions include AVX2, AES-NI, VT-x, VT-d, and Intel vPro, providing strong support for virtualization, encryption, and enterprise-level management.

Benchmark results place the Xeon L5520 at an Overall Score of 3997, ranking #1891 of 2060 processors, with Singlecore and Multicore Scores of 3738 and 4386, respectively. These results reflect its positioning as a capable but dated server chip, outperformed by modern desktop and server processors. In the Passmark rankings, it scores 4564 in Number Crunching, 4534 in Data Processing, and 4549 in Physics Compute, placing it in the lower tier of contemporary performance benchmarks. While it ranks ahead of older mobile and low-power chips like the Celeron N3060 and Pentium G2120, it falls behind even mainstream CPUs like the Core i3-6098P and A8-3870K.

As of March 2026, the Xeon L5520 is best suited for legacy systems, low-load virtualization environments, or as a cost-effective upgrade in older server infrastructure. Its integrated ECC memory and virtualization support remain valuable in mission-critical scenarios, but its performance is now negligible compared to modern CPUs. For users seeking modern performance, the L5520 serves more as a historical reference than a viable current-day option.
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Intel Xeon L5520

Main Specifications

Designer: Intel
Name: Xeon L5520
Model Number: L5520
Cores: 4
Threads: 8
Base Frequency: 2260 MHz
Clock Multiplier: 17x (locked)
Core Name: Gainestown
Socket: FCLGA1366
Package: FC-LGA8
Target Segment: Server
Max CPUs: 2
TDP: 60 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 0.244 MiB
L3 Cache: 7.629 MiB

Memory Specifications

Supported Memory Type: DDR3 800/1066
Memory Channels: 3
Maximum Memory: 0 GB
Maximum Bandwidth: 25.6 GB/s
ECC Support: Yes

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 16
PCIe Configuration: 1x16, 2x8, 1x8 2x4

Integrated Graphics

GPU: HD Graphics 4000
GPU Designer: Intel
GPU Max Frequency: 1200 MHz

Physical Specifications

Process: 45 nm
Die Area: 263 mm²
Transistor Count: 0.00 billion
Manufacturer: Intel
Word Size: 64-bit

CPU Features

MMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX2 AES x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA
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