Average Bench: 59% (533rd of 1323)

Based on 1,325 user benchmarks.  Devices: 1789FBFF000106A5, 1FABFBFF000106A5, 1F8BFBFF000106A5, BFEBFBFF000106A5 Model: Intel(R) Xeon(R) CPU E5520 @ 2.27GHz

Average average bench

The Intel Xeon E5520 averaged 40.9% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. Memory Latency 83.6Pts
Avg. Single Core Mixed Speed 55.9Pts

Very good consistency

The range of scores (95th - 5th percentile) for the Intel Xeon E5520 is just 16.3%. This is a relatively narrow range which indicates that the Intel Xeon E5520 performs reasonably consistently under varying real world conditions.


Avg. Multi Core Mixed Speed 254Pts
Avg. Octa Core Mixed Speed 250Pts

Average Bench

(Based on 1,325 samples)
Min Avg Max
69.3 Memory 83.6 91.2
38.6 1-Core 55.9 61.4
74.4 2-Core 109 122
53.9% 82.9 Pts
Min Avg Max
126 4-Core 194 232
165 8-Core 250 295
29.1% 222 Pts
Min Avg Max
176 64-Core 254 299
17% 254 Pts
User Benchmarks Bench Normal Heavy Server
The fastest CPU (mainstream) averages a speed of 100%
CPU0 PROCESSOR, 1 CPU, 4 cores, 4 threads
Base clock 2.25 GHz, turbo 2.4 GHz (avg)
Memory 82
1-Core 61.1
2-Core 119
56% 87.5 Pts
4-Core 238
8-Core 237
32% 237 Pts
64-Core 241
16% 241 Pts
CPU0 PROCESSOR, 1 CPU, 4 cores, 4 threads
Base clock 2.25 GHz, turbo 2.4 GHz (avg)
Memory 82.2
1-Core 54.5
2-Core 123
55% 86.6 Pts
4-Core 235
8-Core 228
32% 232 Pts
64-Core 232
16% 232 Pts
CPU, 1 CPU, 4 cores, 4 threads
Base clock 2.25 GHz, turbo 2.4 GHz (avg)
Memory 82.9
1-Core 60.1
2-Core 109
55% 84.1 Pts
4-Core 216
8-Core 222
30% 219 Pts
64-Core 195
13% 195 Pts
CPU1, 1 CPU, 4 cores, 8 threads
Base clock 2.25 GHz, turbo 2.35 GHz (avg)
Memory 82.7
1-Core 53.8
2-Core 103
52% 79.9 Pts
4-Core 163
8-Core 241
26% 202 Pts
64-Core 278
19% 278 Pts
Proc 1, 1 CPU, 4 cores, 8 threads
Base clock 2.25 GHz
Memory 68.6
1-Core 36.9
2-Core 68.4
40% 58 Pts
4-Core 116
8-Core 151
18% 133 Pts
64-Core 189
13% 189 Pts
1,325 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 48,477,887 CPUs tested.

Typical Xeon E5520 Builds (Compare 6,895 builds) See popular component choices, score breakdowns and rankings.
Gaming 22%
Desktop 67%
Battle cruiser
Workstation 18%

System: Dell Precision WorkStation T3500

EDIT WITH CUSTOM PC BUILDER Value: 41% - Average Total price: $235

Popular Xeon E5520 systems:

How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - SkillBench (space shooter) tests user input accuracy.
  • - Reports are generated and presented on userbenchmark.com.
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Processor Rankings (Price vs Performance) December 2021 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.



DescriptionIntel® Xeon® Processor E5520 (8M Cache, 2.26 GHz, 5.86 GT/s Intel® QPI)
Code NameNehalem EP
Launch DateQ1'09
Processor NumberE5520
# of Cores4
# of Threads8
Cache8 MB SmartCache
Instruction Set64-bit
Embedded Options AvailableNo
Lithography45 nm
VID Voltage Range0.75V -1.35V
Recommended PriceN/A
Clock Speed2.26 GHz
Max Turbo Frequency2.53 GHz
Bus Speed5.86 GT/s QPI
QPI Links2
Max TDP80 W


Max Memory Size144 GB
Memory TypesDDR3 800/1066
Memory Channels3
Memory Bandwidth25.6 GB/s
Physical Address Extensions40-bit
ECC Memory SupportedYes

Advanced Technologies

Virtualization Tech (VT-x)Yes
Intel 64Yes
Idle StatesYes
Enhanced Intel SpeedStep® TechYes
Turbo Boost Tech1.0
Hyper-Threading TechYes
Virtualization for Directed I/O (VT-d)Yes
VT-x with Extended Page Tables (EPT)Yes
Demand Based SwitchingYes


Package Size42.5mm x 45mm
Max CPU Configuration2
Sockets SupportedFCLGA1366
Processing Die Size263 mm2
# of Processing Die Transistors731 million

Platform Protection

Execute Disable BitYes
Trusted Execution TechNo


Added n/a ago.


23 months ago.

My Server work great with it! It has ESXi 6.5 and works lovely :D I recommend it :)


2 years ago.

Its more expensive than a W3690 and comparatively worse but its a good cpu nonetheless. It served me well as it is getting replaced tomorrow.

1323 Processors (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different CPUs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

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