Dell Inspiron 5521 | RAM Upgrade | Memory Module

I have a Dell Inspiron 5521 Laptop having 4 GB RAM. I am planning to add additional 8GB RAM.

So, the Total RAM would be 4+8= 12 GB.

I found the following information in Dell Specifications User Guide:



Inspiron 5521 Two internally-accessible DDR3 SODIMM connectors

Inspiron 5537 Two internally-accessible DDR3L SODIMM connectors

Capacity Up to 16 GB


Inspiron 5521 Dual channel DDR3

Inspiron 5537 Dual channel DDR3L

Speed Up to 1600 MHz

Configurations supported 2 GB, 4 GB, 6 GB, 8 GB, and 16 GB

I found the following Memory Module information by running Command on my Laptop: 

Total Width: 64 bits

Data Width: 64 bits

Size: 4096 MB

Form Factor: SODIMM

Set: None

Locator: JDIMM2

Bank Locator: Not Specified

Type: DDR3

Type Detail: Synchronous

Speed: 1600 MHz

Question 1: Is it possible to add 4+8= 12GB configuration in this Laptop?

Question 2: Should i use DDR3 instead of DDR3L RAM in this Laptop?

Question 3: Which RAM is best supported with this Laptop, Kingston or CORSAIR Vengeance?

Note: I am using Ubuntu on this Machine.

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RE: Dell Inspiron 5521 | RAM Upgrade | Memory Module

1. Yes, albeit at a performance penalty.  It's designed for a pair of matched modules.

2.  Either will work by itself.  Don't mix DDR3 and DDR3L though -- if you have DDR3, use that; if L, use that if you're adding a module.

3.  Crucial is hard to beat particularly given its compatibility guarantee when purchased through its memory configurator.  Anything else- ask the vendor about compatibility guarantees (or be sure you understand the possible restocking charge if a return is required).


RE: Dell Inspiron 5521 | RAM Upgrade | Memory Module

Thank you for your answers.

Q1: Can you kindly elaborate the first answer regarding the performance penalty?

Such as, how much performance is suffered?

Q2: Performance achieved by 4+8=12 GB will be better than 4+4= 8 GB. Right?

Any other information or suggestions are welcome.

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RE: Dell Inspiron 5521 | RAM Upgrade | Memory Module

The memory will run at half-bandwidth if mismatched modules are installed.  How much of a difference that makes depends on how memory intensive your applications are -- for anything that can reasonably run on a low-end system like this, 8 G in dual channel mode is preferable to 12 in single channel.

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