Random Access Memory (RAM) is a type of hardware that your computer uses to store information. Adding memory is one of the most cost-effective ways to improve your computer's performance. 

Dell™ Branded memory offered in the Memory Selector has gone through rigorous quality assurance and quality control testing to ensure it will work with your specific Dell System so it is fully compatible and supported by Dell. Getting unqualified or generic products from other vendors can cause downtime that can seriously cost your business and put your entire system at risk.

Memory offered now may differ in speed from the original system memory but has been qualified to work in the system. When mixed, the memory will perform at the lowest speed populated or the highest speed allowed by the system.

Compatibility

• Dell Memory Upgrades are the same parts that we use in original Dell systems. They will work right the first time, and we guarantee they will be compatible.
• Dell Memory is built using industry leading OEM grade quality parts.
• Only first pass yielded product is acceptable to meet Dell's high-quality standard, only available when purchased from Dell.

Warranty

• Our Limited One Year Warranty guarantees that if our Dell memory should ever fail, we will replace it.
• Dell Memory means no worry of voiding your system's hardware warranty.

Technical Support

• Our experienced technical support staff is available to answer any questions regarding your Dell Memory upgrade.
• Memory that is not Dell Memory may not be supported by Dell's Technical Support.

• Desktop PC
• Workstation

Dell:

• Alienware Area-51 R3
• Alienware Area-51 R4
• Alienware Area-51 R5
• Alienware Area-51 R6
• Alienware Area-51 R7
• Alienware Aurora R5
• Alienware Aurora R6
• Alienware Aurora R7
• Alienware Aurora R8
• Alienware Aurora R9
• Gaming Desktop (5000)
• Gaming Desktop (5090)
• Gaming Desktop (5676)
• Inspiron 3470 Small Desktop
• Inspiron 3471 Small Desktop
• Inspiron 3668 Desktop
• Inspiron 3670 Desktop
• Inspiron 3671 Desktop
• Inspiron 3880 Desktop
• Inspiron 5675 Desktop
• Inspiron 5680 Desktop
• OptiPlex 3050 Small Form Factor
• OptiPlex 3050 Tower
• OptiPlex 3060 Small Form Factor
• OptiPlex 3060 Tower
• OptiPlex 3070 Small Form Factor
• OptiPlex 3070 Tower
• OptiPlex 3080 Small Form Factor
• OptiPlex 3080 Tower
• OptiPlex 5050 Small Form Factor
• OptiPlex 5050 Tower
• OptiPlex 5055 Small Form Factor

https://www.dell.com/en-uk/shop/dell-memory-upgrade-8-gb-1rx8-ddr4-udimm-3200-mt-s/apd/ab120718/memory