▻ Alienware X51: How to upgrade your PC RAM (Gaming PC Tutorial/ Guide) - YouTube
Alienware X51 R1/R2/R3 RAM Replacement - iFixit Repair Guide
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A-Tech 16GB (2 x 8GB) RAM for Alienware X51 R2 | DDR3 1600MHz DIMM PC3-12800 240-Pin Non-ECC UDIMM Memory Upgrade Kit at Amazon.com
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CMS 16GB (2X8GB) DDR4 17000 2133MHz NON ECC DIMM Memory Ram Upgrade Compatible with Alienware® x51 R3 - B107 System Specific Memory - Newegg.com
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A-Tech 16GB (2 x 8GB) RAM for Alienware X51 R2 | DDR3 1600MHz DIMM PC3-12800 240-Pin Non-ECC UDIMM Memory Upgrade Kit at Amazon.com
CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC DIMM Memory Ram Upgrade Compatible with Alienware® X51 R2 Desktop - A63 at Amazon.com
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Alienware X51 RAM Upgrade How-to - YouTube
A-Tech 16GB (2 x 8GB) RAM for Alienware X51 R2 | DDR3 1600MHz DIMM PC3-12800 240-Pin Non-ECC UDIMM Memory Upgrade Kit at Amazon.com
CMS 16GB (2X8GB) DDR4 17000 2133MHz NON ECC DIMM Memory Ram Upgrade Compatible with Alienware® x51 R3 Desktop - B107 - Walmart.com
8GB Memory Dell Alienware X51 R3 DDR4 RAM Upgrade
