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Dell XPS 15 (L521X) - Notebookcheck.net External Reviews
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CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Dell® Xps 15 (L521X) Notebooks - A7 at Amazon.com
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Dell XPS 15 (L521X) - full specs, details and review
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Dell XPS 15 Review - Notebook Reviews by MobileTechReview
