Alienware X51-R2 Review | PCMag
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Alienware X51 R2 Repair - iFixit
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Alienware X51 R2 Parts & Upgrades | Dell USA
Alienware X51 R2 vs. Alienware Aurora R13 Comparison
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Alienware X51 R2 - DT - Core i7 4770 / 3.4 GHz - RAM 8 GB - HDD 1 TB - DVD-Writer / Blu-ray - GF GTX 660 - GigE - WLAN:
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How to install/upgrade RAM in the Alienware X51 - YouTube
Alienware X51 R1/R2/R3 RAM Replacement - iFixit Repair Guide
Best Buy: Alienware X51 R2 Desktop Intel Core i7 16GB Memory 1TB Hard Drive + 256GB Solid State Drive Black AX51R217153BK
