Alienware X51 R2/R3 CPU Replacement - iFixit Repair Guide
Old & New (Bring Alienware X51 R2 back to life) by meng8123 - Intel Core i7-4770, GeForce GTX 970, EVGA Hadron Mini ITX Tower w/500 W Power Supply - PCPartPicker
Alienware x51 r3 CPU Fan Replacement - iFixit Repair Guide
X51 R2, heatsink upgrade and shroud mod - Dell Community
X51 R2 CPU Cooler Upgrade and GTX 970 Success - Dell Community
Alienware X51 CPU cooler replacement Noctua NH-L9I : r/Alienware
Alienware X51 R2 Desktop CPU Cooling Fan F718G | eBay
X51 Heat Sync Casing replacement - Dell Community
X51 R2 CPU Cooler Upgrade and GTX 970 Success - Dell Community
X51 R2 CPU Cooler Upgrade and GTX 970 Success - Dell Community
X51 Heat Sync Casing replacement - Dell Community
X51 R2 CPU Cooler Upgrade and GTX 970 Success - Dell Community
X51 R2 CPU Cooler Upgrade and GTX 970 Success - Dell Community
NEW Alienware X51 R1 R2 R3 CPU Heatsink with Cooler Fan 07C20C 0KN1NP 0WKGR1 894586237550 | eBay
Amazon.com: PartsCollection Fan Replacement for Dell Desktop 7C20C Intel Fan Alienware X51 : Electronics