X51 R2 CPU Cooler Upgrade and GTX 970 Success - Dell Community
Dell Alienware X51 Cpu Fan & Heatsink WKGR1 7C20C Prices | Shop Deals Online | PriceCheck
Alienware x51 R2 - Replacing CPU Cooler - YouTube
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
CPU Fan Compatible with Dell Alienware X51 R2 7C20C 0.75A 0.6A US Stock | eBay
Dell Alienware X51 R2 Desktop Series CPU Fan with Heatsink 7C20C-A01 WKGR1 | eBay