HyperX Fury 8GB 2666MHz DDR4 CL16 DIMM 1Rx8 Black XMP Desktop Memory Single Stick HX426C16FB3/8 at Amazon.com
Corsair Vengeance LPX 8GB (2 X 4GB) DDR4 2666 (PC4-21300) C16 Desktop Memory for Intel 100/200 Series - Black PC Memory CMK8GX4M2D2666C16 at Amazon.com
Corsair Vengeance LPX 2666MHz DDR4 Memory Kits
Amazon.com: v-Color DDR4 8GB (8GBx1) 2666MHz (PC4-21300) CL19 Standard Desktop Computer PC Ram Memory Module Non ECC Unbuffered DIMM 1.2V(TD48G26S819-VC) : Electronics
Lenovo 8GB DDR4 2666MHz ECC RDIMM Memory at Amazon.com
Corsair Dominator Platinum Series 32GB (4 x 8GB) DDR4 2666 (PC4-21300) 2666MHz C16 Memory Kit at Amazon.com
Amazon.com: Corsair Vengeance SODIMM 32GB (1x32GB) DDR4 2666 C18 1.2V for Intel 9th & 10th Gen Systems, Black : Electronics
Amazon.com: Corsair Vengeance LPX 32GB DDR4 2666 C16 for DDR4 Systems - White : Everything Else