Yeston RX 550 GAEA 1019 MHz 1071 MHz 1500 MHz 4 GB, 223 mm/8.8 inches Yeston RX 550 Low Profile 1019 MHz 1071 MHz 1500 MHz 4 GB, 170 mm/6.7 inches, Single-slot Yeston RX 550 Speed Edition 1019 MHz 1071 MHz 1500 MHz 4 GBFeb...