1. HyperX Fury RAM Kit (Blue) Capacity: 8GB (2x 4GB). Type and Speed: DDR3 - 1600MHz. Features: Fury heatsink, supports automatic compatibility. 2. HyperX Blu RAM Kit (Classic Blue) Capacity: 8GB (2x 4GB). Type and Speed: DDR3 - 1600MHz. Features: Blue heatsink, fully compatible to work with the Fury kit to upgrade memory to 16GB. 3. HyperX RAM Stick (Black) Capacity: 16GB (1 stick). Type and Speed: DDR4 - 2400MHz. Features: Very large capacity in a single stick for modern devices. Important Compatibility Notes: DDR3 Compatibility: You can combine the two kits (Fury and Blu) in one device to give you a total of 16GB DDR3, and they are very compatible because they have the same speed and voltage. DDR4 Difference: The black stick (DDR4) can never be combined with the blue kits (DDR3) due to different slots and technology. Contact via messages Sale to the highest bidder Prefer to sell in Jeddah