TIER ONE DISTRIBUTION SL Tier One Distribution is specialised in PC components including CPUs, Memory, Hard Drives, Opticals, Motherboards, SSDs, Systems, Graphics Cards, Software and PC Peripherals. We only select proven A-brands to ensure the most up-2-date and reliable products and services for our customers and we maintain close partnerships with manufacturers such as AMD, ASRock, Asus, Intel, Kingston, Lexar, LG, Micron, Microsoft, Samsung, Seagate, Toshiba and Western Digital.