Product Description About this item 2666MHz Speed. Stability: Each module is built using carefully selected DRAM to allow excellent stability Compatibility: Auto-overclocking with compatible laptop/notebooks (no BIOS configuration required) Design: Slim and attractive design to ensure physical compatibility with all 8th Generation or newer Intel Core i7, and AMD Ryzen 4000 Series... https://www.electronics70off.co.uk/products/Corsair-Vengeance-SODIMM-64GB-%284x16GB%29-DDR4-2666MHz-CL18-Memory-for-Laptop%7B47%7DNotebooks-%28Intel-6th-Generation-Intel-Core-i5-and-i7-Processor-Support%29-Black.html