The Intel X99 chipset, codenamed Wellsburg, is a high-performance platform for enthusiasts and professionals using LGA 2011-3 processors. It introduced DDR4 and quad-channel memory, delivering major bandwidth gains. X99 also offers abundant PCIe lanes for multi-GPU setups and NVMe storage, plus USB 3.0, SATA Express, M.2, and RAID options. Its strong power delivery and BIOS controls made it popular with overclockers. Though powerful and feature-rich, X99 was later succeeded by newer high-end Intel chipsets like X299.