Supports DDR4 speeds from 2133 MHz up to 3333 MHz (O.C.). ASUS ROG Strix X99 Gaming Key Features and Specifications. Unique ROG & ASUS Features Form Factor: ATX (30.5 cm x 24.4 cm). ASUS Part Number (P/N): Often starts with 90MB0QK0-M0EAY1 (this is a common one, but variations may exist).
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