CPU Socket Type: Mounting pitch: narrow ILM (56 x 94 mm)
Recommended cooling device dimension: 70 x 106 mm
Max. length of M4 screw threads: 3.7 mm
Screws longer than 3.7 mm might damage the motherboard
Memory Standard: Supports DDR4 4400+(OC)*/ 4333(OC)/ 4266(OC)/ 4133(OC)/ 4000(OC)/ 3866(OC)/ 3800(OC)/ 3733(OC)/ 3600(OC)/ 3200(OC)/ 2933/ 2800/ 2666/ 2400/ 2133 non-ECC, un-buffered memory
* Please refer to Memory Support List on ASRock's website for more information. (http://www.asrock.com/)
* Core (i9/i7) support DDR4 up to 2933; Core (i5/i3), Pentium and Celeron support DDR4 up to 2666.