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Dual Channel x4 DDR4 up to 128Gb & 5100Mhz (3600Mhz if x4 sticks used). https://www.msi.com/Motherboard/MAG-B550-TOMAHAWK/support#support-main-block-qvl Compatibility list link from MSI above. 5100(OC)/ 5000(OC)/ 4866(OC)/ 4800(OC)/ 4600(OC)/ 4533(OC)/ 4400(OC)/ 4300(OC)/ 4266(OC)/ 4200(OC)/ 4133(OC)/ 4000(OC)/ 3866(OC)/ 3733(OC)/ 3600(OC)/ 3466(OC)/ 3400(OC)/ 3333(OC)/ 3300(OC)/ 3200(JEDEC)/ 3000(JEDEC)/ 2933(JEDEC)/ 2666(JEDEC)/ 2400(JEDEC)/ 2133(JEDEC) MHz
Sorry, there was a problem. Please try again later.Any ddr4 ram should be compatible with this board
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