leosucena Posted December 16, 2019 Share Posted December 16, 2019 Hi there! I have an Asus B450M-A Bios version 0409 and a Ryzen 7 2700x. I got 2 kits of "Corsair Vengeance RGB PRO 16GB (2x8GB) DDR4 3200 PC4-25600 - Black (CMW16GX4M2C3200C16)" but does not matter how I place these kits, I only can get 3200hz when I use one kit at once!(2x8gb)- Using the Profile 1 "XMP" of my Mobo. In other words: When I am using 4x8gb, the max speed that I can get is 2700hz. Anybody can help me? PS: the serial numbers of 2 kits are in sequence. Kit A - Serial number ending in 19,20 Kit b - Serial number ending in 21,22 Cheers! Link to comment Share on other sites More sharing options...
c-attack Posted December 17, 2019 Share Posted December 17, 2019 You can’t use the XMP (AMD version) when combining kits. It was written for 2x8, not 4x8. You need to set manual primary timings, frequency, and voltage. Link to comment Share on other sites More sharing options...
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