RAM Speeds Don't Match

[jakon72]

So I just picked up another 8Gb stick of Corsair Vengeance 2400Mhz RAM to add to my 16. When I check Speccy I realized that the new stick is running at 2400Mhz but the old sticks are running at 2133Mhz. This is weird to me because I have my RAM set to run in X.M.P. mode in my BIOS. On top of that, they're set to run at 2400Mhz as well. I noticed that the CAS latency on the newer stick is 16 and the older sticks run at 14 but I wasn't able to change it in the BIOS. Any idea why they're not all running at 2400Mhz?

[cj09beira]

because they are probably different memory chips, and because of that they need different timings, the frequency difference is probably the motherboard going into a safe setting 

[jakon72]

All of my RAM is Corsair Vengeance. Is there a way for me to manually set them all to the same timings and frequency?

[Cyracus]

corsair vengeance comes in all kinds of speeds and timings https://pcpartpicker.com/products/memory/#m=11