3x8 gb ram vs 4x8 gb mixed(cas 15 and 16)

[Feudal_Knight]

I have 3x8gb sticks of ddr4 3000 CAS 15 ram (2 corsair vengeance pro, 1 corsair lpx). I have the pros running in dual channel. I'm looking at getting another 8gb stick but it would be from a different manufacture with a CAS latency of 16. Would they work together in dual channel?

My mobo is a gigabyte ga-z270p-d3

 

Lpx ram(I only have 1 stick): https://www.amazon.com/Corsair-Vengeance-3000MHz-Desktop-Memory/dp/B0134EW7G8/ref=mp_s_a_1_1?ie=UTF8&qid=1543598181&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=16gb+lpx

 

 Vengeance pro:

https://www.amazon.com/CORSAIR-Vengeance-3200MHz-Desktop-Memory/dp/B07D1XJWSJ/ref=mp_s_a_1_1?ie=UTF8&qid=1543598437&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=16gb%2Bvengeance%2Bpro&dpPl=1&dpID=41jRizrlW1L&ref=plSrch&th=1&psc=1

 

Ram stick I'm looking at:

https://www.amazon.com/dp/B01IW7Z9GM/?tag=pcpapi-20

[TH3R34P3R]

i mean, it would most likely work, but you should try to keep the ram all the same, as it is paired to work better. 

[dj_ripcord]

You could see some issues. It is best to always make sure if you have two sticks running on the same channel to make sure they are EXACTLY the same. Even sticks that aren't manufactured togehter and packaged together have been known to cause issues in some rare cases.

[Crunchy Dragon]

RAM is RAM, your board shouldn't care as long as it's all the same type(DDR3 can't mix with DDR4).

 

What will most likely happen here is your board will downclock all the memory to match the speed and timings of the slowest stick.

[Feudal_Knight]

28 minutes ago, TH3R34P3R said:

i mean, it would most likely work, but you should try to keep the ram all the same, as it is paired to work better. 

Originally I was going to use my 16gb LPX kit, but one of the sticks somehow broke in the process of removing the heat spreaders to replace them with RGB ones. Im guessing I caused heat damage when using a hairdryer to loosen the adhesive. I could have ordered a 8gb LPX replacement stick, but I would have to remove the heat spreader again and risk bricking it aswell. I ordered a 16gb RGB from corsair with the same specs to minimize compatibility issues. I figured it would be worth upgrading to 32 gb to get dual channel on the 3rd stick. unfortunately I could not find any 8gb ddr4 3000 cas 15 sticks that did not have a heat spreader.