[SOLVED] 2 Different (but very similar) pairs of memory, compatible?

[bk1guy]

Hello all. I currently have a system that has 2 sticks of G.Skill 8GB DDR4 at 3000MHz. I want to add 2 more sticks, and there is a local person selling 2 sticks that physically look exactly the same and are also 3000Mhz. The model numbers are slightly different.

My current sticks:
F4-3000C15D-16GVRB
CL 15-16-16-35, 1.35V

The sticks for sale:
F4-3000C16D-16GRVB
CL 16-18-18-38, 1.35V

The only difference is the latency numbers. Again, I have 2 sticks already in Dual-channel mode. I would be putting the other 2 sticks in as their own pair. Can I place the second pair in the other dual-channel slots? Any help would be appreciated.

Thanks
-bk1guy

 

[Deleted member 14196]

You are on your own for testing as nobody can tell you if they’re compatible or not. Personally I would never buy used ram for any reason and if you need more buy a kit the size that you need and scrap the old ones

 

[thx1138v2]

One of the things most people don't think about is different density DRAM modules. Some times the module manufacturer will change to a different chip that has a higher density therefore requiring fewer chips for each module.

So that's one of the things you can look at to get a better idea whether or not they are compatible. Do the different modules have chips by different manufacturers and/or the same number of chips per module?

But I agree with Mandark on this - always buy new.