Question Does Ryzen 1600AF run fast with 4 RAM modules?

[aelese33]

My system has Asus B350M Prime-A/Ryzen 1600AF/2x8GB Crucial Ballistix (Rev.E running at 3000CL15@1.2V)

Now I want to add 1 or 2 16GB module on top of it.

1. After filling 4 slots would those still run at higher speeds or will I have to slow it down to 2666 or something?

I'm asking because Crucial Basics (2666CL19 Rev. D) are ~25% cheaper than Ballistix (3000mt/s). If the CPU&MB combo can't keep up with 4 modules at 3000mt/s I see no point in paying for high speed modules.

2. Would the Crucial Basics RAM (2666CL19 Rev. D) be overclockable in this situation (looking for 3000CL15, not higher). Or should I pay the extra 50$ for Ballistix (Rev. E) to match them with the already installed modules?

 

[damian101]

My 2700x doesn't get the RAM clock higher than 3066 MHz for two dual rank modules. Don't know if that's good or bad.
Four single rank modules would only put a slightly higher load on the memory controller, but as most 16GB modules are dual rank ones I would expect the highest achievable memory clock to be closer to 2667 MHz as you would have three ranks per channel.
If you want high memory clock with 4 RAM modules don't buy dual rank.

 

[aelese33]

Both rev.d and rev.e chips are 8Gb, so I think my existing modules are single rank and the 16GB modules I'm eyeing on are both dual rank.

On one hand Rev. E might be easier on IMC so might be the better choice.

On the other hand if it won't be easy enough on IMC I might as well go with the cheaper modules. That's why I can't decide.