Question Ryzen 7 2700x + 4x8 gb 3000 Mhz RAM

[Algalorrd]

Hi there!
I've built a rig with the current specs:

ASUS ROG Strix B450-F Gaming (with the most recent BIOS)
Ryzen 7 2700x (working with default clock)
MSi Armor RTX 2070
2x8 G.Skill Trident Z 3000 mhz (working with that clock)

And here is my doubt: Recently I got the opportunity to purchase another two G.Skill Trident Z 3000 Mhz DIMMS. People may say it isn't necessery nowadays to have 32 gb of RAM unless you do some editing stuff which btw is my case.
Anyway, I've seen some people claming that 4x8 gb of RAM isn't a good idea. That perhaps I may not achieve those 3000 mhz. To be honest I've seen some people who apperently managed to achieve 3000 mhz with 4x8.
Help! Should I buy those 2x8? They are offering me for a very good price which explains why I'm so tempted.

 

[DMAN999]

I also own an Asus ROG Strix B450-F Gaming MB and I have 16GB of G.SKILL 3200 MHz RAM (a 2x8 GB kit).
I personally would not recommend that you add 2 more 8 GB sticks.
My reasoning is that 2 sticks of RAM are far less taxing on the memory controller so if you run 4 sticks it will be that much harder to get them to run at their rated speeds than it is with just 2 sticks of RAM.
I have had my G.Skill TridentZ 3200 C16 RAM stable at 3400 MHz with tighter timings and I currently have them OC'd to 3333 MHz with my Ryzen 5 2600 OC'd to 4 GHz.
If I ever upgrade to 32 GBs of RAM I will buy a 2X16GB kit to ensure that they will run at their max rated speed.
Also Ryzen based rigs perform much better with faster RAM so you might want to try OC'ing you current RAM to 3200 MHz.

 

[Algalorrd]

I also own an Asus ROG Strix B450-F Gaming MB and I have 16GB of G.SKILL 3200 MHz RAM (a 2x8 GB kit).
I personally would not recommend that you add 2 more 8 GB sticks.
My reasoning is that 2 sticks of RAM are far less taxing on the memory controller so if you run 4 sticks it will be that much harder to get them to run at their rated speeds than it is with just 2 sticks of RAM.
I have had my G.Skill TridentZ 3200 C16 RAM stable at 3400 MHz with tighter timings and I currently have them OC'd to 3333 MHz with my Ryzen 5 2600 OC'd to 4 GHz.
If I ever upgrade to 32 GBs of RAM I will buy a 2X16GB kit to ensure that they will run at their max rated speed.
Also Ryzen based rigs perform much better with faster RAM so you might want to try OC'ing you current RAM to 3200 MHz.

Thanks for your reply! That wasn't the answer I was expecting but I'm thankful anyway. I just don't want to waste my money. Do you have any tutorial on how to set your RAM to 3333 Mhz? I had a few headaches setting mine to 3000 Mhz.
And I still want the opinion of other people on this subject. I saw someone in this same forum with the G.Skill Trident Z 4x8 but his concerns were the RAM temperatures and he did not give any further details =\

 

[DMAN999]

I used the Ryzen DRAM Calculator to OC my RAM:

Info - Announcing DRAM Calculator for Ryzen with an Integrated Benchmark

1usmus just released a new version of the DRAM Calculator: https://www.techpowerup.com/forums/threads/announcing-dram-calculator-for-ryzen-v1-5-0-with-an-integrated-benchmark.255229/ Version 1.70: https://www.techpowerup.com/download/ryzen-dram-calculator/ Added functionality to read current...

forums.tomshardware.com

Download the apps in that thread then post a screen shot (upload the Pic to imgur and paste the link here) of the Read results from the Taiphoon Burner app here and we can help you OC your RAM properly.

And just to be clear our MB does support 4x8 GB of RAM but getting them to run at 3000 or 3200 MHz can be challenging.
From everything I have read if you use 4 sticks of RAM on our MB you will most likely only be able to get them stable at around 2400 or so MHz.