[SOLVED] About RTX 3080's possible bottleneck. Please help!

[iljinwoo]

Hello guys, I've recently got RTX 3080.
Now, I've ran couple of games with my system, am suspecting possible bottleneck.
My system:
MSI X570 Mainboard
Ryzen 7 2700X
DDR4 RAM 8GBx2
Zotac RTX 3080 Holoblack
2560x1440P 144hz monitor

I tried to run Anthem in max settings, and I am getting only 60 FPS on freeplay, lowest of 35-40 (I didn't turn on v-sync or frame cap). It does get way better when I enter the hidden places on the map, since my computer have much less things to render but I am not sure if my CPU is the one that is stopping GPU to get to 100% performance.
Any possible reason why this is happening or advices would be appreciated.

 

[RTX 2080]

What speed is your RAM running at?

 

[iljinwoo]

What speed is your RAM running at?

2133MHz

 

[RTX 2080]

2133MHz

That's very slow for a Ryzen-powered PC and is holding back your 2700x, giving the appearance of a CPU bottleneck.

 

[iljinwoo]

That's very slow for a Ryzen-powered PC and is holding back your 2700x, giving the appearance of a CPU bottleneck.

Do you think that's lowering my FPS? If so, should I upgrade RAM to what speed?

 

[RTX 2080]

Do you think that's lowering my FPS? If so, should I upgrade RAM to what speed?

Its very possible that's what's slowing you down. You should upgrade to minimum 3200 MHz RAM; 3600 MHz would be ideal.

 

[iljinwoo]

Its very possible that's what's slowing you down. You should upgrade to minimum 3200 MHz RAM; 3600 MHz would be ideal.

Update: You were absolutely right, and I was absolutely stupid.
I completely forgot that my ram could go up to 3000 MHz, and didn't enabled extreme profile on BIOS. I never thought slow RAM speed can negatively impact in game performance life FPS.
Though its still lower than what you recommended, but surprisingly, the in-game FPS jumped 20+. Very much appreciated.. I was seriously considering to upgrade my CPU or RAM, and was starting to question myself if it was worth it to buy 3080.
Lesson learnt! Thanks, RTX 2080!

 

[RTX 2080]

Update: You were absolutely right, and I was absolutely stupid.
I completely forgot that my ram could go up to 3000 MHz, and didn't enabled extreme profile on BIOS. I never thought slow RAM speed can negatively impact in game performance life FPS.
Though its still lower than what you recommended, but surprisingly, the in-game FPS jumped 20+. Very much appreciated.. I was seriously considering to upgrade my CPU or RAM, and was starting to question myself if it was worth it to buy 3080.
Lesson learnt! Thanks, RTX 2080!

Yes, the RTX 3080 is a powerful card and needs good supporting components to get the most out of it. You'll get even better results with a faster CPU and even faster RAM, but I'm glad you were able to fix it cheaply/easily. Happy to help!

 

[iljinwoo]

Yes, the RTX 3080 is a powerful card and needs good supporting components to get the most out of it. You'll get even better results with a faster CPU and even faster RAM, but I'm glad you were able to fix it cheaply/easily. Happy to help!

Yessir. I will upgrade them eventually, but not after spending alot of bucks for 3080.. and that was huge lesson I learnt tonight. RAM is very important too!
Again, thanks for knowledge and... some money saving! I think 2700X will be good for now.

 

[Deleted member 2720853]

Reason why RAM speed matters on Ryzen is because of something called Infinity Fabric. It's AMD's CPU interconnect which connects every part of your CPU.

It is directly linked to your RAM. Your ram speed reflects the speed Infinity Fabric will run at.

So that's why faster RAM on Ryzen = better overall performance. Slower Infinity Fabric caused by slow RAM will hurt performance a lot.

Infinity Fabric's hardest job is to manage the communication between CPU and RAM, so running both at the same fast speed (1500 mhz or above -- keep in mind 1500 x 2 = 3000 mhz because DDR = double data rate) is beneficial.

Ryzen Master should show your Memory Clock & Fabric Clock:

If not, HWiNFO will do that:

A RAM speed of 3000/3200 MHz is recommended on Zen+, which you have, and on Zen 2 the recommended speed is 3600 MHz. 3200 MHz will still work just fine, the difference is not noticeable as long as RAM speed is over 3000 MHz.

 

[iljinwoo]

Reason why RAM speed matters on Ryzen is because of something called Infinity Fabric. It's AMD's CPU interconnect which connects every part of your CPU.

It is directly linked to your RAM. Your ram speed reflects the speed Infinity Fabric will run at.

So that's why faster RAM on Ryzen = better overall performance. Slower Infinity Fabric caused by slow RAM will hurt performance a lot.

Infinity Fabric's hardest job is to manage the communication between CPU and RAM, so running both at the same fast speed (1500 mhz or above -- keep in mind 1500 x 2 = 3000 mhz because DDR = double data rate) is beneficial.

Ryzen Master should show your Memory Clock & Fabric Clock:

If not, HWiNFO will do that:

A RAM speed of 3000/3200 MHz is recommended on Zen+, which you have, and on Zen 2 the recommended speed is 3600 MHz. 3200 MHz will still work just fine, the difference is not noticeable as long as RAM speed is over 3000 MHz.

Interesting! So Ryzen's speed is highly impacted by RAM speed right? In that case, does Intel CPU requires high speed RAM like AMDs?

 

[Deleted member 2720853]

Interesting! So Ryzen's speed is highly impacted by RAM speed right? In that case, does Intel CPU requires high speed RAM like AMDs?

Does not matter as much, if at all on Intel.