Big FPS drop going from my old PC to my new PC - could RAM latency cause this?

[Super Fuzz.4980]

Hello! I had a prebuilt I bought last November; I would have built my own but the parts shortage is the world is a thing, heh! Unfortunately it broke about a month ago or so; and the company gave me a newer model as a replacement. On my old PC, the performance was blistering. I was genuinely surprised to have such high FPS in a game like GW2, which I know notoriously struggles with high and consistent FPS. With my new PC, I have experienced about 50-80 less FPS consistently in the game; even though this PC has better specs that my old one. I ran some checks and did some troubleshooting, obviously did stuff like uninstall and reinstall drivers; and in the end I found I have huge RAM latency (95ns). Also it seems my RAM is stuck in gear 2 for some reason. Would this RAM issue possibly be causing this FPS loss compared to my old PC? Nothing else in my set-up has changed.

 

As a point of interest, I recently was given a work laptop which has great specs. I have found that this laptop is actually getting the same FPS as this brand new desktop...which doesn't seem right.

Edited August 7, 2021 by Super Fuzz.4980

[ArmoredVehicle.2849]

Can you please provide us some info regarding this new pc?

 

The most important parts would be: CPU, RAM Amount and Graphics Card.

 

 

[fluffypaws.2860]

Please check your temps on CPU and GPU. Thermal throttling can be the cause of this .

[Super Fuzz.4980]

17 hours ago, ArmoredVehicle.2849 said:

Can you please provide us some info regarding this new pc?

 

The most important parts would be: CPU, RAM Amount and Graphics Card.

 

 

 

Yes, old PC that gave really good FPS was: i9-10KF, NVIDIA 3080 10GB, 64GM RAM, 1TB SSD.

 

New PC: i9-11KF,  NVIDIA 3090, 128GB RAM, 2TB SSD.

 

In both cases I was using the same set-up and playing at 1440p.

 

I have found there is some sort of design feature between the motherboard used and this 11th Gen processor that locks the RAM in gear 2. It seems a poor choice to pair a higher speed RAM while not allowing manual memory controller gear ratio control. This could only be recitfied by changing the RAM I think, or even the motherboard.  My temps on the new PC are 75 C.

Edited August 8, 2021 by Super Fuzz.4980