FPS drops in games and GPU acts weird

edwardchristian97

Commendable
Feb 3, 2017
9
0
1,510
Hello, I recently updated my PC except the GPU, because I still use the GPU that I own for 2 years and a half. My configuration looks like this:

CPU: Intel Core i7 6700k, 4.0 GHz
RAM: Corsair Vengeance 8 GB DDR4, 2133 MHz
Motherboard: Asus H110M-C
GPU: AMD R9 270x MSI 2GB, GDDR5
PSU: 500W
Windows 10, 64 bit

All of the components are new, except the GPU. I also bought a FULL HD monitor (LG 24MP48HQ). My problem is this: for example, when I play GTA V, I play it on Very High settings, MSAA 2X, 1080p. My GPU's temp is around 90-100 degrees Celsius with 99% usage and the CPU is 60-65 degrees Celsius and 30-35% usage. Game runs perfectly on 60 FPS but after a couple of minutes the FPS drops heavily on 30-35 and also my GPU's temp drops to 60-65 degrees Celsius, but its usage is still 99%. This FPS drop happened also on FIFA 16 and AC Syndicate. So, the game runs perfectly but the FPS drops suddenly and my GPU's temp also drops and that made me think that the GPU is not performing at its best.

Maybe you could tell me what the problem might be?
 
Solution
I'm not talking about the CPU, PSU or gpu fans. I'm talking about CASE fans. You need to install one in the front and one in the back so you have both positive and negative air pressure. The front intake fan will blow cool air onto your graphics card, and the back fan will exhaust all the heat generated by your cpu and gpu. I'm surprised your running such high end equipment in a case like that. That is the reason why your graphics card is thermally throttling. Those two fans under the graphics card blow air up into the card and out the sides up into the rest of your case. If there are no fans to direct heat inside the case so you're essentially recycling the hot air inside the case over and over again.

Lutfij

Titan
Moderator
Can you be specific about the PSU's make and model? With your new components you've reinstalled your OS and the corresponding drivers for your system right? Which drivers for your GPU are you on? You didn't state whether you own an SSD/HDD and if they were migrated from your older system. Speaking of older system, what were your former system's specs?
 
It sounds like thermal throttling to me. Your gpu usage stays at 100%, but I bet your clock speed is lowering to accommodate for the high gpu temperature, which explains the drop in FPS. You'd be able to confirm this is msi afterburner. What case and fan setup do you have? You did an excellent job at describing your issue. If only more people post their problems with this amount detail on the forum.
 

edwardchristian97

Commendable
Feb 3, 2017
9
0
1,510
The PSU is a Spacer 500W and the case is a Spacer Galaxy Black. I own a 256 GB SSD. I also installed a new version of Windows 10 because I bought the entire PC from someone and I only used my GPU on it, so no old components were used on this PC besides the GPU. My GPU is on the latest Crimson driver. Maybe the problem is thermal throttling...
 

edwardchristian97

Commendable
Feb 3, 2017
9
0
1,510

edwardchristian97

Commendable
Feb 3, 2017
9
0
1,510


Before buying the computer I checked some websites in which I entered my components and it said that a 400-500W PSU will be ok for my PC...
 

How many case fans do you have?
Can you send me a link of your case please?

 

edwardchristian97

Commendable
Feb 3, 2017
9
0
1,510


http://www.pcgarage.ro/carcase/spacer/galaxy-500w-black/
 


How many fans do you have in that case?
 

edwardchristian97

Commendable
Feb 3, 2017
9
0
1,510


Besides the fans on the CPU, PSU and GPU, looks like I don't have any...
 
I'm not talking about the CPU, PSU or gpu fans. I'm talking about CASE fans. You need to install one in the front and one in the back so you have both positive and negative air pressure. The front intake fan will blow cool air onto your graphics card, and the back fan will exhaust all the heat generated by your cpu and gpu. I'm surprised your running such high end equipment in a case like that. That is the reason why your graphics card is thermally throttling. Those two fans under the graphics card blow air up into the card and out the sides up into the rest of your case. If there are no fans to direct heat inside the case so you're essentially recycling the hot air inside the case over and over again.
 
Solution

edwardchristian97

Commendable
Feb 3, 2017
9
0
1,510


Thank you so much, everything makes sense now. I'll do what you suggested!

 


Also see if you can position the hard drive in the case so the drive doesn't obstruct intake fan air flow. This way the intake fan can blow air directly under the gpu fans.