Need help troubleshooting seriously bad under performance

evangough99

Honorable
Jan 7, 2014
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10,510
I've been using a very bad setup for the last 2 years, to keep it short and sweet I'll just list the CPU and GPU

AMD A8-5500 APU
AMD HD Radeon 7450

These are 2 terrible components without a doubt so I decided I would take the first step and upgrade the GPU to a XFX AMD Radeon HD 7750. I bought this off of a friend who was using this card 2 days ago and was having no trouble, I can trust this person as I know him in real life and he's in my IT class in college. After installing the new GPU I uninstalled all other GPU drivers and re-installed them. A game I play frequently is CS:GO. I began testing this new card, I set my resolution to 800 x 600 stretched (I used to have to play that) and I was getting FPS as low as 60. On my old and considerably worse card I was always above 70 fps and most of the time floating around the 90-100 mark. I switched to 1920 x 1080 (native resolution) and I was still floating around the 60 fps mark but I was going into the 70s and on average it seemed like I was getting more on 1920 x 1080 than 800 x 600 and that just doesn't make any sense to me at all. I reinstalled steam thinking that there was some sort of problem there but still, the problem continues. I've checked the specs for this card compared to my old one and it is a much better card in terms of everything and I just don't know what the problem is. I just can't understand why this card is underperforming so much and any help would really really be appreciated.

**It's not my PSU, I bought a Corsair 750W one back in January for future proofing.
 
Solution

maxalge

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do you monitor temps?
 
Your cpu is relatively weak.
Many games, including CSgo I think, are cpu limited and largely single threaded.
I do not know if you can overclock that cpu for more performance.

A back handed way to test this theory would be to
Limit your cpu, in windows power management, limit the maximum cpu% to something like 80%.
Go to control panel/power options/change plan settings/change advanced power settings/processor power management/maximum processor state/
This will simulate what a lack of cpu power will do.
Conversely what a 20% improvement in core speed might do.
 

evangough99

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Jan 7, 2014
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10,510


This is where I think a problem lies. My CPU has a temperature of 120oC and my motherboard has a temp of 90oC, whilst my GPU and HDD have temps of 20-30oC. I read that it could be the sensors on my motherboard being broken but I don't know how that would of happened and it never used to shows temps like that.
 

evangough99

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Jan 7, 2014
21
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10,510


I know that CS is very dependant on the CPU but I'm getting lower FPS in the game after installing this better card than when I had a worse one, I didn't touch the CPU so I should be getting the same frame rates atleast. This is a very confusing situation for me aha
 

maxalge

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120 degrees C to too hot, needs to be max 60's

you are temp throttling and this is causing your lower fps

get some new thermal compound and re-seat the cpu cooler, also make sure the cpu fans are spinning



are your case fan's spinning?
 
Solution

evangough99

Honorable
Jan 7, 2014
21
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10,510


I'll mark this as the answer and I'll keep updating you about whether it is fixed or not, thanks.
 

evangough99

Honorable
Jan 7, 2014
21
0
10,510


Thank you for telling me to check to see whether my cpu fan was working or not, I thought my sensors on my motherboard were broken and I didn't even think about checking to see if they were spinning. Turns out a wire was just barely blocking the fan and made it not spin. Thanks!
 

maxalge

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hopefully your cpu temps get back under control

glad it got sorted