Lower than expected performance from i3-2120 and Radeon HD 6870

meyrn3

Honorable
Mar 25, 2012
17
0
10,510
I built this rig a couple of years ago when I was on a pretty tight budget:

i3-2120 3.3Ghz
Sapphire Radeon HD 6870
8GB of RAM
Corsair 600w PSU
Windows 7 64-Bit

I know it is becoming pretty substandard, but when I built it, I was given the build by someone on these forums. They said that it would play pretty much anything at the time on at least medium settings. The problem is, it hasn't performed well at all since day 1.

I got away from PC gaming for a while, but I am trying to pick it back up. I would really like to get to the bottom of my problem. For instance, BF3 only gets about 10 fps even on low settings. The Witcher 2 does fine until I get into any kind of fight, which is when it drops to <10 fps. Even games as light as Chivalry: Medieval Warfare drop to an unplayable fps.

I run Razer Game Booster and have even tried optimizing the settings for all my games through AMD Gaming Evolved. All of my drivers are up to date and my computer is completely virus and malware free. I just don't understand. I have seen other people with the same build or even worse running the same games just fine. I even downloaded the 3dmark demo from steam and ran that. According to the tests that it ran, my rig is performing right on par with other rigs of a similar build, but when I actually try to play a game it lags so bad that I can't play.

I also just tried looking at my CPU usage during BF3 gameplay, and it is definitely my CPU that is bottlenecking me. It is completely peaking up to 100% usage. Remember, I have no other background processes going on. While I am well aware that I should be upgrading my CPU soon, I also know that it should be performing better than this based on the research I have done.

Please, if anyone has suggestions, I would be very grateful.

Thanks
 

EdwardElric

Reputable
Apr 21, 2014
205
0
4,760
try this website http://www.techspot.com/community/topics/windows-xp-hom...

could be a cpu fan not working as it should, and the cpu slows down to stop any possible damage?
could be a problem with you OS, try to re install OS?
 

meyrn3

Honorable
Mar 25, 2012
17
0
10,510


Actually, I just looked at my CPU temp, and it is sitting at 98-99C while idle. It is actually getting quite hot! I don't understand why though. The fan on it is working fine, and it have 2 other fans on the chassis. No clogged cable clutter inside either.
 

EdwardElric

Reputable
Apr 21, 2014
205
0
4,760
It does sound like your CPU is not working as it should. I would contact Intel tech support. their is no reason why your getting such high temps at Idle, I think the time to upgrade has been pushed up in schedule :\
 

meyrn3

Honorable
Mar 25, 2012
17
0
10,510


Thanks for the suggestions. Since it is so high, I don't really want to be running it right now anyway. So I went ahead and took the heat sink off of the CPU. The stock thermal paste that came with it had dried up so much that it was basically coming off in a fine powder, and what was left was so bubbled-up and dispersed unevenly that I don't think much of the heat was actually getting to the heat sink for dispersal. Ordered some Arctic Silver 5 from Amazon. Hopefully that does the trick as it is my cheapest option. If not, I guess it will be time to pony up for that i5 I've been looking at. :)

 

EdwardElric

Reputable
Apr 21, 2014
205
0
4,760
hope the new fan does the trick. In the future if your overclocking the cpu make sure to buy a fan, since the fan bundled together with the cpu is only able to run it at the set clockspeed.
 

meyrn3

Honorable
Mar 25, 2012
17
0
10,510


This CPU isn't meant for overclocking, so I wouldn't even attempt that. I got the new thermal paste on, and it has helped drastically. The CPU stays below 75C on every game except BF3 where it still reaches 90C occasionally. I think I just need to get a better CPU heatsink or add another chassis fan or two. At least the CPU is no longer throttling itself and causing low FPS. I'm just going to stay away from CPU intensive games until I increase my cooling capacity.
 

EdwardElric

Reputable
Apr 21, 2014
205
0
4,760
when adding chasi fans, to get get correct Air flow
Make sure that the front and sides of the case are intaking air while the top and end are exhausting the air. If you get fans blowing in all sorts of different directions that might mess with your air flow and temperatures.