A8 7650K bottleneck?

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Jordan Watts

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Nov 24, 2014
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I recently just got a new gpu (R9 380 2gb) and paired it with my A8 7650K Apu, however I am very disappointed with the results. Performance is much worse in games than my old R7 360. Is this cpu just bottlenecking the hell out of this card? Have noticed gaming the cpu usage in certain games is very high which yields very poor fps and frame drops making them no longer playable. (fallout 4, Dying Light) as an example. Wither 3 runs mostly ok with the exception being in towns/cities it drops from 55-60 fps in the wild down to low 30s

System
A8 7650K
Asus A88XM-A motherboard
8gb 1600mhz
R9 380 gpu
XFX TS 550w bronze psu
 
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performance should not be worse even if (and it is) your cpu is a bottleneck. If your CPU is capable of a frame rate X with GPU A then you CPU will still be at least as capable of frame rate X or faster assuming GPU B is faster then your original. with a bottle neck all that happens is the frame rate will go no higher (not lower) no matter how fast the GPU is.
 
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Then that's strange, what could be the issue? It doesn't make sense to me at all. I'll also add that the usual synthetic benchmarks seem to run very well just real world performance is lacking.
 
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You could try running DDU (display driver uninstaller) in safe mode and see if that helps. Also you could try to reinsert all your PSU cables, add in cards, ram, etc. It's also possible you damaged your motherboard/cpu/GPU/etc when you installed the new card. Sadly more then once in my 20+ years building computers I have fried/damaged a system during an upgrade on rare occasions. Happens to the best of us.

So check your connections, even try your old card and see if it performs the same. It's also possible you bought a defective but semi functioning card.
 
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I have used Ddu and tried different drivers etc. I'll pull all my cables and reseat everything. Shouldn't have damaged anything and I'll try my.old gpu and see if it's better or not. It may just be the same just feels like it's running slower. Also I plan to upgrade to an ATHLON X4 880k soon because it's better and on the same socket and can't afford Intel prices right now lol.

 
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Will do. Sadly I uninstalled FO4 and dying light but I'll test with Witcher 3 and post results
 
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Ok tested with old card and new card. Both tests were done on medium settings as old card can't really do high. As far as Witcher 3 goes, fps in towns were basically the same, around 30-38fps. R9 380 maybe had 1-3 fps better, but in the wilderness the r9 380 was better doing 50-68 fps and the r7 360 was doing 40-45. I'll have to re install FO4 and dying light to test those but afaik they are both poorly optimized
 
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I'm quite certain the cpu is holding me back. For the record I didn't buy this Apu I got it as a whole pc. Wouldn't have chosen it personally but I needed another pc. I know most of the frame drops also happen when the cpu cores max out which is why the gpu usage never goes full, exception to the few games I have that are well optimized.

Strange that the reviews for my cpu show benchmarks with similar or higher gpu seem to show better performance but I guess that's how it goes sometimes
 
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your APU is absolutely holding back your frame rate. But those numbers sound about right for what you have (including better frame rates just held back some by your CPU). Point is the new GPU IS doing better then your old one so far. i'll keep checking in tell you post the other results
 
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Installing FO4 as we speak. The main difference I noticed in that was on my R7 360 out in the wilderness I was getting decent fps it was only towns/cities it dropped to low fps (known issue with FO4) but with the new card it wasn't running as nicely in the wilderness which I thought was strange. The bad fps in the city I can deal with as I know what's fallout is.like just thought it odd that my fps in the wilderness had dropped.
at the time I tried different graphics options but was mostly the same. I'm sure it's most likely due to high/ max cpu usage because the Apu just isn't fast enough
 
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it is...makes me wonder if you have a bad GPU....may need new thermal paste or warrenty replacement (since i am guessing its new and still under one, should be first choice). You could try running MSI after burner and make sure your GPU is running at the proper clocks in game and not throttling using the onscreen (in game) menu. Check your boost clocks and all that while you play. might give you an idea what is going wrong.
 
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I don't think there's anything wrong with the gpu but it's possible. Also gpu usage is never high but I think that's due to the cpu bottlenecking the system. I have used clockblocker to lock the clocks at max but it doesn't change much due to the gpu not being fully utilised. Without clockblocker the core clocks are up and down but I've read that's just a normal amd thing, not much I can do about that. Also probably because gpu is not being fully utilised. In saying that Witcher 3 is the one game I've seen that keeps the gpu mostly running at max clocks sometimes a little deviation by maybe 4-5mhz but not much more than that. Gpu usage mostly hovers around 90%+ somedrops below but I think that's only at times when the cpu struggles
 
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well this trouble shoot is anything but straight forward...

you have a good tier 1 PSU, yes your CPU is a bottle neck but the behavior your describing is not, your GPU is under load...heavily utilized in witcher 3 and your clocks are boosting. hummph....I'll think on it and hopefully someone else might chime in in the mean time.
 
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FO4 is done and I am giving it a try now on the 380. I deleted all saves etc and starting from scratch and with settings on medium to compare to my old card. Will post results.

 
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So played fallout 4 on medium settings after wiping all old files and starting again. The whole way through the prologue it sat at 60 fps some slight dips into the 50s but mostly stayed at 60. Outside walking around it sits anywhere from 52-60 apart from when it loads more of the world where there are very very slight pauses and it dips into the 40s for a split second. Seems alot better now which is even more odd haha. Only strange thing to note is that with my clocks locked to max the gpu usage hovers around 50-75% although it's not affecting fps. I might try it with settings on high and see what happens

 
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On high settings the fps dropped a bit but that's to be expected into low to mid 30s outside in concord. Got it to push out a few more fps, just have to lower the shadow distance. Shadow distance on medium gets it to the 40s in the middle of concord
 
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Small update, I have run furmark on the gpu for 2 hours to test for any errors. Ran without a problem. Gpu on max load and clock speeds, temp didn't go past 73c. Also ran prime95 at the same time to give the whole system as much load as possible, cpu temp also didn't go past 59c and that overclocked to 4.1GHz. So I don't think there's any hardware faults at all.

Fallout 4 now runs at least slightly better than the old card but dying light still runs like poo, the prologue ran very well up around the 80-100fps mark but outside in the city it goes from 60 down to 30-35 fps depending in where I look. It's probably just the game mostly but I'm sure a faster cpu may help with that also as in some places all 4 cores max at 100% usage
 
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I found a manager for dying light that lets me alter some graphics settings the standard game does not, just got rid off all motion blur and depth of field effects and it's seems to work heaps better, lowest fps I saw in my testing was 45. I think my problem isn't as bad as I first thought and is a combination of the cpu and the games themselves

 
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Dude I never said anything about buying an apu I.think you need to read the post properly. I have one in a pc I bought that I am going to.upgrade. And I won't get an fx 6300 I had one once before, they are shit
 
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