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Poor FX-8350 performance (Compared to other 8350s)

Tags:
  • CPUs
  • AMD
  • Corsair
  • 8350
  • Performance
Last response: in CPUs
a b à CPUs
October 28, 2013 12:33:44 PM

So I just built a new PC and I am having some odd performance with my FX-8350.

Here are my scores in synthetics:
Geekbench 3 - 32Bit Multi-Core 10244 Single-Core 2370 (Average at stock clocks are 11000+, Single averages at 2100)
Passmark Performance Test 8.0 - 9730 (This one isn't that far off, however most people do cross 10k at 4.4GHz and above)
Cinebench R15 - 648 (Stock 8350s usually are 700 or above)
Cinebench 11.5 - 6.15 (Once again, people have no trouble getting over 700)

I have tried taking off the overclock, and my scores adjust accordingly (8300 in PCMark, 550 in CB R15). Temps run at 60C max (Prime95 for 2 hours) at stock and 68C at 4.6GHz. My CPU clock is not dropping.

My CPU voltage is staying remotely stable, this is the Revision 4 of this board, not Revision 3 which had VRM issues.

Here is my full build specs:
AMD FX-8350 @ 4.6GHz - 1.45V
Coolermaster Hyper-212 Plus Evo with an additional Coolermaster Sickleflow in push pull configuration
GigaByte 990FXA-UD3 Revision 4.0
ATI Radeon 5770 @ Stock clocks (Waiting for my 290X to get here)
Team 8x2Gb 1600MHz
Samsung 840 Evo 128Gb
Caviar Blue 1Tb 7200RPM
Corsair CX 750W
Corsair 600T

More about : poor 8350 performance compared 8350s

a b à CPUs
October 28, 2013 1:16:03 PM

Okay I have done some memory tests and my scores are at DDR-2 800MHz levels, I have swapped out my Vulcan for some Corsair Vengeance and my speeds are still half of what they should be (6500 on PC mark).

I believe this could be the cause, but now I have to figure out what is causing this.
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a c 1155 à CPUs
a c 267 À AMD
October 28, 2013 1:37:22 PM

Make sure your ram settings are correct.
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a c 210 à CPUs
a b À AMD
October 28, 2013 1:47:55 PM

logainofhades said:
Make sure your ram settings are correct.


+1 go through your BIOS and make sure your RAM timings, etc. are all correct. You may have to manually set the timings.
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a b à CPUs
October 28, 2013 1:56:27 PM

Just checked, everything is set correctly in the BIOS.

CPU-Z is reporting everything fine as well.

Okay, apparantly PCMark just doesn't like AMD's memory controllers and gives all 8350s a shit score on read and writes.

However my CPU scores are still low.
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a c 1155 à CPUs
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October 28, 2013 2:08:37 PM

60c is near the limit of that CPU. Could be thermal throttling a bit.
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a b à CPUs
October 28, 2013 2:28:49 PM

logainofhades said:
60c is near the limit of that CPU. Could be thermal throttling a bit.


Reverted to stock and left the side panel open, ran CB R15 and it never went above 41C and got a score of 533.
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a c 111 à CPUs
a b À AMD
October 28, 2013 8:09:22 PM

I did a quick google search for you. That motherboard's 3.0 revision had problems with the 8300 series cpus where the vrm was basically throttling the voltages on overclock and stock. I couldn't find any info on the 4.0 revision however, it will give you a symptom to look for. so when doing your testing check to see if there are any voltage drops
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a b à CPUs
October 28, 2013 8:41:15 PM

ethereal essence said:
I did a quick google search for you. That motherboard's 3.0 revision had problems with the 8300 series cpus where the vrm was basically throttling the voltages on overclock and stock. I couldn't find any info on the 4.0 revision however, it will give you a symptom to look for. so when doing your testing check to see if there are any voltage drops


My voltages and clocks are stable.
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a b à CPUs
October 29, 2013 2:58:17 PM

I hate to bump this again, but I have literally found nothing on this issue.
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a c 210 à CPUs
a b À AMD
October 29, 2013 4:41:36 PM

What OS? If windows 7 is it 64 bit? If it is have you downloaded the fixes for AMD CPUs?
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a b à CPUs
October 29, 2013 4:43:48 PM

8350rocks said:
What OS? If windows 7 is it 64 bit? If it is have you downloaded the fixes for AMD CPUs?

Yes it is 64Bit W7, what are these fixes you speak of?
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a b à CPUs
October 29, 2013 5:02:30 PM

I installed two hotfixes that Teksyndicate recommended, still no improvement.
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a b à CPUs
October 29, 2013 6:03:10 PM

Okay, I solved the problem.

I noticed my system process was using 15% of my CPU on idle, so I went through Process Explorer and look at the threads under the system process (right click on the system process > properties > then click the thread tab) I then saw a dll that was using up the processor (which was VIA USB 3.0 Drivers) and uninstalled them.

I am now getting 663 in CB 11.5 and 9100 on PCMark at stock.

So to anybody that is having issues with this and notices "system" using up a lot of CPU time, Download this:
http://technet.microsoft.com/en-us/sysinternals/bb89665...
and look through the threads.
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a c 111 à CPUs
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October 29, 2013 6:08:56 PM

koreanoverlord said:
Okay, I went through Process Explorer and look at the threads under the system process (right click on the system process > properties > then click the thread tab) I then saw a dll that was using up the processor (which was VIA USB 3.0 Drivers) and uninstalled them.



That was totally going to be my next suggestion. >.>

Seriously that is one hell of an obscure problem. Thanks for the tip and definitely going to remember this in the future.
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a c 1155 à CPUs
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October 30, 2013 6:30:51 AM

bouncedk said:
Why install motherboard drivers? .. Only serve as bloat - Especially if coming from the motherboard manufacture.


Why wouldn't you install the drivers? I could understand not installing utilities, but drivers are necessary and the ones from Microsoft tend to extremely suck. Some new motherboards, Microsoft doesn't even have a driver for on a fresh install.
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