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Strange high pitched noise and performance drop

post #1 of 14
Thread Starter 
Hi Folks,

I have just returned to PC's from the world of shiny and expensive. I built a system with an AMD FX 8320, 8gb Ram (1333mhz), Gigabyte GA-970A-DS3 board and a pretty basic graphics card. I threw away the stock cooler because it was soooooo noisy I couldn't hear myself think and replaced it with an Arctic Freezer 7 Pro Rev 2.
All is well, or so I thought. If I load the processor up, initally encoding mp4's and then later using OCCT, it runs nice and quickly for the first minute or so but then I get a high pitched, electrical type noise comming the the computer and the FPS drops through the floor (like 200fps down to 30fps). The only other change I can observe is that the temperature appears to drop off at the same time.
I have run OCCT many times and every time it does the same thing. The max temp it is reaching is about 55 degrees (as reported by OCCT) and all the voltages seem stable.
I have updated my BIOS to the latest version and still no luck. At the moment all the settings are stock, I have not attempted to overclock it (although that said it seems to overclock itself according to OCCT).
Interestingly I am now on my second installation of windows 7 ultimate. The first crashed and died, but before it did it was running faultlessly; I encoded a whole bunch of TV episodes from DVD at almost 500fps without any problems.

As I said, I am recently retunred to PC's so please be paitent if I don't understand things.
Thanks

Chris
post #2 of 14
OK so,

Go and download prime95 and coretemp to start with, you can google those.

Run prime 95 and check your temps, see if they hit 60 - 70c if it does then stop it otherwise see if you get the high pitch noise.

Next download furmark, again google is your friend, download that and run that on a torture test of your GPU to see how hot that is getting.

Keep listening for the high pitch whine so we can see what's causing it.

What PSU do you have as well, it doesn't sound somewhat like capacitor whine.

Comps
post #3 of 14
Thread Starter 
Ok, will do. Just off to work so I will post results later.
Thanks.
post #4 of 14
Well I'll be on my way home in an hour or two because of the time difference, but there are plenty of people here would can help you with the results biggrin.gif

I'll be back on tomorrow morning though

Comps
post #5 of 14
Thread Starter 
Hi,

Ok, time for some results.

Running Prime95 I get the high pitched noise and accosiated slowdown and temp drop after about 2 minutes and with the CPU never going over 56 degrees according to CoreTemp. Interestingly, when running properly the cpu cores are running at 201 x 17.5MHz going up to 18.5 every now and again for a moment or so, but when it makes the noise the all the cores are running at 201 x 18.5Mhz (effectivly overclocking by 5%)

Running FurMark the GPU gets up to 70 degrees then holds stable with no strange noises.


I am going to try booting into Linux with a live CD and trying some tests there as well......

ideas?
post #6 of 14
;o one of them caps bout to go nuclear. run!!!! got another board/system to drop the chip in to test it? if you're inside 30 days for board/processor rma em. next up info on psu please.
BBW
(9 items)
 
  
CPUMotherboardGraphicsRAM
Bulldozer FX - 8120 Gigabyte GA-990FXA-UD3 Gigabyte Radeon HD 6850 Samsung's Best kept secret 
Hard DriveCoolingOSPower
Mushkin Enhanced Chronos Deluxe Spire TME 3 Windows 7 Ultimate 64 bit Corsair HX-850 
Case
Antec 1200 
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BBW
(9 items)
 
  
CPUMotherboardGraphicsRAM
Bulldozer FX - 8120 Gigabyte GA-990FXA-UD3 Gigabyte Radeon HD 6850 Samsung's Best kept secret 
Hard DriveCoolingOSPower
Mushkin Enhanced Chronos Deluxe Spire TME 3 Windows 7 Ultimate 64 bit Corsair HX-850 
Case
Antec 1200 
  hide details  
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post #7 of 14
Thread Starter 
PSU is a Cooler Master 500w unit. RS-500-PCAP-13.

I tried turning off Turbo Boost in the BIOS to stop the thing from running at a multiplier greater than 17,5 but it still started making weird noises.

Unfortunatly I don't have another MB to try it in.
post #8 of 14
so none of your cores are keeling over when you run p95 or occt? And there are some other features in bios you'd need to disable to eliminate any sort of clock adjustment off the table. For cases like this I empty my poster container, put it to my ear and put the other end inside case to pinpoint. No I'm not an old man it's just a lazy way of filtering out all the other noises.......


EDIT before even posting

http://www.gigabyte.com/support-downloads/cpu-support-popup.aspx?pid=4122 Seems you made a derp tongue.gif
BBW
(9 items)
 
  
CPUMotherboardGraphicsRAM
Bulldozer FX - 8120 Gigabyte GA-990FXA-UD3 Gigabyte Radeon HD 6850 Samsung's Best kept secret 
Hard DriveCoolingOSPower
Mushkin Enhanced Chronos Deluxe Spire TME 3 Windows 7 Ultimate 64 bit Corsair HX-850 
Case
Antec 1200 
  hide details  
Reply
BBW
(9 items)
 
  
CPUMotherboardGraphicsRAM
Bulldozer FX - 8120 Gigabyte GA-990FXA-UD3 Gigabyte Radeon HD 6850 Samsung's Best kept secret 
Hard DriveCoolingOSPower
Mushkin Enhanced Chronos Deluxe Spire TME 3 Windows 7 Ultimate 64 bit Corsair HX-850 
Case
Antec 1200 
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Reply
post #9 of 14
Thread Starter 
Well don't I feel like a twerp. doh.gif
Moral of this story: Even if eBuyer.com says the two items are bought together it doen't mean they are compatible.

What is strange then is that it works AT ALL. Some forum posts I have read say that the new firmware (F6) supports the processor but I can't get conrimation of this from Gigabyte. I am running software version f6

What's the bet that they won't let me return it? I expect they will say it has been used incorrectly and therefor invalidated the warrentee.
post #10 of 14
Quote:
Originally Posted by Cryptopher View Post

Well don't I feel like a twerp. doh.gif
Moral of this story: Even if eBuyer.com says the two items are bought together it doen't mean they are compatible.

What is strange then is that it works AT ALL. Some forum posts I have read say that the new firmware (F6) supports the processor but I can't get conrimation of this from Gigabyte. I am running software version f6

What's the bet that they won't let me return it? I expect they will say it has been used incorrectly and therefor invalidated the warrentee.

If you're inside 30 days just return as defective, normally won't give you a problem or product isn't what you expected. If you're outside 30 days you could try warranty return, on the chip saying it's having strange frequency fluctuations and temperatures. If neither of those then yea you're screwed.
BBW
(9 items)
 
  
CPUMotherboardGraphicsRAM
Bulldozer FX - 8120 Gigabyte GA-990FXA-UD3 Gigabyte Radeon HD 6850 Samsung's Best kept secret 
Hard DriveCoolingOSPower
Mushkin Enhanced Chronos Deluxe Spire TME 3 Windows 7 Ultimate 64 bit Corsair HX-850 
Case
Antec 1200 
  hide details  
Reply
BBW
(9 items)
 
  
CPUMotherboardGraphicsRAM
Bulldozer FX - 8120 Gigabyte GA-990FXA-UD3 Gigabyte Radeon HD 6850 Samsung's Best kept secret 
Hard DriveCoolingOSPower
Mushkin Enhanced Chronos Deluxe Spire TME 3 Windows 7 Ultimate 64 bit Corsair HX-850 
Case
Antec 1200 
  hide details  
Reply
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