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Seeking advice on finding a good nforce4 (socket 939) alternative to a8n32-sli

bukvicic

Junior Member
Hi all,

I have been fighting the 2 machines in my studio trying to get them to be noise free. The problem manifests itself no matter what soundcard I use (internal realtek850, internal PCI prosumer cards, i.e. Delta 1010LT, or even external Firewire soundcards).

What I get is noises when moving mouse, dragging windows, as well as there is a constant soft crackle.

We've tried the following to fix the noise (based on the feedback from various websites):

*different soundcards (internal, PCI, firewire)
*muting various channels (even if all channels are muted, the noise is still there)
*exchanging power supply
*removing entire motherboard from the case to see if there was some ground loop inherent to the computer case
*changed motherboard from a8n-sli to a8n32-sli
*disconnecting case speaker is not an option since these cases don't have one

All this, and no change.

So, the only remaining conclusion we have at this point is that a8n-sli series motherboards are worthless. Since the system is still under warranty, our seller is considering allowing exchanging motherboard for a different comparable one.

Since the cpu is socket 939 (as well as RAM etc.), we need to stick to socket 939 boards (AM2 may be a possibility but we won't know for sure until we exhaust all 939 options).

So, here are the questions for the AMD community:

1) is anyone else experiencing these problems?

Here's how to test this out:
i)These noises may or may not be apparent via regular headset hooked-up into the machine, but they are definitely very audible and prominent when computer output is amplified through a mixer or an external speaker set.
ii)Please make sure to mute audio before moving on with the test that you don't damage your hearing and/or equipment--the noise should be there even if the sound is muted.
iii)Once you hook-up external speaker set, try cranking up sound relatively loud and see if there is still some buzzing/crackling noise.
iv)If you hear a soft hiss, this is ok, but there should be no other buzzing, crackling, and/or popping noises (either rhythmic, or associated with various operations, such as dragging windows across the screen and/or moving mouse)

2) what alternative 939 motherboard would you recommend which for sure does not have these problems (please use aforesaid test to see if they do or do not)

3) is there a good alternative chipset to nforce4 for 939 socket chips and if so which one would you recommend (again please do the aforesaid test)

4) there is ABIT AT8 32x crossfire motherboard which apparently has newer nforce chipset and is compatible with 939 chips. But, given that we have Geforce 7600GT video cards in our computers, will they be compatible with this motherboard given that it has ATI's chipset?

Last but not least, a small suggestion. Most of the current motherboard reviews skim across some of the fundamental audio features. Thus, please allow me to suggest providing a more in-depth review of motherboards (i.e. using aforesaid test with internal as well as external soundcard) in order to ascertain their audio capability and/or build quality.

I would greatly appreciate any help I can get in this matter!

Thank you very much!

Sincerely,

Ico
 
I'm no sound guru but have you tried shielding the wires connecting the speaker to the comp? The only scenario I can see with a mouse causing sound in the speakers is with a wireless mouse and sensitive speakers picking up the interference...
 
I have experienced the same sounds with my ASRock 939 Dual-SATA motherboard. It doesn?t matter if I have everything muted I still get the same sounds when moving the mouse or scrolling with the keyboard. I have used both the onboard audio and a Sound Blaster Live! 5.1 with the same results.

This problem has aggravated me for over a year and there seems to be no solution. I have tried two different sets of externally amplified speakers with no success.
 
Thank you for your reply. I am not however using wireless peripherals, so interference has nothing to do with external equipment. It appears to be motherboard-related as it manifested itself even if motherboard were isolated from the rest of the system, outside the case, with only video card hooked-up (please see aforesaid described tests).

On some other forums people have pointed out that it is a PCI bus issue (it is apparently poorly designed on the nforce4 chipset). So, I wonder if any of the crossfire chipsets would fare any better.

Best wishes,

Ico
 
Originally posted by: bukvicic
On some other forums people have pointed out that it is a PCI bus issue (it is apparently poorly designed on the nforce4 chipset). So, I wonder if any of the crossfire chipsets would fare any better.

My motherboard also uses the nForce4 chipset. I don't know if this is a coincidence or if it is part if the problem though.
 
$66 for a S939 N-Force 4 motherboard. I'd pick one up and swap out the motherboard to see if that's the problem. If it turns out not to be the mobo you can always sell the BioStar and go back to the Asus.

Edit: I've got this board with the N-Force 4 chipset and I don't get any crackle in my Audio. My old socket A board with the VIA KT333 chipset used to get noise on the onboard audio though. It wasn't too noticeable unless you had no sound coming out of the speakers and even then it was pretty quiet. Really used to notice it when wearing headphones.
 
Well, if you have nforce4 chipset, the key question is whether you have the aforesaid noise. If not, I would love to hear which motherboard model you have...

Thanks!

Ico
 
Originally posted by: AMCRambler
$66 for a S939 N-Force 4 motherboard. I'd pick one up and swap out the motherboard to see if that's the problem. If it turns out not to be the mobo you can always sell the BioStar and go back to the Asus.

Edit: I've got this board with the N-Force 4 chipset and I don't get any crackle in my Audio. My old socket A board with the VIA KT333 chipset used to get noise on the onboard audio though. It wasn't too noticeable unless you had no sound coming out of the speakers and even then it was pretty quiet. Really used to notice it when wearing headphones.

Well, I've already gone through 3 nforce4 motherboards--2 a8n32-sli and 1 a8n-sli. I think I have had enough of nforce and am hoping to try something else for a change (although there isn't much remaining out there due to ubiquity of the nforce4 in that generation of motherboards)...

The MSI board is not comparable as it doesn't have RAID and is not cooled passively. The VIA fw chipset also raises a red flag as I've had a lot of problems with those in the past (although this could be different/better, so probably I should not make generalizations so rashly).

Best wishes,

Ico

 
I have done a ton of reading and research on this issue over the past week or so.

My conclusion is that the noises that the speakers are projecting are in fact coming from the PSU as radio waves.

I have discovered from reading various articles that PSUs give off radio noise, some give off more or less than others. My PSU (Antec TP2.0 550) apparently gives off more radio noise than most PSUs.
 
Originally posted by: Pale Rider
I have done a ton of reading and research on this issue over the past week or so.

My conclusion is that the noises that the speakers are projecting are in fact coming from the PSU as radio waves.

I have discovered from reading various articles that PSUs give off radio noise, some give off more or less than others. My PSU (Antec TP2.0 550) apparently gives off more radio noise than most PSUs.

While it is true that RF will be emanated by just about anything that has a cooling sink and uses power, in this case this is not the issue, since the same motherboard was tested against 2 different PSUs from two different manufacturers and out of which one is used in the same space by other, custom-built computer and has absolutely no problems whatsoever.

Best wishes,

Ico

 
I am swapping my PSU with a known low radio noise PSU today. I will report my findings. If you read my original replies you see I have the exact same problem as you.
 
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