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Loud PSU - XFX Core Edition 650

post #1 of 8
Thread Starter 
Hey folks,

Having a bit of trouble with the new PSU I picked up the other day.

After transplanting my PC in to a new case (corsair 230T) and installing a water cooling unit (corsair H75), my old PSU was crazy loud and making some odd noises, so I decided to replace it.

I installed the XFX last night, and while it's quieter, noise levels are still higher than what I expected (https://www.youtube.com/watch?v=5e0Lh0pszpo).

That video was taken just after boot, running windows 8. CPU temps are sitting around 35 - 40. Fans for the H75 are intake, two case fans on the front of the case are hooked up (I assume they're intake too), and the PSU fan is pointing down.

Main hardware for my machine :

Sabertooth x58 motherboard
i7-950 chip
corsair h75 water cooling
nvidia gtx 770
4GB corsair vengeance RAM
1 x SSD
2 x 720RPM SATA (2TB & 1TB)

Any idea what the problem could be - if there even is one?

Thanks for your help!
post #2 of 8
First you need to actually isolate what's causing the high sound. Only then can we help you on reducing it's noise. smile.gif
At a guess, it could be your PSU again. Try running it with the fan face up. Face down can make PSU's run much louder.
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X79-GCN
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post #3 of 8
Thread Starter 
Hey Bradley, thanks for the quick response.

It's definitely one of the PSU fans that's creating the noise; audio quality in that video isn't particularly good, just wanted to demonstrate the volume (not that you any frame of reference in that video - but I would guess it's around 30 decibels).

I'll try flipping the PSU around and see if that makes any difference; that's how I was running my old PSU (which was much quieter before the transplant), but I read lots of bits and pieces on the interweb of lies telling me that's not such a good idea.

Cheers!
Edited by Orangeatang - 4/17/14 at 4:10am
post #4 of 8
Yup, give it a try and hopefully it should be more quiet. Let me know how you get on.
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X79-GCN
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post #5 of 8
Quote:
Originally Posted by Orangeatang View Post

Hey Bradley, thanks for the quick response.

It's definitely one of the PSU fans that's creating the noise; audio quality in that video isn't particularly good, just wanted to demonstrate the volume (not that you any frame of reference in that video - but I would guess it's around 30 decibels).

I'll try flipping the PSU around and see if that makes any difference; that's how I was running my old PSU (which was much quieter before the transplant), but I read lots of bits and pieces on the interweb of lies telling me that's not such a good idea.

Cheers!

Not to state the obvious, but are you certain it's the PSU? Have you disabled all other fans? (Can also check it's the PSU fan noise by elevating the case more, so the fan intake is further off the ground/desk so you can better determine)

I have the exact same PSU, and have used many of them in builds (including the 550w) and I've never heard them to be anywhere near that loud.

The only thing that'd make a PSU use full fan speed is heat, and from heat either lack of air circulation or fully stressed (pulling near-capacity wattage/amperage).

Modern day cases with the PSU at the bottom are typically designed so the PSU is downward facing, this ensures cool air (from under the PSU) is driven into it, although you can of course mount it with the fan facing upwards, to act as another case exhaust (heat rises, but every little helps), or because the fan is not intaking as much air when downward due to obstructions or exterior dust problems, most run them downward-facing, ensuring there is nothing blocking the airflow path (deep pile carpet etc.).
These units have a 135mm ADDA ball-bearing fan, unless it's a problem that's singled out with this particular unit/fan, these fans are solid and run pretty quiet.

What was your previous PSU? What kind of overclocks and temps are you running in your system? While your GPU/CPU combo shouldn't be anywhere near pushing the PSU, I'm just asking due to your last unit making noises also.
Just trying to single out things is all.
 
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Exia R2
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l Intel® Core™ i7-5820K l l MSI X99A SLI Krait Edition l l MSI GTX 980Ti Gaming 6G l l Corsair Dominator® Platinum (4x4GB) DDR4 3Ghz l 
Hard DriveHard DriveHard DriveHard Drive
| Samsung PM951 M.2 PCI-e NVMe 512GB | l Samsung 840 Evo 500GB l l Toshiba X300 4TB 128MB Cache l l Toshiba MD04ACA400 4TB l 
Hard DriveHard DriveOptical DriveCooling
l Toshiba DT01ACA300 3TB (x3) l l Samsung F3 1TB l l Pioneer BDR-209EBK l l NZXT Kraken X61 (2x Noctua NF-A14-2000-IP67) l 
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l Phobya MaxGuide 6 Controller l l Windows 7 x64 Customised. l l Acer Predator XB240H 144Hz G-Sync l l LG M2380D 1080p l  
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l Logitech G19s l  l EVGA SuperNOVA G2 850w l l CM Storm Stryker™ l  l Logitech G502 l  
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l Samsung 840 Evo 500GB l l Samsung F3 1TB X2 l l Maxtor DiamondMax 750GB 32MB l l Samsung F4 2TB l 
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l Toshiba DT01ACA300 x2 l l Pioneer BDR-209EBK l l Scythe Kama Angle Rev.B (With Scythe GT 1850R... l 4x120mm, 2x140mm Case Fans (CM + Scythe) l 
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G3258 @4Ghz MSI Z97I Gaming AC MSI GTX 460 Crucial Ballistix Sport 1600MHz 8GB 
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post #6 of 8
Thread Starter 
Quote:
Originally Posted by EvoBeardy View Post

Not to state the obvious, but are you certain it's the PSU? Have you disabled all other fans? (Can also check it's the PSU fan noise by elevating the case more, so the fan intake is further off the ground/desk so you can better determine)
Hey EvoBeardy - yeah I'm almost certain it's the PSU. The fans on the Corsair H75 are virtually silent, same with the case fans, and you can't hear the 770 when the system is essentially idle. I think that's all of them accounted for aside from the PSU. I haven't tried elevating the case yet, but it's on my list of things to try. I do have heated floor tiles which could be stressing it out, but it wasn't a problem with my old PSU - a CoolerMaster 750 with the fan pointing up in to the case.
Quote:
Originally Posted by EvoBeardy View Post

I have the exact same PSU, and have used many of them in builds (including the 550w) and I've never heard them to be anywhere near that loud.
It seems like a really good PSU, so I assume there's something wrong with my setup - the noise level seems strange.
Quote:
Originally Posted by EvoBeardy View Post

What was your previous PSU? What kind of overclocks and temps are you running in your system? While your GPU/CPU combo shouldn't be anywhere near pushing the PSU, I'm just asking due to your last unit making noises also.
Just trying to single out things is all.
Old one was a CoolerMaster 750. No overclocks in the GPU or CPU. Not sure what the temperature readings on my GPU are, but the CPU doesn't get above 40 on idle. The CoolerMaster was pretty quiet in the old case, the main difference being the direction of the air intake.

Thanks for your help!
post #7 of 8
Thread Starter 
I just tried elevating the PC.

Running idle the volume of the PSU is cut down considerably, it's still audible (just) but it's far from obnoxious.

I tried a round of Titan Fall to test things out with a high load on CPU & GPU - the noise does ramp up considerably then, but no where near as loud as it was before.

Would it be worth flipping the PSU so the intake fan is facing up in to the case?
post #8 of 8
Thread Starter 
Allrighty,

I tried flipping the PSU over, and it runs much quieter (practically silent) in idle and when the CPU/GPU are doing their thing.

I guess having the fan pointing up in to the case must add to the overall temperature inside the case though, as the CPU fans start to really ramp up after about 10 minutes of game time.

Seems like I get a lower average volume with the case elevated and the PSU pointing down.

Thanks for all your help folks!
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