Replace the grille with the chrome wire style and space it away from the blades as much as possible. Reason, turbulence makes noise, the closer objects are to fan blades, more noise it makes, also sharper edges more turbulent than round edges.

BitWrangler wrote:

Replace the grille with the chrome wire style and space it away from the blades as much as possible. Reason, turbulence makes noise, the closer objects are to fan blades, more noise it makes, also sharper edges more turbulent than round edges.

Nice idea. That will be the first thing I try. I could just remove the grill all together too.

Sorry for the OT, but... What exactly do you have in a core 2 system that needs 1600w? Genuinely curious. 😀

Jade Falcon wrote:

I know the fan is rather complexly contorted, it speeds up by both load and temps. It runs for awhile after the system is shut off and so one.
This has me worried that straight up putting a different fan in it would not work without keeping it on the PSU's fan controller port. That and I really don't want to change the fan unless if I have to as it uses a 135mm fan.

Replacing the grille could certainly help with airflow. Make sure the replacement grille's added distance from the PSU case is compatible with your computer case. You could also add some rubber grommets to the mounting points for the fan to reduce vibration transfer to the case. You could make note of the fan manufacturer, look up the specs, and try to find one that will push the same CFM but with a lower dBA. The fan controller in the unit is most likely its own circuit that is independent of the actual fan - the fan should be just a 12V motor expecting a voltage. The controller just alters the voltage provided.

Ozzuneoj wrote:

Sorry for the OT, but... What exactly do you have in a core 2 system that needs 1600w? Genuinely curious. 😀

Must be something supremely silly like GTX 480s in quad SLI.

Jade Falcon wrote:

BitWrangler wrote:

Replace the grille with the chrome wire style and space it away from the blades as much as possible. Reason, turbulence makes noise, the closer objects are to fan blades, more noise it makes, also sharper edges more turbulent than round edges.

Nice idea. That will be the first thing I try. I could just remove the grill all together too.

Yeah, I would take the grill off. That should help some.

And IF the PSU is actually exhausting heat from the case, making it so that the PSU is fed fresh/cool air and have the actual case exhaust done by some other fans should also quite it down quite a bit as well.

Ozzuneoj wrote:

Sorry for the OT, but... What exactly do you have in a core 2 system that needs 1600w? Genuinely curious. 😀

A core 2 system with lots of overclocking. A qx9650, 6 10k hard drives, 4 4890s. It adds up. I could get by with 1200-1400w. But im not chancing it.
I did have 2 overclocked 450w 6990s in the system. But soon it will be 4 4890s. Or maybe ill stick with two and just volt mod them. Ether way im close to needing 1600w with etch setup and id like to keep my opinions open with a 1.6kw psu.

And thaks for the idea guys. Ill give them a shot.

Jade Falcon wrote:

A core 2 system with lots of overclocking. A qx9650, 6 10k hard drives, 4 4890s. It adds up. I could get by with 1200-1400w. But […]
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Ozzuneoj wrote:

Sorry for the OT, but... What exactly do you have in a core 2 system that needs 1600w? Genuinely curious. 😀

A core 2 system with lots of overclocking. A qx9650, 6 10k hard drives, 4 4890s. It adds up. I could get by with 1200-1400w. But im not chancing it.
I did have 2 overclocked 450w 6990s in the system. But soon it will be 4 4890s. Or maybe ill stick with two and just volt mod them. Ether way im close to needing 1600w with etch setup and id like to keep my opinions open with a 1.6kw psu.

And thaks for the idea guys. Ill give them a shot.

Seriously. A 4890 with a 25% OC (for sake of argument) Will probably draw in the order of 225w each. You can buy some aux power supplies for the video cards. Good brands are expensive, but might be a solution. Get one for each video card: http://www.meanwellusa.com/webapp/product/sea … x?prod=HRPG-300

other models are available, You can also get cheap chinese knockoffs for 1/2 the price. I personally use a 24V one for my monitor. Runs like a champ and the fan, while not silent, only powers up depending on load. cheap chinese ones miht not do this.

Hey Jade -

So just to add a bit more to this, it looks like that G1600 has been a bit of a dud for a large number of people based on various reviews. Hope it proves better for you.

I also noticed during one of the reviews that the fan is an ADN512UB-90. Typical ADDA fan (those fans get used a lot by OEMs). The stats on it, if my source is correct, are

Brand : ADDA Fan Model : ADN512UB-A90 Noise : 42.8dBA Airflow : 99.736CFM […]
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Brand : ADDA
Fan Model : ADN512UB-A90
Noise : 42.8dBA
Airflow : 99.736CFM

I mean I suppose that loudness would be for full speed, but 42.8 isn't exactly quiet. But then I don't really know how quiet you can get a fan that is supposedly going to push a claimed 100 CFM in order to cool a fairly loaded percentage of a 1600 watt PSU.

luckybob's suggestion is a possible path to take, but I don't think I would run a system on that PSU - I am seeing people using the words "pop" and "smoke."

they seemed to perform well out of the box: http://www.jonnyguru.com/modules.php?name=NDR … =Story&reid=283

This is a consumer grade item doing a absolutely massive amount of work. Things going *pop* does not surprise me.

Yeah 40+ bda is loud. But the fan has yet to get that loud. its more like 25-30bda under a load right now. I'd like to get it around 15-20dba.

I thought about a second psu, but I don't have the room for it in the case and I don't want to put them on the outside of the case.

As for the quality of the PSU, its not that bad. Its hard to make a good 1600w PSU, most are ether very costly or like the g1600. Most 1500/1600w PSU cost 400$ or more. The g1600 can be bought for around 225$ So I'm not amazed if others have problems with it.
However most reviews I seen from trust worthily places claim its a good psu for the money, just more mid range when compared to other 1500/1600w units.

EDIT:
OK so my plans are.
1: Remove the fan grill.
2: Rubber mounts on the fan.
3: Rubber gasket for the PSU.
4: Find a different fan. That will not be simple if a 140mm dose not fit. But if a 140mm will fit I'll put something like a lower RPM noctua PPC fan in it. That would drop about 10dba when the fan is at full speed wile having more CFM.

Also what about removing the plastic piece they put on psu fans.
See photos.
http://images.bit-tech.net/content_images/200 … eview/fan-8.jpg
https://www.hardwareheaven.com/reviewimages/c … 00m-psu_fan.jpg

I'm sure they put them there for a reason, maybe to direct air flow? I'm not sure if this psu has one but if it does I'm sure removing it would help shut it up.

EDIT:2
Yes is dose
See photo
https://www.kitguru.net/wp-content/uploads/20 … 8/DSCF22551.jpg

What about one of those Noctua low noise adapters? Might have to do some soldering or other modding to get it between the fan and power supply PCB.

clueless1 wrote:

What about one of those Noctua low noise adapters? Might have to do some soldering or other modding to get it between the fan and power supply PCB.

I thought about that, but that would just lower the RPM of the fan. Witch could make it over heat under a load. Otherwise it would work grate.

Removing the grill made a big difference. still abit loud under a load. But better.