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2 Bronze

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

Hi there!

I came across this thread purely by accident and I'm so glad that I did.

I have a XPS-8930 SE with that small 92mm exhaust fan at the top of the unit and would like to have more air circulate in the case to lower the overall temps. I see that you have installed a Noctua NF-S12A FLX 3 pin fan.

However, the stock fan is a 92mm Dell VM20H, that is a 4 pin fan.

So what exactly is the difference between the two fans from a pin perspective? Must be important.

I would also like to get the larger Dell Fan Bracket for the Noctua, but all I can find is a used Dell 120 mm fan and bracket as one assembly on EB. Is there a way to get the plate new? I see the Dell part number on your 120mm plate but can't make it out. Perhaps you can share that Dell plate part number.

Lastly, is the hole on the top of the 8930 going to accept the 120mm or do I have to cut it?

Many thanks for your great thread(s) and I look forward to your detailed reply.

Cheers! πŸ™‚

BTW - Noctua does offer a 4 pin fan:

NF-S12A PWM, Premium Quiet Fan, 4-Pin (120mm, Brown) but it may be quite different.

 

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5 Tungsten

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

@Compumind    So what exactly is the difference between the two fans from a pin perspective?

The 4-pin fans allow for Pulse Width Modulation; control of the fan speed through software or computer hardware. The 3-pin fans will run at a constant speed. For me, since the Noctua fans I used were very quiet at their top speed of 1200 rpm, I saw no reason slow them down through modulation.

I would also like to get the larger Dell Fan Bracket for the Noctua

There are 2 fan brackets from the Aurora R5/6/7 that will work on the XPS 8930, as the cases are the same. The part number is the same for both brackets; 7M0F5 and they can be purchased on the big auction site  Aurora 7M0F5   You will probably have to purchase the fan also; just replace it with the Noctua. Make certain the bracket is included in your purchase, and not just the fan. The brackets are for the top exhaust position and the lower front intake position.

Lastly, is the hole on the top of the 8930 going to accept the 120mm or do I have to cut it?

No cutting required; slips into place with one screw. The bracket is the same size as the one with your 92mm fan, and mounts exactly the same way. (click photo to embiggen)

IMG_3738.JPG

 

Note: if you have the blower fan/heatsink like the one I had, it will need to be removed to access the fan and fan power header, so you will also need some thermal compound for reinstalling the heatsink.

This is the lower front intake fan bracket.

IMG_3805.JPG

 

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2 Bronze

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

Hi!

Thanks for your responses!

Are you saying that the lower front fan should be replaced as well with the same components of the top fan?

If so, I would need to order two sets, correct?

Is the lower front fan hole enlarged to accept the 120mm fan?

Seems that the lower front uses a different bracket? If so, what do I need to order (specify)?

Can I get away with just the top exhaust fan or would that inhibit airflow and make noise?

Need just a bit of clarification. Thanks again for your prompt reply!

πŸ™‚

 

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5 Tungsten

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

@Compumind   Can I get away with just the top exhaust fan? Need just a bit of clarification.

Post some photos of the inside of your computer, so we can see what your setup looks like. The photos will have to be moderator approved before anyone else can see them, which can take some time.

The most important fan to replace in my situation was the top exhaust fan. What CPU, graphics card and PSU wattage do you have? The two fan brackets are different, as pictured above; one metal, one black plastic.

If you only want to replace the top exhaust fan, you would only need the metal fan bracket, and some thermal compound. If you were considering upgrading your PSU, now would be the time to do that.

I can be more specific after you post your components and some photos.

EDIT: the XPS 8930 case already has the mounting notches for the Aurora R5/6/7 lower front intake fan bracket. It simply snaps into place.

IMG_3829.JPG

 

 

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2 Bronze

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

Hi again...

Unmodified system, with the ECO cpu fan change just like your pics.

However, I do have one question for you:

If I just replace the Top Exhaust Fan with the 4 pin PWM Noctua 120mm:

Will it throw the airflow out of balance and create noise?

I would leave all the other fans alone.

What do you think?

Thanks again and Happy Holidays! πŸ™‚

 

 

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5 Tungsten

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

@Compumind   Unmodified system . . .

Not much help . . . 95 watt CPU or 65 watt CPU . . . full length graphics card or short card . . . blower style GPU cooler or triple fan . . . these make a difference in the amount of heat generated inside the case and the internal air flow dynamics (or lack thereof)

Will it throw the airflow out of balance and create noise?

No, nothing will be thrown out of balance. The amount of noise will depend on the rpm of the fan you install. The Noctua 120mm PWM fans range from a quiet 700 rpm @ 6.8 dB to Industrial 3000 rpm @ 43.5 dB 😱   I would recommend 1200 rpm to 1500 rpm for your top exhaust fan (but I still don't know your specific components)

Noctua Fans 

I would leave all the other fans alone.

What other case fans do you have besides the top exhaust fan?? (if you posted photos I would not have to ask)

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Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

I would just make sure the top fan is 120mm and just put a 120mm fan in the lower rear mounted with double sided thick tape and no special brackets (I don't know why everyone uses those Noctua fans) but if it spins more than 1000 rpm it will start getting noisy. Don't use screws to mount fans to metal because it will accentuate the vibration noise. Make sure you block ALL the holes etc around that new 100mm bottom rear fan so ALL the air will come from outside and not just recirculate hot air.

Dell XPS 8920 silver edition
7th gen i7 Intel CPU
Samsung 850 evo SSD for boot
Added front fan
16gb of memory
AMD video/graphic card
I buy a new Dell every 4 years for the last 25 years

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5 Tungsten

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

@Compumind    If I just replace the Top Exhaust Fan with the 4 pin PWM Noctua 120mm . . .

Have you made any progress on these modifications?  If you are still in the planning stage, I may be able to help you out with some of those parts, if you are located somewhere in the lower 48 states.

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2 Bronze

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

@Dell630i 

Hi!

Thanks for your reply...

I have the Dell  7M0F5 AVC 120mm fan - new!

However, I need the Dell part number for the 120mm Dell metal Fan Bracket also called the Mount Plate.

I have a stamped part number, but there is a Dell code 4-5 characters, which would be most helpful.

The stamped part code on the metal is: 13P1-4ZN0201

That doesn't work to identify the part per Dell. It would be a small white sticker on the metal plate.

This would be much appreciated.

Happy holidays!

πŸ™‚

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5 Tungsten

Re: XPS 8930 SE, Exhaust Fan and PSU Upgrade

@Compumind    The stamped part code on the metal is: 13P1-4ZN0201

Click on photo to embiggen.

image.png

 

 

 

 

 

These parts can be purchased from the big auction site. They do not need to be purchased new! from Dell. These are not electronics or moving parts that wear, they are fan brackets. Again, if you are interested in the lower front intake fan bracket (black plastic), and you live in the lower 48 states, I have one that I am no longer using I can send you. Also, if you want to replace the new! Dell OEM industrial grade server fan with some quiet Noctua fans, I have some of those I can send as well; 3-pin or 4-pin, your choice. If you are interested, message me a shipping address.