XPS Desktops

Last reply by 04-12-2021 Unsolved
Start a Discussion
2 Jasper
2 Jasper
18157

XPS 8940, Better Thermals

According to the article on Engadget (Dell XPS Desktop) the new XPS 8940 is going to have better air flow.

"In designing the XPS Desktop, Dell says its goal was to maximize performance and airflow. The computer intakes air through the front and side of its enclosure before expelling it out the back. At no point does the case recirculate air, according to Dell."

This case looks exactly like the Inspiron G5 which from what I understand doesn't have good air flow. Any thoughts on how this is going to be better?

Replies (29)
4135

"with a 286.5mm triple fan graphics card, I can see why you may have had to go with a 15mm lower front intake fan."

Yup that's it. The full story is originally I had an EVGA GeForce RTX 2070 Black and two Noctua NF-S12A fans (top and front). I went through THREE bad EVGA cards before I gave up on them. I know it wasn't the computer's issue as I was having a friend test the cards in his computer and had the same results. I finally got a working card (fourth one). I ended up giving that to my friend for doing all of the testing for me and moved over to Gigabyte. Had zero problems with this card. 

As for the fit, I measured it and it seemed like it was a close fit. I was right except I wasn't accounting for the front case fan, hence the move to the 15 mm fan. That said it's a VERY snug fit in there

Since I was swapping out the front fan I figured I might as well do the top as well for consistency.

5964

@Anonymous wrote 

I don't know if anyone has tried this yet on the G5 or XPS 8940, but for the Aurora series AWCC, any 3-pin fan can be used at TOP FAN header and it will not throw the BIOS start up error. So a couple 120mm nice, quiet Noctua 3-pin 1200 rpm fans may work nicely.

 

Not heard from @Noorss about his post on the install of the 4 pin PWM fan on that chassis fan header using a Y cable and sent an inquiry his way if he is getting a startup error on a cold boot.or strange fan behavior like other non-Dell 4 pin fans.

As you state, I do believe using a 3 pin fan on the G5 chassis fan header or bypassing it completely with a fan to the PSU is the  easiest way to do so until a compatible swap fan is discovered or a suitable workaround is found using a 4-pin fan direct to the chassis header.   Still needs to be confirmed but no one on that thread has thrown a 3 pin fan on that header to test this.....I've asked on that thread and on another thread , but no feedback so far.  "Shrug"

Didn't see any information about the XPS 8940 having the G5 AWCC as part of the software package.  There are subtle differences in the motherboard between the two models and maybe that chassis fan header will be a bit more friendly to upgrades.

Anonymous
Not applicable
4098

@GameCrusader   Since I was swapping out the front fan I figured I might as well do the top as well for consistency.

My Phase I mod was pretty much the same; I already had the blower fan style CPU cooler, so I just went with Seasonic 850 watt PSU and Noctua NF-S12A FLX all around.

IMG_3835.JPG

2 Bronze
2 Bronze
4051

The XPS 8940 Service Manual shows a new "processor fan and heat-sink assembly" which is much beefier than the stock intel fan and cooler.  I would like to know if this new cpu cooler is standard with all configurations, or does it depend on the processor (like in the previous generation where only K processors got the blower and heat pipe assembly.)

 

 
 
 
 

 

3806

@GameCrusader  Hi there, I have an 8930 as well. Was the Noctua NH-L9i a straight bolt on? Or where there any modifications needed? Lastly,  did you get any error codes when not using a non Dell CPU fan? I'm planning to upgrade my processor to a i9 9900K since they're getting cheaper. Thanks in advance for your help.

 

Anonymous
Not applicable
3784

@Teamrich    I'm planning to upgrade my processor to a i9 9900K since they're getting cheaper.

If you are upgrading to a 95 watt TDP processor, you should consider the blower style fan and heatsink shown in the photo in the post above, which is a straight 'bolt on'. The Noctua NH-L9i is not recommended for i9-9900K CPU unless power is limited in the BIOS.

3512

So  upgrading to the new RTX 30 series is out of the option?

 

Is there not an external psu for desktops?

3503


@Socom Master wrote:

So  upgrading to the new RTX 30 series is out of the option?

Is there not an external psu for desktops?


Does the Dell PSU in the XPS 8940 use a custom connector(s) for the motherboard?

Don't know when Dell might test and offer RTX 30xx GPUs in this model. And even if they do, it probably would be an OEM version of the card which could have different (lower) power requirements than a retail version of the same card.

 

Ron

  Forum Member since 2004
  I am not a Dell employee

3447

What about installing the Intel Dynamic Tuning driver, which "is a power and thermal management solution used to resolve fan noise, overheating, and performance-related issues..."?

Ron

  Forum Member since 2004
  I am not a Dell employee

938

Good morning,

If you have a moment I would like to know if these are 120mm fans in the dell xps 8930? I would like to know if the 120mm fits and if it needs an adapter? 

Latest Solutions
Top Contributor