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XPS 8930, another CPU fan question?

So, I have an XPS 8930 (i7-9700 non-K) that gets warm while gaming. From what I've read (and I think I've read them all!) the quickest/easiest swap seems to be the Arctic Freezer 11 LP. Anyone tried any others? Is there another option that fits as well and goes in as easily?

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Re: XPS 8930, another CPU fan question?

@SaveMeJeebus 

My thoughts...

First step would be to check CPU core temps at idle and under load.

This free CPU temp diagnostic utility works for me:  https://www.alcpu.com/CoreTemp/

The CPU torture test in free Prime95 works for me:  https://www.mersenne.org/download/

Next, improve the case fan cooling and recheck CPU core temps.  What I did:  https://www.dell.com/community/XPS-Desktops/XPS-8930-how-is-the-cooling-in-the-i9-9900/m-p/7508730/h...

Next, upgrade the CPU cooler.  I have not needed to do this.

GK

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Re: XPS 8930, another CPU fan question?

Thanks for the post. 

I've already checked the temps both at idle and under load. This morning, idle temps were 40-45c and load temps (an hour or so of Division 2) were 89c. I've seen temps as high as 92c, which from what I understand isn't all that unusual in this CPU as they run hot, but 100c is its TJunction.

I'll look into adding/improving case air flow, but I'm thinking that while I'm in there (and can't leave my house!) I may as well look at the CPU cooling as well. 😃

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Re: XPS 8930, another CPU fan question?

@SaveMeJeebus 

Case fans will help.  CPU cooler may help, especially if the new cooler uses heat pipes or the OEM cooler assembly is flawed (not likely with your temps since they seem normally high).

As a general rule... making and confirming one change at a time has its advantages... easier to assess and troubleshoot cause and affect.  And if an incremental change fixes the issue, you're done.

Do let us know how any CPU cooler upgrade goes so we can learn from that.

GK

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Re: XPS 8930, another CPU fan question?

@SaveMeJeebus   I may as well look at the CPU cooling as well. 

Agreeing with @GKDesigns that case fans is the place to start. If you get this Aurora R5/6/7 bracket, a 120mm fan will easily snap into the lower front intake position. Make sure your top exhaust fan is 120mm. Also note the "K" model blower style CPU cooler in the second photo, which can be considered, if necessary, along with the Arctic Freezer Low Profile unit.

IMG_3805.JPG

 

IMG_3835.JPG

 

 

 

 

 

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Re: XPS 8930, another CPU fan question?

Thanks for the advice, folks - I'll order parts in the next little bit and let you all know what happens when I add some case cooling.

This counts as schooling for the kids who are stuck at home with me, right? It should!

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Re: XPS 8930, another CPU fan question?

@SaveMeJeebus 

This counts as schooling for the kids who are stuck at home with me, right? It should!

We think it should but my two daughters were never interested in such things at that age unless Legos count.  One of them went on to get a Masters in Mechanical and Aerospace Engineering, so don't despair and have faith... they'll surprise you in one way or the other.

GK

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Re: XPS 8930, another CPU fan question?

cpu 89C is too hot.  ok Intel GEN 9 CPU !

causes are simple here is a list. (thermodynamics 101 day)_

  • room is too hot, here it is 85f, on my beach house way hotter, is the room hot now. 95F is max on room.
  • CPU TIM bad, old and cracked TIM is bad TIM. (aka, Heat sink grease) replace it and do not use to MUCH.
  • lint on heatsinks and fans make them useless, clean the PC, really this is first and vents too. and PSU vents.
  • wires not hitting fan blades, do I really need to say that or stalled fans are bad? (PSU fan may be off)
  • Bad or dead or missing case fans. (bad system design or wrong fans put in)
  • what is is there, ?nothing ahh some PCs have bad BIOS,  and run fans too slow. upgrade BIOS>?

one can see clearly the CPU sends heat directly in to the case confines so case fans must remove this heat

or the CPU will overheat.  simple , fact is AIR COOL from room must enter the case and exit. or bad happens.

the top GPU cards can blow huge hot air into the case, not to rear of card to room but to the poor case.

that too is huge problem, now case fans must be beefed up to get that huge heat load out of the case.

all this is basic basics. end to end.

 

warning to the noobs, some fans do not turn on or go full speed until heat or power goes over 20 % of normal.

PSU do  that if new. (off until 20% of rated load is hit) or more.

GPU do that too if new, do you have GPU card? IDK what is inside YOUR PC> not me. and not told.

CPu all run full time, mine runs slow because BIOS sets it slow for my CPU runs so cool. by my efforts.

heat load 1 is here. then comes GPU heat  load.

mobo1.JPG

nobody
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Re: XPS 8930, another CPU fan question?

Warning to the noobs, do not put thermal compound on top of your CPU fan as suggested in the post above!

GK

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Re: XPS 8930, another CPU fan question?

@SaveMeJeebus 

For reference, here are my i9-9900 CPU (stock cooler) core temps under full load running the Prime95 torture test after upgrading to two 120mm case fans, which ramp up their speed with CPU load (still pleasant sounding)

Annotation 2020-03-26 091637.png

The CPU freq can vary up to the mid-4000s.

I believe the recommendation is to keep core temps 15-20c less than Tj. Max.  So, 80-85c for my system.  Of course, I never run my system at full load.

GK

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Re: XPS 8930, another CPU fan question?

@GKDesigns your pictures didn't show up for some reason, but I've been keeping an eye on this for curiosity's sake. This morning after an hour of gaming my CPU got as hot as 87 C, and averaged closer to 70 C. I don't think that things are quite as bad as I had originally thought.

However I've already ordered two 120 mm fans to go in the case, they should be here hopefully tomorrow. I can't find the correct bracket to attach it to the top of the case anywhere online, so it looks like I'll head into the metal shop and make something - that's the joy of being attached to a school when there's no-one else around. Access to many tools and light scrap steel. I'm sure I can bodge something together to make it fit. 😃

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Re: XPS 8930, another CPU fan question?

@savvy2  in my case, the computer being in a basement in the middle of the bald frozen prairies of Canada, room temperature isn't much of a concern. House is 22 C (70 F) upstairs, and cooler down here.

The computer is relatively new, so a gunked up cooler isn't a problem, and there are no wires causing the fan to not spin. 

You're 100% correct on the bad/missing case fans. There is only one in the case at the moment, and it's undersized. At the recommendation of others on this forum, I've ordered a pair of 120 MM fans. One to replace the 92 MM top fan and one to add in the front to draw in cooler air. I've also removed the excess drive bays, as they weren't being used and would cause air flow restrictions once I get the new fans in place.

As for the thermal paste, I'm not likely to remove the CPU cooler and replace the paste, unless I'm replacing the CPU cooler entirely. And depending on what happens with the case fans, I may or may not do that.

But thank you for your reply, it's all good informatio!

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Re: XPS 8930, another CPU fan question?

@SaveMeJeebus 

Images show up once the forum moderator approves them.  Dell has a social media conscience, if not adequate cooling on their XPS Tower product.

The sheet metal mounting plate for the top case fan is thin and easily bent, much like the lower HDD cages.  I don't mind the use of marginal material, but you do need to handle it with due respect.

You may not be able to copy it, material and mounting-wise.  So you may need to improvise with your own material.  I suppose you could modify the existing 92mm mounting plate, if careful not to destroy the flimsy thing, but that would burn that bridge.

I don't recall if it's possible to mount the fan directly to four holes in the chassis framework like I was able to do for the lower front case fan.  And I'm too lazy to look now.  Let us know how you get by on your own... others may need your solution... consider that a spec... others need to be able to reproduce it... that's why I went with four drill holes on the lower fan vs buying the fixture that won't be sold for very long.

GK

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Re: XPS 8930, another CPU fan question?

@GKDesigns I don't think that's it's possible to add the top fan directly to the case without drilling holes. I had the computer apart yesterday for the kids and I to look over and I'm pretty sure I'd have to drill holes to make it fit. Which isn't the end of the world either, I suppose?

Also, I've had a quick look around the interwebs and I'm surprised there's not templates for 3D printed versions of these items. Not too shocked, I guess, as Dell would likely squish them for copyright, but... a bit shocked anyhow. You can 3D print anything these days! If I was more comfortable with the software I'd just make one myself...

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Re: XPS 8930, another CPU fan question?

@SaveMeJeebus 

Drill away.  And know that one tiny rogue metal shaving can end it.

3D printing?  That's mad skills but doesn't meet the 'by anyone' spec! 🙂

GK

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Re: XPS 8930, another CPU fan question?

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Re: XPS 8930, another CPU fan question?


@Dell630i wrote:

Aurora Top Exhaust Fan Bracket 


Just an FYI that the attachment points on both ends of the fan bracket for the R7/8 is configured differently from what is linked above for the R5 / XPS 8910.  This is what it looks like now (I believe the XPS 8930 shares the same internal metal frame as the R7/8).  In the R7/8 fan bracket, there is a single attachment point up top: one square hole in the center.  In the R5 photo, top, it has a double attachment point: two square holes, one on either end.  The bottom attachment is different too.  See photo. Not sure if this changes anything as far as compatibility, but just FYI something to look into if you're going to go this route. 

Another aside, the stock Dell fan is rated at 149 CFM for the R7/8 (the one in the link is 123 CFM). 

 

get rid of thisget rid of this

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Re: XPS 8930, another CPU fan question?

OP should seek out the top case 120mm fan mounting plate that looks most like the 92mm one currently installed.  Or devise his own mounting.

GK

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Re: XPS 8930, another CPU fan question?

@r72019  (I believe the XPS 8930 shares the same internal metal frame as the R7/8).

It does, except for the 'hat' where the liquid cooling fan and rad are located. It looks like the pic you posted would work for XPS 8930. You might have to drill a hole, but better drilling the bracket in the garage than the case on your desk.

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Re: XPS 8930, another CPU fan question?

@Dell630i I appreciate the listing, but the problem that I have with that is that it's nearly $70 Canadian dollary-doos (after shipping and exchange, NOT counting any duty that may apply)... and I'd have to wait for it to get here!

I've done a fair bit of metal fab in my life, and I do have the tools at my disposal in the school's metal shop, so I'm confident I can make something work. And barring that, I have a roll of double sided Gorilla Tape that would likely work in a pinch! 😃

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Re: XPS 8930, another CPU fan question?

I would use the tape anyway...….less vibration noise.

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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