No that did not help.  Need a response from Dell.

No that did not help.  Need a response from Dell.

Mathprofessor

Unfortunately the DCF is user to user, not user to Dell, if you have a Dell warranty in effect, best to connect Dell's Technical Support, for a response.

Bev.

What about installing a slot fan?

Here's just one example. Looks like this one uses a Molex power connector, so you'd also need a Molex>SATA power adapter to connect it to the power supply in the XPS 8700.

It would be helpful to know which CPU you have installed, what OS, how much ram, etc. As the rockstars asked, did you open the case cover and blow out all of the dust from all of the fans? Was there much dust in there? It also may be time to dis-assemble the CPU, fan, and heatsink (page 62), clean off the old thermal paste, apply new thermal paste, re-assemble all and re-test.

It would be helpful to know which CPU you have installed, what OS, how much ram, etc. As the rockstars asked, did you open the case cover and blow out all of the dust from all of the fans? Was there much dust in there? It also may be time to dis-assemble the CPU, fan, and heatsink (page 62), clean off the old thermal paste, apply new thermal paste, re-assemble all and re-test.

+1 This should be the first step. Also make sure the case has good airflow to and around the front.

Also does the case have free flowing air space around it? or is it stuffed into a small space.

Windows 10, 16 gigs, I7.  I did open the case and cleaned it.  No dust.  I clean it every month.  

The cpu would not run at 70c it would shut down or lockup.

The cpu would not run at 70c it would shut down or lockup.

@Speedstep, please post a reference to support your statement or remove it because it is mis-leading. 

My firsthand experience on an 8700 i7-4770: I might have screen shots, but I no longer have that specific system.

When overclocking memory I run 24 hours of prime95 to test stability. I recall temps leveled out in the Mid 70C across all cores with a peak temp of 82C on one core. Never did it shut down or throttle or lockup.

I recall TJ-Max (Throttle-Temp) on 4th Gen Intel is around 100C. Run Core Temp and it will tell you.

 http:/  /www DOT alcpu DOT com/CoreTemp/

edit: These are my opinions. Not based on any facts or data.

Sustained Temps above 80C are dangerous
Sustained Temps above 70C are undesirable.

I have a xps 8700 that gets a little warn when doing a large C++ compile and compiling an Unreal app.

Can you install a really good temp monitoring program like HWiNFO64 and report the specific temps that are high.

Which CPU do you have. i5 or i7 and if i7 is it a 4770 or 4790?

What are your idle temps ? How long have you had your system ? 

Some speculation since it is not full of dust is that the CPU Heatsink paste has dried up and needs to be re-applied or the fan connector to the motherboard has somehow worked itself loose.

edit: what I meant above is one of the four mounts of the heat sink to the CPU is no longer seated properly.

I'm planning to dismantle my Son's XPS 8700 core i7-4770 in a few weeks for deep cleaning, transfer of all internals to a new case and at that time I'm planning to redo the thermal paste on the CPU.

I'll be testing before and after differences but it won't be a fair test because too many things will be changing and the temp variation of the room is also a big factor.