E6540 Inadequate Thermal System! ATTN: Dell
Okay, so I have decided to revise this thread to accommodate the recent interest by customers who own this notebook.
Nutshell Explanation: The E6540 and its "one-fan" design is totally inadequate for properly cooling the i7-4800MQ and the AMD HD 8790M. The advertised specifications (2.7Ghz) are unobtainable during realworld and benchmark testing scenarios. The cooling system just can not handle the thermal footprint of the CPU/GPU.
Long Explanation: I have spent a lot of time and effort in researching this problem. Here are a few things I have discovered. First, Dell has a history with producing systems that can't handle the thermal requirements of the chips installed inside of them. One would think that Dell would learn from their mistakes... Second, the Latitude E series is probably an "end of life" model. Dell jumped the gun on the E6540 and failed to do the engineering. They assumed that the E6530 design could accommodate a CPU/GPU combination with a higher TDP than it's predecessor (E6530). Likewise, the E6540 was one of the first enterprise-grade Haswell notebooks. So I'm sure the pressure was really on at Dell to push this out of the door. These machines are inherently flawed. DOA! We have been scammed. For those of you who have upgraded to the 2.8Ghz model. You really got scammed! You will never be able to use that horsepower.
I have been a 15+ year Apple customer. This has been my first PC in a long time. Frankly, I'm very disappointed.
Now. Let me go ahead and leave a few links here that reference other forums/sources that discuss this issue:
[Notebook Review: Forum] http://forum.notebookreview.com/dell-latitude-vostro-precision/729032-e6540-owners-thread-29.html
[NotebookCheck.net Reviews] http://www.notebookcheck.net/Review-Dell-Latitude-E6540-i7-4800MQ-HD-8790M-Notebook.97595.0.html
As a customer, I have been instructed to 1) Update the BIOS 2) Reinstall Windows 3) Send in my machine for repair