Dell Precision 7540 and 7740 Owner's Thread

I didn't fully realize that you were talking about ordering 1080p for your 7540 but you have a 4K in your 7510. Indeed, in order to swap the panels (without buying extra parts) you will need to order your 7540 with a 4K/UHD panel.

Swapping the panels would not void the warranty. Dell is very permissive when it comes to system modifications. Worst case, they would require you to put the original panel back in before performing warranty service.

 

I modified the config to include the xeon E2286M and the igzo panel. Delivery in 3 weeks.

 

Speaking of part #'s, I have a 7740 on order from the outlet...has everything I needed/wanted...except it does not have a backlit keyboard...so I'm hoping that Dell didn't do anything weird (i.e. use different internals so that one cannot replace a non-backlit with a backlit), and I can just replace the non-backlit keyboard myself. So (1) please tell me swapping a non-backlit for a backlit is possible; and (2) the part# for the backlit keyboard appears to be JDDCV, but all I seem to find when searching the Internet are backlit keyboards with part #266YW. Thoughts?...and thanks!

 

The keyboard is a drop-in replacement if you can find one. Part number might depend on your locality. Precision 7530, 7730, 7540, and 7740 keyboard are all compatible. Similar-looking Latitude or older Precision 7X10/7X20 keyboards are not.

 

del

 

Hi! Sorry for sort of repeating the question. I own a 7540 i9 and need to pickup one more. I am thinking of going with the Xeon for ECC memory. However, do not want to lose on battery life because of that.

Will be grateful if someone can compare the power consumption and battery life of i9 vs Xeon.

 

I have a feeling this is a stupid question, but is there any difference between ordering two individual SODIMM modules (identical part number) and installing them as a pair, versus ordering a kit containing the pair? The Crucial 3200 module kits in 2x16Gb have been on back order since around thanksgiving, but I can buy the individual 16Gb modules alone. I seem to remember reading somewhere there is some matching that goes on with pairs.

 

I believe the pairs are tested together, but basically you can't go wrong either way.

 

I'm interested too. I ordered 7540 with xeon.

 

I'm also very interested in knowing this since I'm undecided between the Xeon and the i7/i9.
However I also realize this is a difficult thing to compare with each laptop owner having their custom config.
I guess it would be helpful in just understanding the general case of Xeon vs i7 in a laptop. But even looking at Intel's ARK page for this laptop's available CPUs doesn't provide any useful info.


Some thoughts on this based on information I've gathered from here and elsewhere: (please correct me if wrong)
Xeon:
- allows for ECC memory,
- most likely does not allow for power limit adjustments,
- still possible to undervolt,
- requires Windows Pro for workstations,
- likely gets hotter than i7/i9 (and if it reaches 100C could potentially impact the GPU http://forum.notebookreview.com/thr...40-owners-thread.830037/page-71#post-10990624 )

CPU security patches:
- are having a consistent performance impact on performance. It's difficult to get a number but maybe 5-15%. Meaning the delta in performance you're hoping to gain by opting for a better CPU gets nerfed proportionally.
- I suspect the available Xeons may be impacted more than the i7/i9. I'm speculating this based on the info from https://www.intel.com/content/www/u...ngineering-new-protections-into-hardware.html in which the Xeon E-2276M and E-2286M are Coffee Lake and not even listed there.

As for synthetic benchmark references
https://www.cpubenchmark.net/cpu_list.php
- Xeon E-E2286M 18166
- i9-9980HK 17427
- i9-9880H 16290
- Xeon E-2276M 14440
- i7-9750H 13553
- i7-9850H 13432


And for me all these unknowns are compounded by the fact I'll be running Linux.

BTW, to all Linux users, which tools do you use to benchmark your system? Performance and temperature.
And FYI if you're concerned about security check this tool https://github.com/speed47/spectre-meltdown-checker I'm curious on results.