Latitude 7450 Owners' Thread

unfortunately my first e7450 died and I had to get a replacement. The new one has a weird lcd screen..with some sort of haze and a yellowis tint. I though I was freaking out until I was able to compare it side by side with another older unit. I'll try to get a replacement again, and I'm hoping the next one will be ok...

 

Well after going through all 47 pages of this in search of an answer as to whether for sure the WAN was wired to pci-e or not it seems i drew a bit of a blank.. One thing is for sure thanks to you guys and whoever posted the tech guidance, i now know that the WWan is PCI-e 2. And that even DP can be passed over m.2. ITs just a shame the standards board (given that this format is not so standardised) don't make it obligatory for the manufacturer to clearly advertise the wiring, key type and if PCI-e how many lanes and what standard.. From the Sisoft detail I can only assume that the m.2 in this case are X1 but X4 is also a possibility.. now imaging that an ssd on an pcie X4 v3.1 woosh.

On the subject of keytype. Are not most PCIe SSD m slot? Every body has discussed length and interface type but seems key type has not been mentioned... If I'm not mistaken in the 7450 the WWAN is B slot and the WLAN is an A slot

Ok so I only bought an motherboard and wont fit a SSD in there as I intend to use it as a low powered quiet desktop top replacement and have SAS running off it.

for those concerned about space. of what will and will not fit, I don't know how much room there is in the chassis but could this get around the problem not only of space but also key/slots?
http://www.pc-adapter.net/products/750.html

 

I just came across this page http://arstechnica.com/gadgets/2015...e-interface-that-will-speed-up-your-next-ssd/
That halfway down has a table detailing keys and associated specs..

 

I believe that the WWAN slot keying is type B. There is a close up photo in my E7450 review (but note that this is the dGPU version). Dell's Technical Guidebook describes the slot as 3042 M.2. The Guidebook also indicates that the WAN card uses both PCIe (for WiFi) and USB 2.0 (for Bluetooth) while the WWAN card uses only the USB 2.0 interface. There is no spare space in the chassis for a card longer than 42mm using an extender cable but this could be a solution for a standalone board.

I doubt if the slot is PCIe x4. Even if it is, a small form factor x4 SSD is unlikely to deliver the headline performance except in burst mode unless given its own cooling system (which you could use in a desktop solution).

John

 

This is where it is confusing. The spec says: slot A possible interfaces are: PCIe x2, USB 2.0, I2C, DisplayPort x4
Tech guidebook also states : 2 M.2 expansion slots: 1 WWAN/SSD
Of course the WWAN would use USB but would the SSD use the USB interface also? On some boards there is the mention of WWAN/HCA/Cache.. By cache we presume a drive of forms.. Again would they just limit that to USB?
Seems strange .

 

Yes, the documentation shows a WWAN / SSD label on the board but the SSD is missing from the production models. This might only reflect Dell's realisation of the scarcity of 2242 M.2 SSDs using the PCIe interface but the slot still has the PCIe interface. A test would be to move the WAN card into that slot and temporarily tape it into position and see if it works since the WAN uses the PCIe interface.

John

 

7470s showed up at Dell today.
http://www.dell.com/us/business/p/latitude-e7470-ultrabook/pd?ref=PD_OC

 

Hello all...

New poster here, trolling the Dell Outlet (US) for last several days trying to find an E7450 that has the discrete graphics card. Dell's outlet seems terrible at providing system details. Is there any sure-fire way to tell if you are getting the one with the nVidia card? I have been searching for the ones with a 90W PSU, no mention of an msata card bracket/adapter, and no fingerprint reader. This seems to give the best shot at the dedicated card, but i have not had consistent results when chatting with the reps to ask for this important detail.

Thanks!

 

Strangely, the Dell system configuration doesn't mention the dGPU (it doesn't show for my E7450) which does make answering your question more difficult for Dell staff.

The best clue appears to be if the item has a minicard (mSATA) SSD and no mSATA interposer (which is listed as a separate part). I don't know, and can't think of a good reason why the fingerprint reader and dGPU would be mutually exclusive. The original configuration for my E7450 specifically said No MSATA Interposer but the current configuration simply doesn't mention the interposer.

John

 

When you are talking about the system configuration on yours, are you looking at a configuration application on your actual machine? Or just paperwork from your original order?

I have just had one instance where a Dell rep tell me a particular system had the dGPU. I wish I hadn't let that one go! Someone else in another forum bought it, so I am curious to see what they receive (did it really have the dGPU). I have had a few other times where the indicators were there (no mention of the mSATA bracket or interposer, 90W PSU, and the lack of fingerprint reader), and they still tell me that it has integrated graphics. The fingerprint reader does seem like

I have even begun the checkout process on a few pricier ones in the Outlet that looked like they may have the dGPU, and the order details still made no mention of it.

In fact, the ONLY time that the rep ever told me that the system DID have the dGPU, I had the system in my cart, and provided the system identifier, and they immediately told me it was the 840m. I thought this was odd because every other rep i had asked about this requested that I remove the system from my cart so they could "see" it.

Just for grins I checked the Dell UK outlet site, and they list the configuration details very nicely (cpu and gpu details). There were 2 of them available there, and both had the dGPU.

Thanks!