The system uses 1.35V DDR-3, sometimes listed as "DDR3L"

Thank you very much indeed for your answer. Could you please tell me what source have you used for your statement? It does not mean I don't believe you, it is just that I need something official or verifiable, because there are contrasting opinions elsewhere.

You can look up the specifications for memory at www.crucial.com -- they guarantee compatibility and specify 1.35V DDR-3.

Since you know 1.35V IS supported, buy either 1.35V or 1.35/1.5 (dual voltage) modules.  Don't take a chance on 1.5V modules. 
The other thing you can do is check the existing RAM.  If it's 1.35V, buy that.  You know it'll work.

This system MAY be able to use both DDR-3 and DDR-3L RAM.  The current generation of Haswell-based systems requires the lower-voltage parts.

The best thing would be that someone at Dell officially answers which RAM modules are supported. Because Crucial gives as recommended upgrade DD3-1600, when Dell official papers state that E6410 supports DDR3-1066 and DDR3-1333 (but at the speed of a 1066 module). I suppose 1600 modules should be backward compatible, but that one is not the most suitable choice. So, similarly, I don't know if the 1.35V is totally accurate or it's just the voltage they have now on production.

In the absence of any identifier, either 1.35 or 1.5 should work.  Systems that require low voltage RAM (mostly the new Haswell systems) specify DDR3L and won't work with DDR-3.

That said, DDR-3 is on its way out for notebooks, as DDR3L is required by many new systems - that's the way to go with the RAM if you're buying now.

It will also reduce heat and improve battery life as well.

So -- it's pretty much a non-issue unless you now have 1.5 V RAM and it's not working.

Can I just say that the safer bet is to go with a 1.5v module. I've been trying to upgrade my RAM for a while now to 8gb from the 3gb that came with it!

None of the modules I got wworked... 2 sets of 4gb dual channel  modules and non worked! Kept throwing the laptop into a restarting loop just as it was about to load the OS...

The BIOS however recognised the 8gb fine!

I am now in the process of returning this second set and I have a 1.5v version on order.

I'll report back if it works!!

By the way, the modules that came with the laptop are 1.5v modules

I bought  two 4GB Kingston modules. KTD-L3CL/4GFR.

Package says for DELL and the online retailer had listed Dell Latitude E6410 compatibility.

Both dimms didn't work. Do we have to re install win7 64bit for it to work?

Apparently the really fast DDR3 has some kind of CAS Latency or other timing incompatibility.   I bought a couple sets of G.Skill F3-1600C9D-8GRSL for my E6410s and had exactly the same symptom.   When installed, it seemed to work.    When I tried to run the Windows 7 installer, I'd get kicked out.  Troubleshooting (tried different install disk, different DVD module, etc. finally went back to old RAM) pointed at the RAM as the problem.

G. Skill was great about replacing it with F3-8500CL7D-8GBSQ, which is working fine.   Newegg's  Memory Finder also suggests several other models of memory that should work with speed ratings up to DDR3-1600

Notably, none of the recommendatations from Newegg's Memory Finder are DDR3L. 

BTW, in my case I wasn't installing the OS as an upgrade.  I was installing the OS because after two weeks of the fast, but incompatible memory appearing to work, Windows could no longer boot either laptop.  I thought I had coincidental hard drive failures, but it was hard drive corruption caused by the incompatible memory.

Hi All

I bought the following RAM 2 x 4GB. Installed in my Latitude E6410.

It works perfectly. I even ran a memory test with ubuntu USB stick.