Dell Latitude E6420 ATG Review and Specs:

 

The Latitude E6420 ATG certainly delivers superior computing power: Configured with Intel's high-end quad-core Core i7-2620M running at 2.7GHz, 4GB of DDR3 RAM, Intel HD graphics, a 128GB solid-state drive, and the 64-bit version of Windows 7 Professional, it racked up a WorldBench 6 score of 136, breezing past the E5420 and all entrants on our current  all-purpose laptops chart.It isn't a gaming notebook, though. Lacking discrete graphics, the E6420 ATG posted scores on our gaming tests that were on a par with those of other Intel HD graphics-based portables (including the E5420, which uses the same graphics chipset). At least with the E6420 ATG you can pay extra to add an Nvidia graphics card, an option you don't get with the E5420.
On battery life, however, the E6420 ATG rose straight to the top of the class. I thought the E5420's 9.5 hours of battery life was impressive until I saw the E6420 ATG's result: It ran for 11 hours, 18 minutes. I might not want to lug this hefty powerhouse through an airport, but I could easily see it as my dream date on the passenger seat of a car during a long business road trip.The E6420 ATG's road-readiness is immediately apparent when you pick it up. Aside from the weight, you can't help but notice its supersturdy construction, including a gray anodized-aluminum plate set into the darker gray magnesium-alloy edges of the case. Other features designed to minimize wear and tear include flip-down port covers cut out of heavy, rubbery protective bumpers on both back corners. On the left edge you'll find a USB 2.0 port, a VGA-out, and a combo headphone/mic jack; around the corner on the back is an ethernet port. On the right edge are three USB 2.0 ports (including one that also supports eSATA),and around its corner on the back edge are HDMI and dial-up modem ports.
The E6420 ATG also offers a 54mm ExpressCard slot (which sits on top of its DVD burner on the right edge toward the front), a SmartCard slot on the left edge, and an SD Card slot on the front edge. An unusual option that didn't come with our test unit but might help you deal with the laptop's weight is a carrying handle that snaps into holes on the bottom of the front edge, which when not in use are also protected with rubber covers.As a multimedia machine, the E6420 AGT is a mixed bag. The audio, while decent, is somewhat muted compared with that of the E5420 perhaps the extra armor on the E6420 AGT muffles the sound a bit. I like the integrated webcam, though: It captured good-looking high-def video, even in low-light situations, and Dell's Webcam Central utility offers a good array of controls for adjusting backlighting, brightness, contrast, color, and even gamma. It's a great tool for Skype video calls, recording video, or capturing snapshots.
the Dell Latitude E6420 AGT is clearly meant for corporate users who want a machine that can not only survive rough-and-tumble conditions but also crunch serious numbers over a full day on the road, whether a power outlet is handy or not. Unless you need such a seriously sturdy, powerful laptop.