Not too shabby for two business class laptops with integrated video cards. The D420 came out with a 2.0 overall and the D620 with a 3.0 overall, both due to video cards. The D620 beats the pants off of the D420 in all other categories, and has a nice sized screen to boot. The portability of the D420 will win out for many people though, unless you're a developer and need the extra .8GHz of the D620 (as rated here). Detailed perf specs are shown in the two images below:

D420	D620
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