So far attention as Nexus 7 main competitor has focused on the iPad Mini. However, the good feelings left yesterday in his presentation by Kindle Fire HD show us that this is probably a rival just as powerful, at least. Many users more or less convinced to buy the Nexus 7 may now be evaluating wait to the new Amazon device. Since the price here is an irrelevant option to make the decision (Amazon has traced the prices of the Nexus 7) we offer you a comparison of their technical characteristics to help clear your doubts.

Size and weight. The size of both devices is very similar, the Nexus 7 being only slightly narrower. Nor is the difference in weight very significant but, in any case, it would be in favor of Nexus 7: about 390 grams for the Google tablet compared to about 340 grams for Amazon.
Screen. Both devices have a screen of 7 '' with a resolution of 1280 x 800ie 216 pixels per inch. A small Advantage for Kindle Fire HD: in its development, technology has been implemented to reduce reflections which should substantially improve the reading on the device outdoors.
Processor. Nexus 7 carries a processor NVIDIA Tegra 3 Quad Core and Kindle Fire HD A TI OMAP 4470. Jeff Bezos claims that this processor is superior to the one carried by the Google tablet. Some estimates indicate that this could be true, almost matching the performance of the iPad (between 30 and 80% higher than the Tegra 3). However, in the absence of benchmark test, in which the Nexus 7 has been known to operate at up to 2,0 GHz, it is difficult to pronounce.
Conference proceedings. Kindle Fire HD models fold the storage capacity of Nexus 7, both in the version of 199 euros (8GB vs. 16GB), and in the 249 euros (16GB vs. 32GB).
Battery. We also do not yet have a precise test of the Kindle Fire HD, although in its presentation it was assured that it could arrive until 11 hours video playback, which is quite impressive, since would outperform Nexus 7 (9 hours) and even to the iPad (10 hours).
Connectivity. Neither device has 3G, and they connect only via Wi-Fi. There may, however, be a certain advantage towards the Amazon tablet if it is found that the double antenna It gives you the most connectivity that was promised in the presentation.
Software. Nexus 7 works with the latest Android version, Jelly Bean, while Kindle Fire HD does so with a modification of Ice Cream Sandwich. This may be a point in favor of Nexus 7 if we consider the improvements in responsiveness than version 4.1. supposed in front of 4.0. and also if we value receiving the new updates quickly in the future, as Amazon's tablet will likely do not receive any.
Ecosystem. As already we recently commented, this is an increasingly important point when choosing Android systems. The offer of Amazon it is evidently one of the widest and its premium customers enjoy certain free content. However, it is also an ecosystem much more closed and quite dependent on the applications that the Amazon store offers us, far from the variety of Google Play.
What does Nexus 7 have that Kindle Fire HD doesn't? There are some features that the Kindle Fire has dispensed with and where the Nexus 7 would show some advantage. The Amazon tablet does not have NFC, neither GPS.
What does Kindle Fire HD have that Nexus 7 doesn't? An extra feature of the Kindle Fire HD is to have a port HDMI that would allow us to connect the tablet to the tv, which is of special interest considering the video offer from Amazon that we can access from the tablet.