Amazon's Kindle Fire HD: Better; Can It Compete With The Nexus 7?

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Storage Performance: Amazon Fixes A Big Weakness

Although cables are inconvenient, plugging your tablet into your PC or Mac should be the quickest and easiest way to get content on it. Unfortunately, our experience with the first-gen Kindle was downright terrible. Transferring data was "excruciatingly slow," to quote our original review, requiring more than 17 minutes to copy a 2.8 GB movie. Those are nearly USB 1.1-class speeds.

Fortunately, this problem is fixed in the new tablets.

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USB File Transfer2.8 GB H.264-Encoded MP4 Movie
Row 0 - Cell 0	Avg. Transfer Rate	Time
Amazon Kindle Fire, First-Gen (OS-Level File Transfer)	2.76 MB/s	17:14.615
Amazon Kindle Fire, Second-Gen (OS-Level File Transfer)	7.58 MB/s	06:17.324
Amazon Kindle Fire HD (OS-Level File Transfer)	11.13 MB/s	04:17.435
Apple iPad 2 (iTunes)	19.19 MB/s	02:29.090
Google Nexus 7 (OS-Level File Transfer)	10.07 MB/s	04:44.235

It appears that Amazon resolved its storage performance issues, seeing that the second-generation Kindle Fire requires just over six minutes to transfer our 2.8 GB file. That's roughly one-third of the time it took on the first-gen Fire. The Fire HD is actually the fastest Android-based tablet, averaging 11.13 MB/s. The iPad 2 outperforms them all, though, nearly halving the time taken by Amazon's Kindle Fire HD.

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Header Cell - Column 0	Amazon Kindle Fire (First- and Second-Gen)	Amazon Kindle Fire HD	Apple iPad 2
NAND Chip	Samsung KLM8G2FEJA	Samsung KLMAC2GE4A	Toshiba TH58NVG7D2FLA89
NAND Bus	eMMC v4.41	eMMC v4.45	Toggle 1.0
NAND Bus Speed	104 Mb/s	200 Mb/s	133 Mb/s

Why is there a discrepancy between the first- and second-generation Kindle Fires, and why does the iPad 2 perform so well?

Almost every Android-based tablet we have ever tested employs eMMC NAND, whereas Apple is the only major tablet manufacturer to use vanilla MLC NAND (the same stuff found in our favorite SSDs). Apple's SoCs contain extra logic to add block management and ECC. In contrast, MMC-based solutions handle management at the NAND level, so the operating system doesn't have to bother issuing commands. This also means that eMMC NAND is blind to most operating system functions, resulting in a significant amount of performance overhead.

MTP: Second-Gen Kindle Fire & Kindle Fire HD

Also, on its first-gen Kindle Fire, Amazon implemented a generic USB Mass Storage Class (MSC) driver. It is a detriment to performance, but a boon for system compatibility, since the tablet appears as a removable drive under Windows 7 and Mac OS X.

Like most other Android-based tablets, the second-generation Kindle Fire and Fire HD employ Microsoft's Media Transfer Protocol, which yields a significant storage performance bump. The tablets show up as plug-and-play media devices in Windows 7, but require Android File Transfer for compatibility in Mac OS X.

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30 Comments Comment from the forums

joepaiii

Why not normalize to a constant brightness level on all tablets rather than max for the battery rundown tests? Since they all have different max brightness, your tests aren't that reliable for judging true battery life.
Reply
Another great article, as usual, from this site. However this statement in inaccurate:

"Buying a Nexus 7 locks you into Google's Play store and its movies, newspapers, magazines, and music."

I have BOTH the Kinda Fire app and Barnes and Noble app installed on my Nexus 7. And that is one of the things I love most about Google's tablet: the ability to get content from any provider I want. I would also like to point out that my gf has the B&N tablet, and it is much better than the Kindle Fire for several reasons: 1) you can sideload your own content through a removable memory card, 2) it has a better screen, and 3) the build quality seems much better after holding both in your hand. It's a shame the Kindle get's more attention, the power of advertising I guess....
Reply
nitrium

Given these devices are also intended to be used as eBooks, why won't anyone test battery life reading an actual eBook - i.e. Wifi/Bluetooth off, screen on (probably at ~50% brightness), no background tasks, just the occasional page flip every 30 secs or whatever the average reading rate is. Is that too much to ask? I tried to find this info with Google, but apparently no one but me cares.
Reply
freggo

What turns be away from Amazon and on to the Nexus is, among other things, the multiple reports I ran into about Amazon messing with the content of the device.
I don't care for a manufacturer remotely deleting things without my permission.

Reply
mrmike_49

no mention of printing - is it possible to print from ANY of these tablets to a net worked printer???
Reply
acku

joepaiiiWhy not normalize to a constant brightness level on all tablets rather than max for the battery rundown tests? Since they all have different max brightness, your tests aren't that reliable for judging true battery life.
There was an interesting case study a while back by AMD that pointed out most people use their devices at maximum brightness, and we've always strove to lean more toward real-world conditions. Having said that, a while back, we also started to standardize our battery life tests to a fixed brightness setting. While not real-world, it does provide a window into how devices compare to one another in that specific scenario. Bear in mind that a fixed brightness on one display may look different on another because of gamut differences. Often times you'll push the brightness up on a low gamut LCD to improve readability or visibility. The article has been updated to include those results. We always intended to do so but this understandably doubles our benchmarking workload and battery life tests take a lot of time. Thanks for being patient.
Reply
acku

ryedawgAnother great article, as usual, from this site. However this statement in inaccurate:"Buying a Nexus 7 locks you into Google's Play store and its movies, newspapers, magazines, and music."I have BOTH the Kinda Fire app and Barnes and Noble app installed on my Nexus 7. And that is one of the things I love most about Google's tablet: the ability to get content from any provider I want. I would also like to point out that my gf has the B&N tablet, and it is much better than the Kindle Fire for several reasons: 1) you can sideload your own content through a removable memory card, 2) it has a better screen, and 3) the build quality seems much better after holding both in your hand. It's a shame the Kindle get's more attention, the power of advertising I guess....
Yes and no. You can use the Kindle Android app to view ebooks from Amazon. That's the case with Android, iOS, and Windows. However, this is not the integrated interface that the Nexus 7 provides. It's a little different for viewing ebooks and magazines.

More importantly is the difference in movie support. You cannot use the Nexus 7 to view Amazon Prime movies the same way on the Kindle Fire HD. H.264 streaming works when you're on an Amazon tablet, plain and simple. If you want to watch those same movies on the Nexus 7, you need to install Firefox and Flash. But that's still Flash, not the streaming H.264.

Reply
acku

nitriumGiven these devices are also intended to be used as eBooks, why won't anyone test battery life reading an actual eBook - i.e. Wifi/Bluetooth off, screen on (probably at ~50% brightness), no background tasks, just the occasional page flip every 30 secs or whatever the average reading rate is. Is that too much to ask? I tried to find this info with Google, but apparently no one but me cares.
That's a great idea! Unfortunately it's very difficult to implement from a programming perspective to keep consistent across all devices and platforms.
Reply
nitrium

That's a great idea! Unfortunately it's very difficult to implement from a programming perspective to keep consistent across all devices and platforms.
I'd actually settle for "idle" battery life, since reading an eBook is effectively utilizing nothing but the screen. So Wifi/bluetooth/GPS/camera off (not just unused, but literally disabled in settings), screen on (at ~50% brightness). Do these things last for days under these conditions? I can't find data for that anywhere. My primary use for a tablet would be eBooks, but I have no idea which reader (except the original Kindles) actually gives the best battery life for that specific purpose.
Reply
andrys1

Re the Barnes and Noble Nook Tablet HD that someone mentioned... A problem for marketing is that, despite the competition, it has NO cameras, not even one for Skype (important for family & friends who like to communicate via video chat), and, more important for many of us, B&N will not allow owners to enable installation of apps from non-B&N sources.

Amazon does allow installation of apps from "unknown sources," so I have (from places like getjar.com or 1mobile.com) apps like Google Maps in satellite mode, Mantano and also Aldiko to read DRM'd ePub books legally. I also have the B&N Nook app, since I have the NookColor but prefer to just read on the Kindle Fire HD now.

Very accurate article. As for the Kindle Fire HD, I love the stereo speakers with Dolby and good separation because they're relatively strong and very clear. I hate using headphones or earbuds as a rule (unless in public but I don't usually listen to anything while around other people) unless I'm wanting best sound in music. For me, although my hearing is not ideal, dialog is MUCH better on these than on laptop units I've tried.
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