ASUS Transformer Pad 300 (TF300T) Review
by Anand Lal Shimpi on April 22, 2012 3:00 AM ESTBattery Life
The Transformer Pad 300 ships with a 22Wh integrated, non-removable battery compared to the 25Wh unit in the Prime. The 12% decrease in battery capacity obviously reduces battery life compared to the Prime, however I believe the panel further reduces the life on a single charge.
The 300 either uses a less efficient panel, a less powerful backlight, or a combination of both as you need to drive the panel at around 70% of max brightness to hit our standard test luminance of 200 nits. The Prime, on the other hand, is capable of reaching 200 nits at 40%. The net result of these factors is a drop in battery life compared to the Prime, and approximately equivalent battery life to the original Transformer:
Note that these are older results for the first Transformer (not on ICS) as I haven't yet had the opportunity to re-run them. I'll be doing that as well as working on our new video playback test over the coming weeks.
I didn't see a huge impact from toggling power saving modes on battery life, although that does say more about the CPU load of our web browsing test than anything else. In general I saw spikes at up to 1.2GHz, but most of the time the Tegra 3 never reached beyond 1.1GHz and more often it operated in its lower frequency states.
The addition of the dock increased battery life by around 50%. Remember that the dock isn't perfectly power efficient, you lose some energy in the charging process and the dock itself consumes energy to power the keyboard and touchpad.
Charging
The new 18W charger (front) vs. the old 18W charger (back)
ASUS ships the Transformer Pad 300 with an 18W AC to USB wall adapter, although I noticed that the version that came with the 300 is actually a bit shorter than what I got with the Prime and original Transformer. Its power delivery capabilities remain unchanged however. By supplying 18W to the Transformer Pad, the power adapter can perform a complete charge of the 300's integrated 22Wh battery in a bit under 2.5 hours (remember charge current drops after all cells reach a certain voltage).
ASUS' latest Live Wallpaper, the water level indicates battery charge level
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jackka - Sunday, April 22, 2012 - link
sigh.....i am neither a fan/hater of apple nor android/asus. i appreciate both sides. having said that, let me try to objectively address your "concerns" even though you do a pretty good job of madly shouting like anti-transformer, apple fanatic.
1. asus had no problem selling any and all transformer prime that it manufactured. they are probably wishing they could manufacture more and faster so they can make even more money. regardless of your take on the transformer's place in the market, asus is making very good money.
yes, the transformer comes in two pieces. and any normal person wanting to carry both pieces would carry them attached, just like carrying a macbook air. the two piece design is supposed to give you the advantage of flexible usage at the cost of less rigidity while attached.
if you are trying to dog on the two piece design, it would make sense to claim that the given design is a bad tradeoff because rigidity is more important than portable flexibility or whatever. but to claim it is bad because you have to carry two pieces around for a "notebook" is just bad logic and an infantile attempt at flaming. you have lost the respect and credibility of any of your logical readers at this point.
2. the transformer with keyboard costs about half the price of a macbook air. that is a pretty concrete advantage to any rational person. not that it would matter anyway because you are comparing two things in different categories. you seem to have trouble understanding the difference in categories.
3. rational people base their purchases on what they need/want and what they are willing to pay for it. perception of whatever is pretty irrelevant. unless you would buy a macbook air because you think it would help you look more like a wannabe artist / hipster. that's pretty ridiculous, right?
4. you can plug your head down a hole and play ostrich, but to the rest of the world the transformer infinity is going to be released in the near future with the known specs. why does it bother you that another product of the same line is coming with some better specs?
as a final note, you should think more about what you write in your future posts, because what you write shows real fast whether you have any kind of logic and critical thinking.
MrSpadge - Sunday, April 22, 2012 - link
What the.. ?!You don't have to carry both, you've got the flexibility of taking with you only what you need. Neither a pure tablet nor a pure laptop can offer this. how is that hard to understand?
And I don't think it's fit for real work either. But it doesn't have to be, if internet stuff, entertainment, IMs and mails are all you want to do. And Anand already adressed this: give us this form factor with x86 and things might get really interesting.
Listing the Inifinity: Asus has been pretty forward with the specs provided and Anand said it's not available yet. That's perfectly fine and helps to put things into perspective. If "the next big thing" was around you'd want to be told about it, too, instead of spending top $ now on something which might get outdated the next day.
MonkeyPaw - Sunday, April 22, 2012 - link
"While every single Transformer released thus far has shipped with 1GB of RAM, the 300 is the first to use 1.5V DDR3-667. The TF Prime used 1.5V DDR2-500, and the Transformer before it used ."The suspense is killing me!
jjj - Sunday, April 22, 2012 - link
Almost there but no SD,glossy screen (assuming) and the dock is still way too expensive especially for a more budget orientated SKU.Color accuracy is a disaster but that,by now,is to be expected .
That said,why aren't you pointing out any of the drawbacks in the conclusion,always trying to spin it to point out the positive is not what a review should be.
hybrid2d4x4 - Sunday, April 22, 2012 - link
Same complaints from me here. Either I missed it, but the reviewer didn't even seem to mention/complain about the loss of expandable memory in the form of microSD that the predecessors had. If I were to get a tablet, I'd like to be able to use it as an e-reader as well, and with a glossy screen, it just won't be happening. Hell, just using it for anything in a room with lots of windows is miserable with glossy screens and all the reflections.sprockkets - Sunday, April 22, 2012 - link
microsd is listed in the specs for all but the infinity, they might have added it later, just read the articlechi23 - Sunday, April 22, 2012 - link
This model HAS an microSD card slot. It's mentioned in the reviews on engadget and CNET, and listed as a feature on Asus' own site and in product listings (i.e. Amazon)As far as to my knowledge ALL Asus Transformer tablets have an microSD slot built right into the tablet (not 100% certain about upcoming Infinity until it's released). This is part of their standard design, and one of the main features that I've been looking for in my next tablet
I jumped on to post just about this, I don't know why Anandtech missed this in their review, their spec comparison chart on the 1st page is misleading. I was surprised because this was the first review I read on the model and immediately noticed the omission in the chart. All the other sites I mentioned confirm it's still there, I hope Anand will update his review.
sprockkets - Sunday, April 22, 2012 - link
microsd is listed in the specs for all but the infinity, they might have added it later, just read the articlemetaldood - Sunday, April 22, 2012 - link
No mention of MicroSD in review? I see microSD as part of specs everywhere else.andrewcooke - Sunday, April 22, 2012 - link
should lower/higher leakage be reversed?also, will these things run linux at all?