Asus' Eee Slate EP121/B121: A Windows 7-Based Tablet PC

Real-World Performance Against Tablets

Real-World Benchmarks

While we could subject the Eee Slate to all of our Windows 7-based desktop benchmarks, it's more interesting to see how it fares against tablets when we apply the same real-world testing approach with a high-speed camera.

Apple iPad: Input Lag Benchmark

While Windows 7 is a much more feature-laden operating system than iOS or Android, the Eee Slate's powerful hardware is better-equipped to make short work of boot-up.

Once we fire up a Web browser, the combination of Windows 7 and Internet Explorer 9 finally make it clear how demanding a fully-featured operating environment can be. It takes twice as long to launch an IE9 window on the Eee Slate than our slowest tablet, Acer's Iconia A500. The iPad 2 is an undisputed champion in this metric.

Input lag is the time it takes from pressing a key to the time it takes for text to appear on the screen. This tells you how fast a tablet is registering an action. Ideally, you want low input lag so that you don't feel like the device is stuttering as you type or click buttons. The average college student has a reaction time of 200 milliseconds for visual stimuli, so there's no perceivable lag while you're using the touchscreen on the Eee Slate.

Battery Life

Testing a tablet’s battery life tends to be highly variable unless you control the entire experience from beginning to end. Cumulatively, touch gestures don’t have a great impact on battery life. The biggest factors are CPU/GPU processing, screen brightness, volume, and Wi-Fi use. In order to accurately measure battery life, I coded a script that automatically plays MP3s at 50% volume while browsing different Wikipedia pages every 12 minutes. This benchmark is probably overkill, but it gives you an idea of a worst-case scenario.

Recharge Time

Charging times are a double-edged sword. Ideally, you want a nice slow charge so that your battery lasts more than a few hundred cycles. Fast charge times keep you away from the wall socket longer, but in the long run they cut down on the health of the battery. Usually, the rate of charge starts to slow down somewhere in the 80% to 95% range, which is why the charging time from 0% to 10% is faster than 90% to 100%.

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54 comments
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    Top Comments
  • DjEaZy
    ... w
    hardcore_gamerIntel HD graphics..that ruined everything

    ... AMD's Fusion would be a better choice...
    13
  • hardcore_gamer
    Intel HD graphics..that ruined everything
    10
  • Other Comments
  • Maziar
    Looks good but IMO,Win7 isn't designed for touch screens.Hopefully Win8 will add a decent touch UI to the OS which makes the Windows tablets more useful
    4
  • hardcore_gamer
    Intel HD graphics..that ruined everything
    10
  • Anonymous
    I think thats the worst idea in tablet world; putting windows 7 on a tablet... dealing with sidebars even makes me sick on 24" screen with a hi-res mouse... I cant think of it on 12" screen with fingers... and thats already tried and failed a few years ago; tablet PC's... Will somebody take any lesson from failed ideas? or even from Ipad's success? Grow-up and see what's happening... or leave it all to Apple...
    -10
  • back_by_demand
    All this tells me is that the inevitable rise of Fusion or Sandybridge with integrated graphics, or ION based tablets, Windows 8 will steal the show.

    When the hardware gets to a good enough standard then the peoiple will flock to a REAL operating system.
    1
  • DjEaZy
    ... w
    hardcore_gamerIntel HD graphics..that ruined everything

    ... AMD's Fusion would be a better choice...
    13
  • boiler1990
    I'd like a W8 tablet that could simply change interfaces between the WP7-esque look in tablet mode and a W7-like interface with the addition of a keyboard dock (basically a W8 Transformer).
    0
  • Anonymous
    I current own a ASUS slate. For those who are interested in this tablet. Here is my suggestion. Get the 2G ram/32G SDD one. and upgrade the ram to 4G and intel X310 series 80G. the final price will be abour $50 more than 4G/64G one; however, u gain better SSD performace as well as more storage. I have been using this one for 3 monthes now, I would say, compare to wacom's other drawing table, this one still a little beyond, however, when u compare with Wacom's Cintiq12WX, Slate does provide the same function, without an extra computer. I would say 256 level vs 1024 level is a little trade off for convenience and price. As a graphic designer (not illustrator), i dont really find the 256 level is a huge issue. Tho if ASUS intend to relseae 2nd Gen of this product' i will be really interested in seeing them switch to AMD fusion. intel's HD chip is simply a joke. I would trade off some CPU power for more powerful graphic. Anyway, final thought.. this is the only table with pen function that can run Adobe CS5. I only hope it wont be hard to find the replacement battery...
    8
  • Phu5ion
    A tablet with Intel graphics and Windows OS? What a waste.
    -6
  • spsfinest
    Why is there no page for battery life? Was this thing such a poor performer you were to embarrassed for it to post the info Tom?
    -6
  • acku
    @spsfinest -> Page 9
    4
  • sactownbwoy
    Why wasnt the acer icona w500 included? It uses the AMD Fusion cpu. I think that would have been better than using the acer icona a500 for comparison.
    4
  • clonazepam
    A very profitable software company needs to take the lead and design / build the hardware and release it as a loss, regaining revenue from the software. Taken from the current line-up of console game systems. That may be the only way to capture the market. In a case like this, price is everything, and this product won't survive.

    I just bought an Asus Transformer 16gb for $394. It's a gift to my mother. It'll do everything necessary while on the go or while on the couch. Printing will be done through Google's cloud printing. Anything she can't do, can be done on a pc.

    You can buy an Asus Transformer (substitute with most tablets / netbooks / some notebooks), and build a custom desktop PC for less than the cost of a single Asus Tablet PC. I think it's a no brainer.
    0
  • 11796pcs
    I was actually really interested in this tablet- but for $1300 (there's no way with 20GB Windows 7 that you can buy a 32GB) there are simply too many problems with it. I love the idea with the tablet but it looks like I'll be waiting for the Eee Slate 2.
    5
  • dalethepcman
    I would have prefered a write up of the Acer w500 or MSI 110W. Both of these systems are around $500 and use fusion based processors. The Eee Slate is just to over priced.
    3
  • randomstar
    Want one similar, but want to be able to do signature capure, so my question is all about quality of the digitizer- how does the w500, the MSI, others, compare to this one with that in question? CPU horsepower is not really relevant as long as it runs win7 pro "good enough" as you can just RDP back to a more powerful machine or VM.
    Ideas?
    0
  • WilliamMGeorge
    This review is about six months late - the EP121 debuted early this year. Back then, there was no Fusion option (though I will grant, that might be a solid choice now). In fact, the Slate was out before ultra-mobile Sandy Bridge processors hit the market.

    The only real complaint I have about the one my wife uses is that the SSD performance is poor compared to what was available at the time. It has also been a little buggy in places, relating to the touch input, but hasn't acted up for a while at this point.
    0
  • kevith
    I don´t see how a slow-performing, extremely overpriced flat piece of cheap plastic without the proper OS can be sold to anyone, that have heard of the thing called "a laptop".

    This is a real good example of how the industry is constantly trying - with a fair success - to create new "needs" and launch products, that are miles away from being good enough.

    People must be very bored and have way to much money these days...:-)

    Good thorough review though.
    -1
  • randomstar
    To those who do not see the need.. how about a service tech going out to estimate/quote/service jobs? being able to pull real time inventory and capture signatures electronicly is great. without having to dind a place to put the thing down so you can type. touch screen option and inventory selection rules.
    2
  • damianrobertjones
    suha67I think thats the worst idea in tablet world; putting windows 7 on a tablet... dealing with sidebars even makes me sick on 24" screen with a hi-res mouse... I cant think of it on 12" screen with fingers...


    ZzzZzzz.

    Something tells me that you haven't used a Windows 7 touch based tablet at all otherwise you'd know that you have gestures or can even touch 'hold' then move up or down, side to side.
    3
  • kevith
    "To those who do not see the need.. how about a service tech going out to estimate/quote/service jobs? being able to pull real time inventory and capture signatures electronicly is great. without having to dind a place to put the thing down so you can type. touch screen option and inventory selection rules."

    My mailman/GLS-driver have hed a little hand-held thing for that for years:-)
    0