by | March 3, 2015 | Reviews, Windows Tablet


Cube is well-known for their cost-efficient Android tablets, which matched those market-leading flagship slates in terms of overall performance while having a much lower price. And last year, this Chinese company started to enter new areas such as the smart accessories as well as Windows tablets to compensate its shrinking Android tablet business.

Cube’s first-ever business-focused high-end tablet, the i7, is a superior system in every way. With a stunning, high-resolution screen and a wider range of connections, but it’s the upgrade to the extremely powerful Intel Core-M processor that is most telling. Also, with Windows 8.1 and the full range of applications at its disposal, the i7 feels like a stronger, more flexible device.


Cube i7 main specs:

• OS: Windows 8.1 with Bing (64-bit)
• Screen: 11.6-inch IPS, 10-point multi-touch, IGZO
• Display Resolution: 1920 x 1080 (16:9)
• CPU: Intel Broadwell Core-M 5Y10c
• CPU Frequency: 0.8GHz (Base clock) – 2.0GHZ (Turbo clock)
• GPU: Intel HD Graphics 5300
• RAM / Storage: 4GB DDR3L / 128GB SSD
• Function: WiFi, Bluetooth 4.0, 4G, USB Host, HDMI
• WiFi: 802.11 b/g/n, WiFi hotspot
• GSM: band2, band3, band5, band8
• TDS: band34, band39
• WCDMA: band1, band5
• TDD: band38, band39, band40, band41
• FDD: band1, band3, band7
• Camera: 5MP back camera, 2MP front camera
• Battery: 7.4V – 5,000mAh
• Ports: Micro SD Card Slot, Micro USB 3.0 Port, Micro SIM Card Slot, 3.5mm Headphone Jack, DC Charging Port
• Size: 297*180*9.1mm, Weight: 840g




Cube i7 (left), Acer W700 (right) 


Android tablets and Apple iPads might be fighting it out for the thinnest, lightest tablet title, but Windows tablets normally aren’t competing in this department. With its unusual 11.6-inch screen and rather big bezel, the Cube i7, which is 9.1mm thick and 840 grams in weight, is neither particularly svelte nor particularly light by tablet standards. It is as thick as the Microsoft Surface Pro3, which also measures at 9.1mm. But if we compare it to the older Windows tablets, we found it a much more compact slate than products such as the Microsoft Surface Pro 2 (13.5mm, 907g) and the Acer ICONIA W700 (11.9mm, 950g).





The reason that the Cube i7 is much slimmer than most of its competitors is because it is fanless, and we will discuss this later in our review. With that said, it’s a little too heavy to use comfortably one-handed, and makes more sense if you have it resting on the arm of a chair or your lap while you tap away.




On the plus side, the relatively large bezel makes it very easy to grip, and you have to twist quite hard before there’s a hint of give where the corners meet the sliver metallic rim.




The rear cover sports Cube and Intel Inside logos, while there’s a plastic piece at the top where the 5-megapixel camera pokes through.




The i7 is an incredibly promising tablet when it comes to connectivity. It has a 3.5mm headphone jack, a Micro SD card slot, a Micro-HDMI port for an external display and – best of all – a micro USB 3.0 port as well as a Micro SIM card slot. With these two, it can connect to any USB 2.0 or 3.0 device that will run on Windows 8.1 and access the internet almost anywhere. Fortunately, the i7 is charging through an independent DC port, and I personally prefer this design rather than charging through the Micro USB 3.0 port because we often need to use the USB port to connect to other USB devices such as a mouse or external storages. What’s more, with Bluetooth 4.0 and dual-band 802.11n Wi-Fi, it couldn’t be better equipped for wireless connectivity. The only negative I could think of is that the Micro SD card slot featured on the i7 only supports cards up to 32GB, which could potentially be a pain in the ass in the time coming.




There are only two physical buttons – the power/standby key and the volume rocker, both hosted on the top edge of the tablet.






The Touch Windows Key is located on the front panel, below the display. And the front facing 2MP camera is in the middle of bezel above the screen.




Look at the bottom of the tablet and you’ll also spot another connector which connects its keyboard magnetically. Sadly, the keyboard base, although already on sale as a standard accessory which is included in the retail package, isn’t available for test. That’s a shame. With a keyboard base attached Cube i7 could rival the Surface Pro 2 as a convertible ultrabook-style device.




The Cube i7’s build quality is solid – it has to be at this thickness to ensure rigidity – but not as altogether epic as the Surface Pro 3’s look and feel. Cube’s use of a blue metallic shell gives the tablet decent premium feel, but it doesn’t offer multi-color options like the Microsoft Surface does.


Screen and sound




Cube understands well that 1920 x 1080 is the new baseline standard for a high-end tablet, despite the operating system it runs. So we get a full HD 1080p 11.6-inch screen on the i7. That’s tangibly larger than the screen on your average tablet, and 1-inch larger than the screen on the Surface Pro2. That’s bad news for pixel density, but good news if you plan to get some work done, as that little extra bit of screen real estate makes it easier to see what you’re doing if you’re working on Office documents, browsing complex web pages or using the Windows Snap split-screen view. With that said, I personally prefer the 12-inch display on the Surface Pro 3, the 3:2 screen aspect ratio makes better sense for business use, which is the ultimate selling point of Windows tablets.




Quality of the i7’s display, meanwhile, is extremely good. Text still looks smooth and crisp, and while the display isn’t the brightest we’ve seen – particularly when you compared it to the ultra-bright panel on the Acer ICONIA W700 – it does have wide viewing angles and an impressive richness and depth of color to compensate. It’s an excellent screen for entertainment, but a good screen for productivity, as well.




Audio is a mixed bag. It’s clearer and much more detailed than you generally get from a tablet, with a wider stereo sound. Unfortunately it’s also a little thin, a little bit wearing and doesn’t offer much in the volume department, particularly if you’re playing music or watching some Action films. The Cube i7 is nowhere near what the Dolby enhanced Acer ICONIA W700 can do in terms of the volume of the speakers.




As with the vast majority of tablets, we’d recommend headphones if you want decent sonic experience.






The Cube i7 ships with licensed Windows 8.1, which, of course, is more adept at business tasks and networking than the Android and iOS. But while the Atom-based Cube iWork series Windows tablets all comes with a licensed copy of Microsoft Office 365, the i7 requires you to pony up to get this critical productivity software.




Booting was fairly fast, we found that it took a few seconds to get to the logon screen and it took a total of around 14 seconds to get up and run on the desktop. There are no third party apps preinstalled, which means you have a clean version of Windows 8.1 with Bing. That is good news as the precious 128GB built-in SSD storage isn’t much occupied by useless bloatware or trialware. You will have more than 105GB free storage at your own disposal when you first boot into the system.






Cube has equipped the i7 with an Intel Core-M CPU, which has a base clock of 0.8-1.0GHZ and a Turbo clock of 2.0GHZ, Aided by the incredibly beefy Graphics HD 5300, 4GB of DDR3 RAM and a 128GB Solid State Drive, it is surprisingly fleet of foot. For those who don’t know much about Intel’s Core-M processor, it is a new 14 nanometer processor which matches the horsepower of the Intel Core-i5 Haswell series CPU yet doesn’t need fan cooling!




As a standalone tablet, the i7 delivered, with good on-screen typing, an accelerometer that wasn’t too sensitive. Volume controls on the top edge, along with Micro-USB and Micro-SD card slots make it reasonably easy to use this as a standalone device. Startup and application load times are swift, and the SSD is much faster than the eMMc drive we’ve encountered with budget Windows tablets. Sequential read and write speeds of 504MB/sec and 139MB/sec respectively in the AS SSD benchmark are respectable. To make it short, you won’t be needing any more performance if you use the i7 as a tablet, full stop.






Of course, for a more all-day experience, you’ll want to add a keyboard and touch pad or mouse. Cube makes it easy, with a snap-on keyboard base that transforms the combined system into a traditional clamshell laptop. Although our test unit doesn’t come with the customized keyboard base, we had no problem connecting the i7 with different Bluetooth and Wireless keyboards.




Unlike the entry-level Atom Bay-trail powered Windows tablets, which normally struggle with heavier desktop applications. The Cube i7 is built for serious tasks, most of the heavy desktop apps worked brilliantly.


cube i7 benchmark matrix


If you find benchmark testing more convincing, the i7 was returned some impressive scores by various benchmarks, beating similar devices such as the Acer ICONIA W700 in most of the benchmark tests.






In the Cinebench Release 10, the Cube i7 was returned a score of 8,616, which didn’t match the 9,324 notched by the Surface Pro 3 (i5, 4GB RAM), but trumped the Acer ICONIA W700 and those entry-level Windows tablets such as the ASUS A100T and Cube iWork 10.






OpenGL is not a strong suite of the Core-M series processor, yet the Cube i7 still managed to get a score close to the test results of those i5 powered tablets in the Cinebench Release 11.5’s OpenGL test. Its CPU performance, according to the Cinebench CPU test, was somewhere between the Surface Pro 3 (i5, 4GB RAM) and the Acer W700.






The Fritz Chess Benchmark returned a score of 3,877, which was indeed far behind the 4,899 by the Surface Pro 3, but still quite ahead of the 2,983 by the Acer W700.






The web browsing performance of the i7 is excellent. In the Sunspider test, the Cube i7 was returned a score of 82.5ms, which was the best I have ever seen on a tablet.






However, in the more graphic-intense Peacekeeper test, the i7’s scored less than the Surface Pro 3 and the Acer ICONIA W700.






Ludashi benchmark focus on the overall performance of a PC, and the Cube i7 also got a decent score running this test.




The HD Graphics 5300 embedded in the Core-M Processor is a slightly more powerful GPU than the HD4000 or HD4200 embedded in the 3rd and 4th generation of i-series processors, and even beats some entry-level discrete graphics, however, it still doesn’t match the performance of the HD4600 and HD5200, both of which have a higher voltage.




The i7 is clearly not a system designed for heavy 3D game lovers, although it is able to run most of the 3D games in acceptable frame rates. But as it is fanless, the heat could be overwhelming if you keep running graphic-intense games for a long period of time.




But if we are talking about business and everyday use, the Cube i7, when paired with a keyboard and a mouse, is a nearly perfect choice. I received the Cube i7 before the Chinese New Year break, and have done a lot of travelling since. I have been using my i7 to check emails, set up meetings and prepare business presentations. I have almost given up the desktop PC in my office because all the most updated business files and emails are now stored in my i7. I only need to connect it to a monitor when the 11.6-inch display feels too small for those complicated Excel sheets.




Even though the Cube i7 is a little more business-focused, but let’s not underestimate its potential for entertainment use. My Samsung Galaxy Tab has also been left unbooted for days as I have been using the i7 to stream my favorite TV shows and entertainment news. With the Windows 8.1 OS, I don’t need to worry about codec support for different formats of video files, like I normally do with Android tablets and iPads. It is true that Android and iOS have more multimedia applications and games designed around a touchscreen, but the number of apps in the Windows 8 store is also growing fast. And neither Android nor OS comes anywhere near Windows 8.1 when it comes to the total number of applications.

Many readers might be concerned about the heat dissipation of the i7’s fanless design like I did upon receiving my unit. The truth is, the i7 does get a little warm after a few hours of consecutive use, but never to a point where you want to take your hands off it.

Overall the i7 excels as a workhorse Windows 8 slate tablet. It’s got a lot more performance potential than those Atom BayTrail-equipped Windows 8 tablets. Plus, a detachable keyboard base, which is included in the retail package, can turn the i7 into a full ultrabook. Therefore, the i7 can replace both your tablet and laptop. But if you only want a device for intense 3D gaming, it makes better sense to get a desktop PC with high-end discrete graphics and cooling fans.


Keyboard Base




The keyboard base, which is included in the retail package, can easily be attached to the i7 through the magnetic connectors, instantly turning the i7 into a full laptop. Sadly, the base can only make the i7 stand with a fixed angle, which can be uncomfortable for the users sometimes.


Here, the keys aren’t as squished as the ones on the Microsoft Surface Type Cover. The i7’s keyboard is more expansive, with no shrunken or undersized keys. It didn’t take me long before I was typing at my usual brisk pace.




The keys offer decent press depth, with every keystroke, I make a loud “clack,” letting anyone around me know I’m getting stuff done. Just so you know, I’m typing this sentence from the i7. The thing is sitting on my lap, even. And you know what? I’m doing quite alright. This isn’t my favorite keyboard, but I do feel comfortable enough. Also, the i7’s keyboard base is not as flimsy as the Surface Type Cover, Instead it is as sturdy and comfortable as most laptop keyboards.


The Cube i7’s keyboard base brings a touchpad as well, and that’s a good thing, because the latest Windows 8.1 update made the OS much more mouse-and-keyboard friendly. Even though the touchpad is pretty precise and responsive, it’s still many steps behind the sort of glass touchpad you’d find on the MacBook Air or many Windows Ultrabooks. It sometimes takes multiple tries to get two-finger scrolling to work. Ditto for clicking and dragging windows and other objects around the screen. Other times, I accidentally navigated backward out of a web page when I was really trying to do some other sort of gesture. If you intend the i7 to be your daily driver, you are better off with a wireless or Bluetooth mouse.




Besides the standard functions a keyboard is meant to offer, the i7’s keyboard base also provides the users with two additional full-sized USB ports, making it easier to connect the i7 to a mouse and storage devices while saving you from the burden of always carrying the OTG adapter.






Like we mentioned earlier in the review, the i7 offers a great deal in connectivity. Besides the USB port, Micro SD card slot, Wi-Fi and Bluetooth we normally get from a Windows tablet. The i7 also includes a Micro SIM card slot which supports both 4G FDD-LTE and TDD-LTE data services.






Internet access via the 4G and 3G networks is swift. And the Bluetooth 4.0 on board means you don’t always need the OTG adapter if you want to connect your tablet with input devices or an external audio system. With an SSD inside the shell, data transmission through the Micro USB 3.0 port is several times faster than through a USB 2.0 port on a laptop with HDD storage.


Battery Life


battery life


What’s funny about the Cube i7 is that it has a chipset which produces as much horsepower as most of the ultrabook systems, along with a 1080p touchscreen — precisely the sort of thing that would normally suck the life out of a battery. And yet, the 7.4V, 5,000mAh battery lasts several hours longer than bigger touchscreen Windows 8 systems with similar internals. Specifically, we got 9 hours and 13 minutes of runtime after looping a video off the local disk with Wi-Fi off and the brightness fixed at 30 percent.


Battery life2


The i7 looks even more impressive when you compare it to lighter-weight, ARM-powered tablets. You wouldn’t expect that to be the case — this really isn’t a fair fight — but in fact the difference in battery life isn’t as drastic as you’d imagine, especially if you take into account tablets that offer merely average endurance. The, for instance, the Xiaomi Pad lasts only about half an hour longer than the Cube i7; and more than half of the Android tablets we tested were beaten by the i7 in the same test.

We’ll admit, the iPads or the Samsung Galaxy Tab S offer more longevity in the battery front. But here’s the thing: we don’t know of any Core-i5 tablets that can even come close. Take the Dell Venue 11 Pro for instance: it merely lasted 6 hours in the same battery run-down test, and also the Acer ICONIA W700, which I have used for more than 2 years, offered an average of 5.5 hours screen time on a charge. Compared to that, the Cube i7’s battery life would seem much more exceptional. After all, those are the real competitions of the i7, at least as far as key specs go. It’s incredible, then, that the i7’s battery life is more typical of a low-powered ARM device.







Photos taken by the rear camera 


Like most of the tablets on the market, the i7 has dual cameras. The front-facing 2MP camera is decent enough for video-conferences on Skype, but you wouldn’t want to use it for selfie. The rear-facing 5MP camera is arguably the worst 5MP camera we have encountered. Even with decent lighting, it still cannot shoot photos clear enough for Instagram updates. With that said, who would actually use an 11.6-inch tablet to take pictures?


The Competition




We get what Cube was going for here and really, it’s an intriguing proposition: a hybrid that can be used as a standalone tablet, but is powerful enough to be your next laptop. As we said, it’s fast and offers awesomely long battery life, however, let’s not forget the cost: with a connectable keyboard, the i7 is priced at RMB3,599 ($574.4), which is pretty aggressive pricing for a tablet with a Chinese brand attached to it. We suppose you’d feel more comfortable researching a few similar options before shelling out 600 bucks.


We mentioned the Surface Pro 3, which has already been on sale for a few months. It starts at $699 for the i3, 64GB model, with the Touch/Type Cover keyboard sold separately. All versions of the Surface Pro 3 support pen input, which the Cube i7 doesn’t. For only $489.99, you can get a Dell Venue 11 Pro with a 10.8-inch display, a Core i5-4210Y processor, 4GB RAM and 128GB SSD; for $723, you can get the more updated version of the Dell Venue 11 Pro, the Venue 11 Pro 7000, which features the same Core-M 5Y10, 4GB RAM and 128GB SDD as the Cube i7 does and, if money is less of an issue and you want an even more future-proof tablet, you can get the most advanced Dell Venue 11 Pro 7140 with an even more powerful Core-M 5Y71 processor, 8GB of DDR3L RAM and 256GB of SDD. However, whichever Dell Venue 11 Pro you choose, you will need to spend another tad of money for Dell’s keyboard.


If we take a look at Cube’s fellow Chinese competition, there are also a few options. One of them is the RAMOS M12, which made its debut appearance at CES, 2015, features a more powerful Core-M 5Y70 processor, an 11.6-inch 1080P display and 4GB RAM and, most of all, an adjustable stand as well as a full USB3.0 port. Another one is the PIPO K2, which is powered by the same hardware as the Cube i7 is and also includes a Micro USB 3.0 port. However, neither the RAMOS M12 nor the PIPO K2 is available now, even worse, their prices and release dates are still unknown.





Upon unboxing the Cube i7, I instantly fell in love with this slate a lot. After a few weeks spent with it, I still do, and I think you might too, but you’ll have to get past some surface flaws in order to truly appreciate it. The i7 is heavy, even for a tablet with a capable Core-M processor, and though it’s slim and solidly built, it has a plain look that can be off-putting. The good news is that it’s fast, even among Windows 8 PCs, and offers surprisingly long runtime. If I am being honest, after my experience with the Acer ICONIA W700, which consistently disappointed me on the battery life front, I didn’t expect much longevity from a tablet with so much horsepower under the hood, so it’s impressive that the i7 succeeds in being powerful while still lasting eight-plus hours on a charge. Most Core i-series tablets don’t have that going for them.


The problem, though, is that the Cube i7’s overall design doesn’t make the best sense. The inclusion of an adjustable stand would have been a more versatile solution, as you could be able make it stand when you use it as a standalone tablet. And the fact that it only has one Micro USB 3.0 port on the tablet itself means that you need to remember bringing the OTG adapter or the keyboard base whenever you decide to take the Cube i7 as your travelling company.


The Cube i7 may not have surpassed the Surface Pro 3 in terms of quality, design and performance just yet. But it is among the highest ranks of enterprise-ready tablets. If you want something designed specifically for the business user (as opposed to the consumer-focused iPad Air 2), but you don’t want to spend $500 extra bucks on the Surface Pro 3 and its keyboard, then you can’t go wrong with the Cube i7.



The good


  • Well-constructed metallic body which feels not only solid, but also premium.
  • The 11.6-inch 1080P IPS display is excellent for both productivity and entertainment.
  • Solid performance powered by the impeccable Core-M processor.
  • Fanless, the Cube i7 is quiet, I tested this device for many days and never heard a peep.
  • An average of 8 hours’ battery life.


The bad


  • The Micro SD card slot only supports cards up to 32GB.
  • It normally takes minutes to reboot the tablet, even without the update.
  • The i7 tablet doesn’t have a kickstand.


Cube i7’s purchase link:

18 Responses to “Cube i7 hands-on review – First Core-M powered tablet from China”

  1. stroppirob

    Got to say it looks good so far. It will be interesting to compare the specs, pricing and build quality when Pipo, Ramos and other companies release their Core-M tablets.

      • stroppirob

        Are companies like Pipo, Teclast, Cube and Ramos well known brand names in China? Here in the West the general public only recognise Samsung, Apple and maybe Asus, HP and Lenovo for tablets.

  2. Bogan

    I have this tablet for a less then a week and I have to say that I’m really impressed with its performance. The display is brilliant, the core-m is really killer cpu comparing to Intel Atom cpus. I have Meegopad T01 as well where you can see that the performance is not enough. But that’s not the case for Cube i7. Plenty of cpu power with the combination of 4 GB ram and 128 SSD is really different story.

    What I was disappointed about was how it came from manufacturing. The windows was full of some 3rd party chinese apps and drivers. Also windows account was configured. I was not able to restore it to the factory settings it ended with failure so I had to reinstall the windows 8.1 by myself. But then everything is ok. Only thing which I was not able to make running again is automatic rotation. But I think that’s the Windows issue and not the tablet because the drivers for accelerometer are up and running. I googled this issue and lots of people having the same issue with different devices ( Surface pro etc..). It’s not important for me anyway.

    Regarding the 32GB microSD support. I have to say that in my case it works well. I tried the cheapest microSD which I could found a noname 128GB for $12. And it works without any issues. But the card is ultra slow so I’m going to buy better one 64GB with better specs.

    I also hooked it up with my 34″ 3440×1440 display and everything works still well even with both displays turned on. Pretty impressive performance.

    One let down for me is Wifi. I know that core-m cpu supports wifi standard ac but here is still only 2,4 Ghz present. So the real speed is around 5MB/s which is really not enough. So I ended up buying the 5Ghz dongle and now I can get speeds around 25MB/s which is satisfactory.

    So overall I’m really happy with it and I managed to buy it on aliexpress for $549. Comparing this to other tablets like Asus Chi t300 or Dell Venue 11 Pro this is the same what you can get for half or 1/3 of price. The only competitor for me was MS Surface Pro 3 with i5, 8GB ram and 256SSD but still the half price was the real push for me. I’d like to have 8GB of ram and bigger SSD definitely but from CPU point of view it’s not a big difference – cpu benchmark for core-m gives you 3000 points and i5 in surface is around 3800. And in core-m is the new generation of HD Graphics 5300.

    • stroppirob

      Do you know if it supports Bluetooth file transfers ie sending photos between phone and tablet? Also can it be charged by micro usb or can you only use the supplied mains charger?

      • Bogan

        I was trying to pair it with my Nokia Lumia 930 but unsuccessfully. BT is there and functional but I was not able to make it running. But I struggled with BT on laptops before as well so it might be mine issue only.

        Regarding charging – I was not able to test it because I don’t have such a cable but I would say that’s not possible to charge it that way.

        and the connector looks like this

        Also the connectors are packed close to each other which means in my case when I tried to use the micro HDMI – HDMI adapter then I was not able to plug in the charger. But I assume that I can buy micro HDMI to HDMI cable instead which should not be that thick on micro HDMI side.

        • stroppirob

          Thanks for the help. I think for now I will wait to see what the competition bring out in a little while but I think they will all be around the same price point and have similar specs.

        • HendricksonNZ

          Did your UBS 3.0 speed cap at 40mbs? There seems to be an issue with my 64gb modle, usb 3 runs at usb 2.0 speeds only. Very disappointing.

  3. Bogan

    Regarding the microSD I bought Lexar 64GB microSD card

    and it’s working without any issues. So the information about the 32GB limit is not true.

    However the real speed reading and writing in this tablet is around 30MB/s which is not 95MB/s which is this card capable. Anyway good enough as a second storage space and comes with neat usb3 reader.

  4. Simon Cloutier

    can someone tell me what is the software we see in the screenshot that is playing a TV show episode ?
    I’d really appreciate.




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