Cube i7 Book versus Cube i9 – Which is the better Skylake?

Two of the most popular Premium Skylake Tablets currently available, the Cube i7 Book and the Cube i9 gets a thorough look. Which one will offer the best value, or better yet, which Skylake is better?

This article is an in-depth comparison of the performance offered of these tablets. It will focus more in terms of benchmark test results, gaming test and thermal.

Before starting, you should know a little bit more of the tablets mentioned.

The  Cube i7 Book is actually a reboot and thus it is an old school tablet. The same look but better performance. It has a 10.6 inch Electromagnetic screen 1080p Screen with support for Wacom.

The Cube i9 is a Surface Pro 4 look alike, with premium looks and finish. It has its very own kickstand and has the same 3:2 Aspect ratio of the screen.

SpecsCube i7 BookCube i9
ChipsetIntel Core M3-Y630Intel Core M3-Y630
GPUIntel HD515 GraphicsIntel HD515 Graphics
RAM/Storage4 GB LPDDR3
Foresee 64 GB SSD
Foresee 128 GB
Display10.6 inch IPS
1920 x 1080 pixels, Wacom Stylus
12.2 inch IPS
1920 x 1200 pixels
OS64 bit Windows 10 Home64 bit Windows 10 Home
IOUSB Type C, USB 3.0USB Type C, USB 3.0 (Standard)
ConnectivityIntel Dual Band Wireless 3165Realtek RTL8723 Wireless N

Starting with the specs, we already established that both of these tablets offer the same chipset. The tablet above is a brief comparison between the two.

The Cube i9 costs a bit more, and from the comparison above, you can see that it offers twice the storage capacity. Approximately 128 GB SSD. However, both tablets use the same Foresee Storage drive.

Perhaps the biggest plus for the Cube i7 Book is the native support for Dual Band WiFi. Which frankly is missing on the Cube i9.

CrystaldiskCube i7 Book (Foresee 64 GB)Cube i9 (128 GB Foresee)
Seq Q32T1 Read: 501 Mb/s
Write: 166 Mb/s
Read: 503.7 Mb/s
Write: 202.4 Mb/s
4K Q32T1Read: 128 Mb/s
Write: 100 Mb/s
Read: 142 Mb/s
Write: 140 Mb/s
SeqRead: 405.1 Mb/s
Write: 164.6 Mb/s
Read: 441.2 Mb/s
Write: 197.3 Mb/s
4KRead: 8.264 Mb/s
Write: 54.05 Mb/s
Read: 11.74 Mb/s
Write: 66.0 Mb/s

In terms of SSD performance, I used Crystaldisk to test the Foresee SSD Drive. And the performance was actually in favor of the Cube i9. However, the difference is just minimal, and thus more likely real world use will not be affected.

BenchmarkCube i7 BookCube i9
GeekbenchSingle Core: 2651
Multi Core: 4651
Single Core: 2631
Multi Core: 4991
Geekbench API/GPU1522115103
CinebenchOpenGL: 29 fps
CPU: 209cb
OpenGL: 28 fps
CPU: 189cb
Clock Speed1.99GHz (100% cpu usage)
Temps: 83 - 86C
1.77GHz (100% cpu usage)
Temps: 72-73 C
Gaming (Dota 2)1920 x 1080p
Lowest Detal
50-70 average fps
1920 x 1080p
Lowest Detal
30-40 average fps

In terms of CPU and GPU Benchmarks, I used only two, Geekbench and Cinebench. However, I do find Cinebench is a bit more standard. I wasn’t really surprised with the Geekbench results. But when it came to Cinebench, I found out some irregularities. More in particular in the CPU area, the Cube i7 Book appears to perform a lot better compared to the Cube i9. (This test was done repeatedly to avoid false results.)

Digging deeper, I found out that the Cube i9 wasn’t really working at its maximum clock speed of 1.99GHz when all the Cores are 100%. It was only limited to 1.77GHz, in so doing, the temps are also a lot lower compared to the Cube i7 Book.

On the other hand, the Cube i7 Book ran through the test consistently, working at 1.99GHz but the temps reached its peak at 86C.

And thus, one would assume that the Cube i9 is doing it to prevent overheating or CPU Throttling. It is still far away from its current threshold. What the downclock does is caused the performance to dip. And this is also observed when it comes to gaming. Dota 2 for example, with the same settings, I found that the fps were way lower on the Cube i9.

Another test puzzled me, I wanted to know whether the Cube i9 can really work at 1.99GHz and using Aida64, I was able to determine that it does. Similar to the Cube i7 Book, both temps just stayed within 72-73C at 100% CPU Usage.

TempsCube i7 BookCube i9
Casual use
Heavy use
Benchmark (100% cpu)
Aida64 (100% CPU test)72-73C72-73C

When it comes to Thermals, both tablets have similar idle and usage temps. Worthy to mention, that there is no fan here, because both tablets are passively cooled. On heavy use more in particular benchmarks like Cinebench, the Cube i7 Book reaches its peak of 80C+.

More so, the Cube i9 was ran relatively cooler compared to the Cube i7 Book. A good 10C cooler.

Availability of the Tablets mentioned:

So, which is the better Skylake?

Personally there are several factors to consider:

If it was about looks, then the Cube i9 would be my best choice. I really like the 3:2 Aspect ratio of the screen, not to mention, the build quality and design is premium. The only gripe I had with this tablet is the lack of Dual Band WiFi and some weird performance issues. Mainly, what I have stated above.

But ultimately, when you are talking about performance and cost. The Cube i7 Book is your best bet, it performs as it should, has Dual Band WiFi, and offers Wacom Stylus support. But I do have to mention one inconvenience, it lacks Standard USB 3.0 Slot, you need an adapter to use the USB 3.0 slot of the Tablet. Other than that, this should also be on top of your list. So, which do you think is the better Skylake?


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