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Help Comparison of processors and graphic cards for tablets

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Fab117

Lurker
Hi,


I am trying to compare the characteristics of a some tablets.


For each criteria (processor, graphics card, RAM, screen resolution ...) I put a weighting based on my need and then for each tablet, I note each of these criteria. Ex.:

Tablet A:

Criteria 1 (weight 5): 5

Criteria 2 (weight 8): 7

Criteria 3 (weighting 6): 3

... Total: 5 * 5 + 8 * 7 + 6 * 3 ...


My difficulty is that I cannot evaluate the different processors and graphics cards.

For processors, I guess that more cores they have and higher is their frequency, better they are. But I'm sure there are other parameters (such as the brand for example) to be considered.


Would someone kindly help me classify my potential processors and graphics cards by assigning a score of 1 (very poor) to 10 (very good)?


Processors:

Allwinner A80T Octa-Core; 8 x 2Ghz :

Allwinner A83T Octa-Core; 8 x 2Ghz :

Amlogic M802 Quad-Core; 4 x 2Ghz :

Intel Atom Z3735 Quad-Core; 4 x 1.8Ghz :

Intel Atom Z3736F Quad-Core; 4 x 2.2Ghz :

MediaTek MT6592 Octa-Core; 8 x 1.7Ghz :

MediaTek MT8392 Octa-Core; 8 x 1.7Ghz :

MediaTek MT8752 Octa-Core; 8 x 1.7Ghz :

MediaTek MT8752T Octa-Core; 8 x 2Ghz :

Rockchip RK3188 Quad-Core; 4 x 1.8Ghz :

Rockchip RK3288 Quad-Core; 4 x 1.8Ghz :



Graphics Card:

Intel HD Graphics Gen7 :

Mali 400 Quatre Coeur :

Mali-450 MP4 Quad Core :

Mali-450 MP8 Octo-Core :

Mali-T760 MP2 :

Mali-T764 16 coeurs :

PowerVR G6230 :

PowerVR SGX544 :


Thank you in advance


Fab
 
The biggest thing that makes the assumption "more cores x higher frequency = better" incorrect is not the brand so much as the core architecture. Different core architectures need a different number of clock cycles to complete the same task, so a more powerful core architecture clocked slower can still deliver faster performance than a less powerful one clocked faster. In fact there is so much variation in how different cores perform (in terms of processing power and electrical power demands) that I would regard counting cores and clocks without knowing what those cores are as largely useless.

However, even given that you can have well and badly implemented designs, and there are a lot of other features that can affect system performance. I certainly don't have the info to rate these different aspects on a 10 point scale (necessarily subjective, since what would be 1 and what would be 10? None of these are world-leading, after all), and really shouldn't be online here at all. Just warning you that there's a lot more to this than core counting.
 
I chose a tablet that had an Intel Atom Z3735F processor last month, not because of expected performance, but was that it comes with Windows, as well as an Android version if you want. You can't run x86 Windows on an ARM processor, such as the Allwinners, Mediateks and Rockchips. So for my uses of a tablet, the Intels get a 10, anything else is 0. It's not as if I'm short on Android devices anyway.. LOL

Another thing to consider especially if you like dabbling with and using custom ROMs, avoid anything Mediatek AFAIK. Because manufacturers can't release the required Mediatek SoC drivers and kernel modules as open source that you might need to build a ROM for a given device, they're subject to draconian NDAs.
 
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I will go with Hadron's post. It's not possible to compare CPUs based on core number and speed. To put it in context most people will understand: a 4th gen i5 clocked at 1.5Ghz is much much much faster than a Core2Duo clocked at 2.5Ghz.

Then you have to consider the tablets themselves. Even if they are all running Android, since they would all have certain nuances that the manufacturer made on their brand of the software, causing inconsistencies in performance despite the same hardware.
 
Hi,
Thank you very much to all of you for your answers.
I understand the complexity and that it is probably not the right way to select.
However, how could I evaluate performance (speed, fluidity) of the different tablet if processor is not the right criteria ?

@mike: The info related to the Mediatek is responding to another of my criteria (ability to root and install custom Rom's).
I also notice in your signature your "Guide to Chinese Android" and the tablets I am comparing are from the Middle Country.
Could you please let me know which are for you the 3-5 best Chinese tablets (min 9.7 '') ?


Regards,

Fab
 
The processor is one criterion, though it's not as simple as counting cores.

But other critera include the optimisation of the system software, especially the kernel, and thermal optimisation of the system design (thermal problems should be less of an issue with tablets than phones, but if the temperature rises too far the system has to throttle down, slowing things. How this is done depends on the kernel, which the manufacturer provides). Screen resolution matters too (more pixels = more work the gpu has to do), and if the manufacturer customises the UI then how well they write their code can make a difference. That's why I don't think that if UI performance is your criterion you can assess it just from a spec sheet. The best is if you can find honest opinions from people who have actually owned and used the devices.
 
Thank you for your message.
Indeed I will try to look for feed back.

Do you know reliable comparative for Chinese Tablets ?
My priorities are:
  • Screen size (min 9.7 '')
  • Back camera resolution
  • Ram (min 2 Gb)
  • Extend Card (min 32 Gb)
  • Fluidity in normal use (I will not play 3D games)

Thanks

Fab
 
l don't follow Chinese tablets in any detail.

One thing l would advise: check how much internal storage it has, since apps can only be installed internally, not on SD. And check how it is partitioned: since Android 4.0 this shouldn't be an issue, but a lot of cheap Chinese phones partition the storage in a way that leaves only a small fraction of the storage available for apps (something that has not been done by mainstream manufacturers since 2012). Just knowing how much storage it has in total won't tell you this.
 
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