[Arm-netbook] Selecting the right Soc for out ARM Notebook project.

[Gordan Bobic]

On 06/05/2012 15:02, Lauri Kasanen wrote:
> Hi
>
> According to Phoronix, a dual-A9 @1.2Ghz is only ~equal to a N270 @1.6Ghz Atom with hard-float:
>
> http://www.phoronix.com/scan.php?page=article&item=ubuntu_1204_armfeb&num=1
>
> In some tests it wins (multithreaded ones mainly), some losses, some matches, but this only with hf. With softfloat it lost almost everything (earlier articles).

Yes, but most of those are synthetic benchmarks that are rather FP 
heavy, such as rendering, AV encoding, etc.

In Apachebench it shows rough equivalence clock-for-clock (which puts 
the A9 massively ahead in performance per watt), and 7z test shows them 
to be about the same which puts A9 considerably ahead of the Atom 
clock-for-clock.

It is also interesting that the Atom got soundly beaten by the A9 in the 
OpenSSL RSA test. I wonder if this test is multi-threaded which would 
clearly put the A9 at an advantage since N270 only has a single core. If 
it isn't then that is quite embarrasing for the Atom.

Gordan