[Arm-netbook] Rpi vs cortexA8

[Gordan Bobic]

On 06/03/2012 11:42 AM, Enrico wrote:
> On Sun, Jun 3, 2012 at 12:17 PM, Tsvetan Usunov, OLIMEX LTD
> <usunov at olimex.com>  wrote:
>>> http://www.engadget.com/2012/06/01/raspberry-pi-impressions-the-35-linux-computer-and-tinker-toy/
>>>
>>> "And, in case there was any doubt in your mind about how painful just
>>> web browsing could be on this thing, we ran SunSpider (which also
>>> pinned the CPU) and got a score of 44,230. By comparison, our OG Droid
>>> (which is clocked at just 550MHz, but has the advantage of being a
>>> Cortex A8 chip) pulled a 11,188."
>>
>> so ARM11 @700Mhz is 4 times slower than Cortex-A8 @ 550Mhz?
>>
>> http://en.wikipedia.org/wiki/List_of_ARM_microprocessor_cores
>>
>> says 965 DMIPS @ 772 MHz for ARM1176 and 2.0 DMIPS/MHz for Cortex A8, so
>> Cortex A8 @ 550 should give 1100 DMIPS or about 15% faster
>
> Just speculating, but one of the things that could give a speed boost
> in the cortex-a8 is the neon unit.

Not if the same software is used in both instances since if it's running 
on ARMv6 it won't be issuing NEON instructions.

Gordan