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mrojas is offline mrojas
2009-08-08 , 00:29
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#1
I know that they are differences between the x86 architecture (CISC) and the ARM Cortex A8 (RISC) inside the OMAP that the next tablet will use.

However, now that there is a lot of talk about ARM netbooks and stuff like that, I was wondering what would be the rough equivalence between both platforms. For example, for generic office apps (let's say, calculations in a big spreadsheet), OMAP 3 is equivalent to an Atom processor? A Core Solo?

Any idea/info about that would be welcome.
 
ioioio is offline ioioio
2009-08-08 , 01:03
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#2
I have found no MIPS or FLOPS information regarding the OMAP. If you can find it, you can do some comparison to a x86 processor.
 
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mrojas is offline mrojas
2009-08-08 , 01:06
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#3
Originally Posted by ioioio View Post
I have found no MIPS or FLOPS information regarding the OMAP. If you can find it, you can do some comparison to a x86 processor.
I couldn't find any info either, that is why I am asking for some help

I found some saying that the Atom is roughly equivalent to the original Pentium 4, and then another saying that OMAP 3 is similar to the Atom, but those were comments in blog posts, so the info doesn't serve me well.
 
attila77 is offline attila77
2009-08-08 , 06:06
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#4
Originally Posted by ioioio View Post
I have found no MIPS or FLOPS information regarding the OMAP. If you can find it, you can do some comparison to a x86 processor.
It's RISC vs CISC, so MIPS would translate to Meaningless Indication of Processor Speed real quick FWIW they do about 2 DMIPS/MHz and FLOPS is not applicable as our OMAP3-s are FPU-less,
 
Thesandlord is offline Thesandlord
2009-08-08 , 06:42
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#5
Originally Posted by attila77 View Post
It's RISC vs CISC, so MIPS would translate to Meaningless Indication of Processor Speed real quick FWIW they do about 2 DMIPS/MHz and FLOPS is not applicable as our OMAP3-s are FPU-less,
Lol, sounds like Dr. Seuss to me.

I think this is a valid question. Someone load ubuntu onto a beagleboard and various x86 chips, and start benchmarking. Please.


See, I asked nicely.
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derhorst is offline derhorst
2009-08-08 , 07:56
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#6
The Cortex A8 performance is about equal to Atom and Pentium 3 at the same clock speed except floating point, which is much less powerful on Cortex. NEON optimizations might help a bit, though. Memory throughput is very high on OMAP3 especially compared to OMAP2.

I think this is a valid question. Someone load ubuntu onto a beagleboard and various x86 chips, and start benchmarking. Please.
There are Bytemark results on the web, that can be compared. For OMAP3-CortexA8 search the Open Pandora board(gp32x.com).
Last edited by derhorst; 2009-08-08 at 08:02.
 

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lardman is offline lardman
2009-08-08 , 09:31
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#7
Here are the benchmarks for the OMAP1 and 2, plus some other mobile processors: http://wiki.hbmobile.org/index.php?t...sor_Benchmarks

Here are the benchmarks for the Pandora (OMAP3): http://www.gp32x.com/board/index.php...temark__st__30

In fact read that whole last thread as some tweaks are made to try to improved the Pandora results.

I don't have nbench comparison results for a PC (but anyone can just compile that and try of course) but do have some dhrystone and whetstone results comparison if that's of interest: http://people.bath.ac.uk/enpsgp/benchmarks/
 

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Lord Raiden is offline Lord Raiden
2009-08-08 , 11:20
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#8
lol. Honestly, all I care is Omap3 >>>>>>>>> Omap2, which means that the next tablet will be a butt kicking wonder.
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jkridner is offline jkridner
2009-08-10 , 23:01
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#9
Originally Posted by attila77 View Post
... and FLOPS is not applicable as our OMAP3-s are FPU-less,
This is not true. There is an FPU on the OMAP3. It is optimized for single precision vectorized floating point operations.
 
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javispedro is offline javispedro
2009-08-11 , 00:49
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#10
Originally Posted by jkridner View Post
This is not true. There is an FPU on the OMAP3. It is optimized for single precision vectorized floating point operations.
You mean NEON?
There's still vfp, is it? At least I remember the fremantle gcc generating code for vfp by default.
 
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