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Posts: 474 | Thanked: 283 times | Joined on Oct 2009 @ Oxford, UK
#321
Originally Posted by askarir View Post
RISC machines do the things they do very efficiently, and each instruction takes one clock cycle. CISC on the hand have instructions that take multiple clock cycles and because RISC intructions always take one clock cycle it is easier to do pipelining.

So it isn't quite as simple as you put it.
Both of you are out of date.

RISC machines execute multiple instructions in a single clock cycle these days - and so do CISC machines.

But it's even more exciting:

Modern x86 is something like RISC underneath. There is a sort of instruction translator running which reads the CISC instructions and converts them to a stream of RISC micro-ops (internal instructions). Several micro-ops are executed in parallel. Some micro-ops take multiple cycles each, or (on some x86s) half a cycle, but because they run in parallel the total time is lower, averaging to multiple micro-ops per cycle (typically about 2-3 depending on application, but memory access time is another major factor).

The N900's OMAP3 has a Cortex-A8 ARM core. Due to it's RISCy heritage, most instructions translate to one micro-ops internally but some translate to several. It can execute up to 2 micro-ops per clock cycle, depending on rules for dual issue. The ARM instruction set, although RISCy, is quite compact: It can do several things at once in the same instruction, and it's up clever compilers and code writers to take advantage of it.

The N900's OMAP3 also has a TI C64x DSP core, which uses a VLIW instruction set and executes up to 8 operations per cycle.

So you see, it is really not as simple as CISC vs RISC.

Generally, modern x86 performs very well because it's a highly optimised design. But it depends a lot on which chip family, as well as the clock speed. That's why the clock speed isn't as important in marketing any mode.

ARM performs very well while using much lower power than x86, and the DSP on the same chip can be used for number crunching (but it's not as open to use, unfortunately)

In general I expect the OMAP3 at 600MHz to perform better than any x86 clocked at 600MHz for most functions, but not necessarily everything.

(The x86s which squeeze a lot per cycle are usually run at higher clock speeds, so only older x86s or ones with less fancy designs are typically run at 600MHz).
 

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Posts: 37 | Thanked: 7 times | Joined on May 2009 @ Nicholasville, Kentucky, USA
#322
More like do you want some Cheetos with that cardboard box wine.

If you are going to critique something, do it maturely.
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Thomas Sakowich

I think American phone companies are in a conspiracy against us...
But that's just my opinion.
 
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Posts: 388 | Thanked: 115 times | Joined on Oct 2009 @ London, UK
#323
 
Posts: 114 | Thanked: 113 times | Joined on Nov 2009
#324
Oooops I did it again....

http://www.youtube.com/watch?v=Dnf31T3A-gI

Here's a video of the RSS App. If you guys think this is how the app should work and that it's perfectly ok...I give up.

- No, there is no need to reflash my phone.
- No there was no audio/video playing in the background
- It's slow as hell when feeds are updating
- Yes, it completely misses swipes with the stylus when it gets really busy
 

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Posts: 2,041 | Thanked: 1,066 times | Joined on Mar 2006 @ Houston
#325
Hello Megacrazy,

Yes the scrolling is spotty in the RSS app. It used to be like this in the previous versions also.
But does it effect the use of the rss app significantly? I personally dont think so.I am quite okay with how it is. I think your expectations are very very high...
 
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Posts: 4,672 | Thanked: 5,455 times | Joined on Jul 2008 @ Springfield, MA, USA
#326
Originally Posted by sachin007 View Post
Hello Megacrazy,

Yes the scrolling is spotty in the RSS app. It used to be like this in the previous versions also.
But does it effect the use of the rss app significantly? I personally dont think so.I am quite okay with how it is. I think your expectations are very very high...
High expectations that... it scrolls well? You're kidding, right?
 
Posts: 114 | Thanked: 113 times | Joined on Nov 2009
#327
Originally Posted by sachin007 View Post
Hello Megacrazy,

Yes the scrolling is spotty in the RSS app. It used to be like this in the previous versions also.
But does it effect the use of the rss app significantly? I personally dont think so.I am quite okay with how it is. I think your expectations are very very high...
My expectations are that the software they provide works. Yes, it does hinder usability because I have to sit there for x number of minutes before I can start using it, until all feeds are updated.
 
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Posts: 2,041 | Thanked: 1,066 times | Joined on Mar 2006 @ Houston
#328
Originally Posted by Megacrazy View Post
My expectations are that the software they provide works. Yes, it does hinder usability because I have to sit there for x number of minutes before I can start using it, until all feeds are updated.
I never saw a delay of minutes while scrolling. It was a slight delay of may be a second. I agree that it is not perfect but it is very usable. Also if you want a better scrolling experience you could disable images. Off course it really defeats the purpose if you want to see the images. But what i am saying here is that it is not even the slightest of a deal breaker for previous internet tablet owners. However it may something of importance to newbies to the maemo platform. Anyway thanks for bringing up this specific topic but i think you are over expecting things from a mobile device and even over exaggerating things. Of course your iphone may be able to do the scrolling better but as a package it falls way short of the n900.
 

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Posts: 23 | Thanked: 3 times | Joined on Nov 2009
#329
hey by reading a lot of threads here, I can see that the N900 have many problems and not simple ones... very unhappy about it and could make me think about cancelling. on the pre production units these problems were not mentioned but now...i think really that nokia speeded up the production process hence all these problems :S
 
Posts: 130 | Thanked: 7 times | Joined on Nov 2009
#330
Originally Posted by iJanne View Post
N900 also has a lot larger resolution to move around than what is on the iPhone. I think the scrolling is really nice in the browser for example, any jerkiness that may be there (I haven't really noticed) is really just cosmetic and movement is fast.
I knew I forgot to mention something.

480x320 vs 800x480 is a significant difference and is not a fair comparison. If anything, the N900 vs the Droid (854x480) would be a better comparison (prefer the N900 myself).
 
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