Quote:
Originally Posted by gguruusa
Yep, the cpu is designed to run at all those speeds. But, there's plenty of systems the cpu has to interact with that I can't begin to tell you the engineering of. What I do know is the device gets hotter than hell under certain conditions even with a reduced clock. Think of it this way...I can put an 800 hp engine in my chevette, and the engine will idle just fine. It'll also twist the frame into a pretzel. Unless you know initmately the design specs of ALL the components and how the device fared during environmental testing, which I'll be the first to admit I don't know, you really have no idea what will happen if you change how 1 part runs,...regardless of whether that single part is designed to deal with the change.
And the xscale processor is not "the system". That's way off base.
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You just made me pull my hair out...
It's not off base at all. You may not be able to tell me about the engineering of it, but I can assure you that I can. I have worked with the XScale in many embedded systems. It's part of what I do...
The processor in the 6700 is most of the system, hence that is why they call it a System on Chip. I am not saying that the CPU does not heat up more at a higher frequency because of course it does, and you dont need to be a engineer to know that.
But what I am telling you is that it is designed to run safely at up to 624Mhz. Again, it will run warmer but it will not damage it.
HTC and many other OEMs choose the XScale (or other SoCs) because they contain most of the system within and therefore it means less engineering and external components.
You cannot compare the XScale to a Intel Pentium, or a car for that matter. The XScale contains MOST of the internal systems that would be affected by a clock change.
The only components external to the CPU that would be affected by the speed of the proccessor would be the EEPROM/RAM/ROM chips but it would not damage them because the requirments on the pxa270 for the memory are compatible at 624mhz too.. I did my research
Now, indirectly speeding up the clock increases current draw (of course) on other components but the power devices and hardware in the XV6700 can tolerate it. It's quite a well built system.
I don't understand how people that don't understand the inner engineering of something can argue with someone who does...
Please, do your research before making such an assumption... If you would like to continue this debate on a technical level go to:
http://www.phytec.com/pdf/datasheets/PXA270_DS.pdf (PXA270 Design PDF). In particular, look at Page 14 (The Block Diagram). Most of the systems built in to this processor are those that are on the motherboard in a typical PC. Such as Real-Time Clocks, Serial UARTS, etc.
How do you think they manage to fit such a computer in to a tiny case? If it were not for SoC's this phone would be twice the size!
Weedahoe: You are right, but I am only investing time in to it because somtimes it's just more fun this way