Quote:
Originally Posted by gguruusa
lol - Just because one part of a device is speced to run faster than it is, does not mean that the system will tolerate it. The system was designed to run at the speed you received it running at. Whatever consequence there is for running faster is totally your responsibility. In the case at hand, it's hard to say if the reason the CPU is underclocked is because of power issues or heat issues or longevity issues or something else.
What is clear is that a lot of people have overclocked with no discernable consequence beyond needing to charge more often.
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Where do I start? There are a few points needing correction. I know this processor inside and out. I hate to keep bouncing back to previous posts but you need to understand the following:
The Intel XScale PXA270, T.I. OMAP 850, and ANY other DVS (Dynamic Voltage Scaling) processor is designed to operate at any of those frequencies pre-set or dynamically scaling based on load. It's is not overclocked, it is just plain stepping.
The reason they call it stepping is because it steps the processor clock speed (i.e. voltage). The XScale (if enabled and depending how the OEM configured it) steps from say 312 to 416 to 520 to 624mhz as it needs and goes back down when under less or no load.
The reason no one has had problems with it (besides going through battery quicker) is because it is designed this way.
HTC did not set it at 416Mhz because they were afraid it would cook it. They set it for power management reasons and figured that device would benefit more at 416Mhz.
You said "just because one part of the device is spec'd at one speed just mean the system will tolerate it". The PXA270 processor in the htc IS THE SYSTEM. If you're familur with the Intel Xscale PXA27X and T.I. OMAP processors you would know that they are SoC's (System On Chips). In fact, on the HTC 6700 almost all core system control is on the 1 pxa270 chip. Really the only external chips are the T.I. DS 15xx battery managment IC, DACs, ADCs, power regulators, clock crystals, wifi transceiver, bluetooth transceiver, T.I. PCM codec IC, etc. Any system component that would be affected by clock stepping (or incorrectly labeled overclocking) is built in to the PXA270. In other words, it is designed to tolerate it.
You are right about the battery charge. That is the only reason your phone did not come at 624Mhz. HTC figures if they put it at 624Mhz it would drain the battery rapidly, not many people even fully utilize the 416Mhz, why would they need 624Mhz and pay with reduced battery life...
I promise you, no one will damage their phone at a Intel Spec'd frequency. Just don't try to run it at a frequency not listed by intel. Intel PXA270 Spec Standard Freqs: 312-416-520-624. There are a few others freqs that are not standard but stay away. You will fry it if you mess with the lcd clock, bus clock, ram clock and cpu clock if your not within spec or scaling between non-standard and standard freqs. Intel warns of switching between say a bus of 208Mhz and 211Mhz, 104Mhz ram clock and 111Mhz ram clock.
NO OVERCLOCKING... CALL IT CLOCKING... OR STEPPING... as weedahoe said, there is no external cooling or running at speeds it wasnt designed for. It's not overclocking, thus there is nothing for anything to tolerate.