Mike Szczys · Jul 8, 2013 at 11:00 pm

How to Overclock NAND Devices with PLL2

Anyone who’s remotely interested in the topic of overclocking hardware will enjoy reading about the proper way to do so on NAND based devices that have PLL2 rather than PLL4. Notice my use of the term ‘proper,’ as right off the bat, the guide makes a reference to burning out the hardware if this is done wrong.

The clarification between PLL4 and PLL2 overclocking is provided by XDA Senior Member Rootdefyxt320. He uses the analogy of Front Side Bus overclocking on traditional computers being similar to PLL2 overclocking. This is different from PLL4 overclocking, which is more analogous to changing your desktop CPU’s multiplier. Thus, changing frequencies with PLL2 affects the buses connecting the processor to various components, so there is a lot of performance to be gained by making it run faster—but also more inherent risk for component damage and data loss.

XDA Recognized Developer Cute_prince targets his HTC Explorer in the guide, but also mentions that it has more to do with the presence of PLL2 than just this particular handset. Because modern devices use System on a Chip (SoC) design, where there is essentially an all-in-one computer system on a single package, it’s more important than ever to know what you’re doing before driving hardware outside of its comfort zone. The guide includes several different posts to cover differences between overclocking on different ROMs. He starts with source-built ROMs and moves through Sense 4.1 and Sense 4.0a. To learn more, head over to the original thread.


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Mike Szczys

szczys is an editor on XDA-Developers, the largest community for Android users. Mike Szczys is a professional musician but spends all his free time working with hobby electronics. As Contributing Editor for Hackaday.com he became interested in Android as some of the early hardware hacks started popping up on the Internet. What followed was a gradually rising addiction to all things Android. View szczys's posts and articles here.
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