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Originally filed under project GfxBoost, tagged Windows Mobile, Drivers.

For HTC-built MSM7K-based devices only! All MSM7K are technically capable, but only HTC's may have the correct drivers. Will probably not work on stock ROMs. I suspect the CDMA versions of the older MSM7K devices - pre-diamond - do not have the necessary drivers either. As far as I know, the first device that came with these drivers is the Kaiser, but IIRC they are also included in various Polaris ROMs.

Short and simple, GfxBoost activates "QTV" mode for specific surfaces. This makes for example DirectDraw display smoother and: a bit slower or significantly faster, depending on how you look at it. It also seems to have a small effect on Direct3D/OpenGL.

The effects you will see are heavily dependent on device, ROM, and driver versions.

The XDA-Developers thread is here.
Another must-read post is here.