An anonymous reader writes "Over on the IE blog Microsoft's Ted Johnson writes, 'With IE9, developers have a fully-hardware accelerated display pipeline that runs from their markup to the screen. Based on their blog posts, the hardware-accelerated implementations of other browsers generally accelerate one phase or the other, but not yet both. Delivering full hardware acceleration, on by default, is an architectural undertaking. When there is a desire to run across multiple platforms, developers introduce abstraction layers and inevitably make tradeoffs which ultimately impact performance and reduce the ability of a browser to achieve 'native' performance. Getting the full value of the GPU is extremely challenging and writing to intermediate layers and libraries instead of an operating system's native support makes it even harder. Windows' DirectX long legacy of powering of the most intensive 3D games has made DirectX the highest performance GPU-based rendering system available.' Some Mozillians hit back in the comments to the IE Blog post and others have written blog posts of their own. PC Mag's Michael Muchmore seems to conclude that IE9 and Firefox 4 are more or less the same (despite the title of his article) while Chrome currently lags behind."