Wouldn't this mean increased power consumption as if you have a discrete card it may be unable to bring the power to idle consumption?
It shouldn't. Modern GPUs have drivers and firmware built with the knowledge that programs and OS features are going to be using them for UI acceleration and encoding/decoding during regular use. They have multiple performance states that allow them to get sufficient performance while staying at low power during these loads.
"IE11 will also support adaptive streaming, which will make for a better YouTube experience."
Isn't that on the flash plug-in? Upgrading the flash plug in will provide that functionality to all browsers?
The official Adblock plus is coming to Internet Explorer 6 through 11 sometime this summer.
"How bad does it have to be that it needs GPU ??? OMG !"
"Sad that IE has to use GPU to be fast yet other browsers don't have this problem."
All browsers utilize the GPU for hardware acceleration with CSS3 and Canvas rendering.
The difference between IE's hardware acceleration and other browsers is that IE is built on DirectX while the others are built on OpenGL. Why does this make a difference? Because DirectX is proprietary to Microsoft while OpenGL is open. The shitty part is Microsoft forces people to upgrade their OS to upgrade DirectX and subsequently to upgrade their browser. This is why XP users are stuck with IE8. From a development standpoint this is bad because as a developer we have to continue to support these legacy systems restricting us from using new HTML5 and CSS3 features. Microsoft is working hard to slow the internet's progress.
As for netflix in HTML5 while I believe it's possible I don't see how it could be secure. Flash and Silverlight protect video streams while HTML5 exposes videos to the end user potentially allowing the user to grab the video.