Why YouTube only uses CPU?

[DarkEnergy]

In Chrome, the 4k put my CPU at ~50%, in IE It was about ~18% at 4k but was not as smooth. 

[PlayModeOn]

What video player are you using? 1080p video should play just fine with 8350 iGPU, so that seems to be a software issue. When you have time, check if the problem persists with VLC or MPlayer.

I thought FX-8350 don't have integrated graphics (the motherboard don't have a video output, only from GPU). And yes I use VLC to play some videos, only CPU again, though not 99% this time. The amount of CPU usage depends on the quality or resolution of the video, YouTube @ 1080p is only ~30% while YouTube @ 4K is always ~99%. VLC @ 1080p is also low usage.

 

But anyway I am not too worried about this. This seems to be an anomaly and I plan to replace my FX-8350 with an i7 Skylake later this year, so hopefully when I change the CPU, motherboard and reinstallation of Windows 8.1 I wouldn't get this same behaviour, hopefully.

 

Cheers!

[PlayModeOn]

You're right. I thought that those high numbers were from APUs.

 

The Chrome high CPU with 60fps 4k videos is caused by a bug (I didn't checked the cause because I don't want to recompile Chrome just to do that).

You don't really need to change your CPU to solve that, just wait for a fix, or try another browser that supports that kind of vídeo.

 

If you're havin problems with VLC, check if the GPU decoding option is active:

http://www.ghacks.net/2013/03/05/how-to-enable-gpu-accelerated-decoding-in-vlc/

I am replacing my FX-8350 for faster rendering, single-threaded performance, efficiency and gaming performance then I'll give my FX-8350 and motherboard to my dad who wants to build a media PC, I do have a spare R9 270X that he can use with the FX-8350.

 

But thanks anyway.