Information

Dear forum members,
We are delighted to inform you that our forums are back online. Every single topic and post are now on their places and everything works just as before, only better. Welcome back!



Discussion

Discussion on Article:
AMD Unleashes More Details About Kaveri: HSA, TrueAudio, Mantle.

Started by: linuxlowdown | Date 11/13/13 08:42:55 PM
Comments: 24 | Last Comment:  11/16/13 09:51:56 PM

Expand all threads | Collapse all threads

[1-5]

1. 
We know the theory, now we need to see the Windows 8.1 and Linux (ie with HSA support) benchmarks to see how this kicks. No doubt AMD will wait until CES Jan 7 - 10 in the new year to release these figures, with the timing strategic post holiday season. But I feel they should have released some tid bits to start a spark to the motherboard sales. For example, how about a Handbrake x264 second pass bench?
3 2 [Posted by: linuxlowdown  | Date: 11/13/13 08:42:55 PM]
Reply
- collapse thread

 
I'm more interested first pass than second pass. Second pass is only used in ABR (average bitrate) encoding where you trade video quality for predictable file size. Anything else uses first pass.
0 0 [Posted by: trumpet-205  | Date: 11/14/13 01:22:11 AM]
Reply
 
Second pass is where the heavy number crunching and video quality refinement happens. The second pass transcode process really shows up the difference in floating point calculating power between APUs. This is where HSA will shine. I would put down money that Kaveri will out do Intel's finest in this department.
1 1 [Posted by: linuxlowdown  | Date: 11/14/13 01:56:08 AM]
Reply
 
ABR can both be done in first pass and second pass. When doing second pass the first pass becomes analyzing video. Second pass takes the result from first pass and determine which part to compress more which part to compress less. There is no refinement per say.

If you do ABR with first pass only it compress video on the go.

If you care about video quality you would do CRF or QP encoding instead. Which encodes each video frame based on quality factor. Since there is no need to maintain an average bitrate there is no need for second pass.
0 0 [Posted by: trumpet-205  | Date: 11/14/13 11:55:06 AM]
Reply
 
I used to do a lot of transcoding in my late-twenties circa 2000. But you've shown I'm not completely up to date with this anymore. I only do a transcode once a year now for the Sydney NYE fireworks TV broadcast (that runs about 20 minutes), and put it up as a torrent on Pirate Bay. My challenge every year is to see how fast I can get it posted after the fireworks end (that's if I'm not there in person, of course). I'm hoping Kaveri + Handbrake (GPU accelerated version) will break my previous records.
2 1 [Posted by: linuxlowdown  | Date: 11/15/13 07:54:31 AM]
Reply

2. 
5 1 [Posted by: Tukee44  | Date: 11/13/13 09:38:32 PM]
Reply
- collapse thread

 
Do you really think AMD is going to show its Ace card to Intel and Nvidia just yet? I will wait for CES announcements in January before I believe this is their most powerful APU at 95W TDP for 2014. I suspect there is a big cat and mouse game going on with this.
1 2 [Posted by: linuxlowdown  | Date: 11/14/13 02:10:36 AM]
Reply

3. 
AMD must survive to balance the monopoly from Intel & nVidia....
3 1 [Posted by: tks  | Date: 11/13/13 10:19:12 PM]
Reply

4. 
what....856GFlops amd said kaveri will hit 1TFlops means 15% performance loss,,,,,,,,, something went wrong or anything else?
1 1 [Posted by: mudi1  | Date: 11/14/13 12:10:24 AM]
Reply

5. 
Kaveri won't disappoint anyone but the AMD haters. Intel is sure to copy or lose even more market share.
2 2 [Posted by: beenthere  | Date: 11/14/13 08:12:12 AM]
Reply

[1-5]

Back to the Article

Add your Comment