It is currently Fri Dec 26, 2014 6:12 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: Could PS3 cell-like design be implemented with x64 and SSE?
PostPosted: Sun Jan 28, 2007 9:35 am 
Offline

Joined: Sun Jan 25, 2004 2:01 am
Posts: 1087
Could a cell-like design be implemented with x64 and SSE?

One basic x64 core with several SSE subunits connected by high bandwidth, the advantage over cell is complete x86 compatibility?


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jan 28, 2007 10:15 am 
Offline

Joined: Fri Jul 22, 2005 4:54 pm
Posts: 24
It's not really necessary considering you'll be seeing eight FULL FEATURED cores in 2008. Four full featured cores in a native quad core design will probably outperform a Cell in most tests anyways. You'll be able to buy something like that in a few months from AMD.

The most impressive part of the Cell, IMO, is that it uses 40 watts of power. AMD's 4 core design will use 125 watts. At least that's what's being reported now. If true, that's really really pathetic on AMD's part.


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jan 28, 2007 11:55 am 
Offline

Joined: Tue Sep 20, 2005 6:55 am
Posts: 5085
Location: UK
Quote:
AMD's 4 core design will use 125 watts. At least that's what's being reported now. If true, that's really really pathetic on AMD's part.


Intel's 4 core also uses ~125W max; it seems like they've just pasted two dual-core chips together.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jan 29, 2007 7:28 pm 
Offline

Joined: Sun Jul 11, 2004 3:58 pm
Posts: 2057
Location: Toronto
This sounds plausible to me, I remember reading that intel made a multicore prototype with 80 FPUs.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jan 29, 2007 9:14 pm 
Offline

Joined: Fri Dec 10, 2004 8:10 pm
Posts: 1008
Location: San Jose, California
I think AMD is attempting this with their fusion core in 2009. They are going to use the graphics pipelines like floating point processors when they are not in use by the graphics.


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jan 30, 2007 4:12 am 
Offline

Joined: Tue Sep 20, 2005 6:55 am
Posts: 5085
Location: UK
Quote:
They are going to use the graphics pipelines like floating point processors when they are not in use by the graphics.



Is this the same as stream processing?


Top
 Profile  
 
 Post subject:
PostPosted: Tue Jan 30, 2007 9:24 am 
Offline

Joined: Fri Dec 10, 2004 8:10 pm
Posts: 1008
Location: San Jose, California
Yeah. That is my take on it at least. Sony was trying to make the Cell work like a graphics processor. It has 1 PowerPC core and 8 floating point processors. When they realized that they could not get the cell to perform graphics after a year of trying they hastily added a graphics processor to the Playstation.

The Fusion is going to be able to implement the graphics processor into the core which leaves available the stream processors on the die to do floating point work when Vista is not using them. On the notebook version, the graphics processor in the fusion will probably be doing mostly 3D, but on the desktop version, those stream processors are left free to what ever you want because the external graphics will be doing the 3D load. The stream processors, while probably not as fast as a low end add on graphics, will be free to do physics, or video decoding, or even help with the 3D load.

While Intel is trying to pack more and more regular pc cores into a single die or package, AMD thinks 2 or 4 is enough and wants to add stream processing to the cores. We already see diminishing returns with more processors so I think the stream approach is better. Lets hope it can be implemented without having to change the way programs are threaded. That would be the ultimate solution. If not, AMD might be betting on a losing strategy.

This is my take on the news and is purely speculation based on a few news stories and a basic understanding of stream processing. This is why I am long on AMD and short on Intel. Intel has the momentum and the process technology, but AMD's server and graphics implementation place them in the postion to lead the industry in performance applications. I am praying that they get past this hump of poor financial performance and can break away from the pricing pressures that Intel has placed on them. With a dependance on 90nm production and intel moving towards 45nm, AMD is in trouble if they cannot move to 65nm very quickly.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group