Author: Matt Taylor
Date: 20:18:31 12/30/02
Go up one level in this thread
On December 30, 2002 at 19:32:57, Dan Andersson wrote: >http://www.digit-life.com/articles2/amd-hammer-family/index.html >The memory part is interesting. If it works out in practice it will be fast >miltiprocessing. > >MvH Dan Andersson Most of the facts were grossly wrong, but yes, the memory system implemented on x86-64 chips is very interesting. I struggle to believe that they have achieved 55-ns access times. My system is based around the 760MPX chipset and uses Registered/ECC ram, and my access time is about 133 ns (not the 200 ns the article claims). By integrating the memory controller, they probably achieve access times of ~90-100 ns. The biggest latency here is the memory itself, not the controller. Four-way systems have been built and demonstrated by AMD. AMD is keeping the performance figures hush-hush, but the one thing they have said is that an eight-way system will have no more latency worst-case than existing single-processor systems. With an OS that understands the architecture, you'll get better performance. -Matt
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.