up¦²
2005-12-23, 20:01:46
As for the performance of the dual-core Intel Xeon processors, there is nothing to boast at this time. These CPUs prove really efficient only in those tasks that can be easily split into multiple parallel threads for simultaneous processing and that are not critical to the system bus bandwidth. According to our test results, there are very few applications that meet these requirements. So, it looks like dual-core Intel Xeon processors are still performing purely representational functions being just a formal competitor to dual-core AMD Opteron.
In addition, I would like to take pokes at the developers of professional software tools. As we see, all this software is quite well optimized for two parallel threads. There are quite a lot of programs that can use even four simultaneous threads. However, when it comes to eight logical CPUs, there are just a couple applications that prove capable of handling that much power. It is quite natural, as 8-processor systems have never been available in the workstation market. But times have changed. Two dual-core Intel Xeon CPUs supporting Hyper-Threading technology allow processing 8 threads at the same time. And in most cases dual-core Xeon CPUs fail to show what they are capable of because of the lack of appropriate software support.
Quelle:
Workstation Processors Duel: AMD Opteron against Intel Xeon (http://www.xbitlabs.com/articles/cpu/display/opteron-xeon-workstation.html)
Interessant.http://www.xbitlabs.com/images/cpu/opteron-xeon-workstation/mathematica.png
At the same time I would like to point out surprisingly high result obtained on a system built with Xeon 3.6GHz processors. According to the numbers we got, it outperforms a system with Opteron 254 working at 2.8GHz by about 60%. Looks like Mathematica 5.2 favors NetBurst architecture, which boasts one significant advantage: fast ALU working at twice the CPU frequency.
http://www.xbitlabs.com/articles/cpu/display/opteron-xeon-workstation_16.html
In addition, I would like to take pokes at the developers of professional software tools. As we see, all this software is quite well optimized for two parallel threads. There are quite a lot of programs that can use even four simultaneous threads. However, when it comes to eight logical CPUs, there are just a couple applications that prove capable of handling that much power. It is quite natural, as 8-processor systems have never been available in the workstation market. But times have changed. Two dual-core Intel Xeon CPUs supporting Hyper-Threading technology allow processing 8 threads at the same time. And in most cases dual-core Xeon CPUs fail to show what they are capable of because of the lack of appropriate software support.
Quelle:
Workstation Processors Duel: AMD Opteron against Intel Xeon (http://www.xbitlabs.com/articles/cpu/display/opteron-xeon-workstation.html)
Interessant.http://www.xbitlabs.com/images/cpu/opteron-xeon-workstation/mathematica.png
At the same time I would like to point out surprisingly high result obtained on a system built with Xeon 3.6GHz processors. According to the numbers we got, it outperforms a system with Opteron 254 working at 2.8GHz by about 60%. Looks like Mathematica 5.2 favors NetBurst architecture, which boasts one significant advantage: fast ALU working at twice the CPU frequency.
http://www.xbitlabs.com/articles/cpu/display/opteron-xeon-workstation_16.html