I agree with Arpad's comment. The best approach is to have multiple tools at your disposal. There isn't one tool which can address all requirements. Of the tools available today, a couple can be classified as being very good at SI simulations on boards - reflections, crosstalk, delays, I'll call these Class A tools. There are a couple of different tools which are good at simulating power integrity, return paths; these Class B tools cannot compete with the Class A tools at SI simulations. Then there are Class C tools whose strength lies in high frequency (2.5 GHz and above) analysis, using 3D solvers. And let's not forget timing analysis, only one tool, mentioned in a previous email, performs board level SI and timing analysis. Fabrizio Zanella -----Original Message----- From: Muranyi, Arpad [mailto:arpad.muranyi@xxxxxxxxx]=20 Sent: Thursday, April 15, 2004 2:18 PM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Which tool is the best A slightly different "opinion": You also have to know how to ask a question to get meaningful answers. The original question was something like which tool is the "BEST". Pretty soon we got a list of practically all available tools on the horizon. So which is THE BEST if all are listed? Of course, the definition of BEST is relative, it all depends on what you want to do with the tool. One may be excellent for one thing while completely useless for another thing... Arpad Muranyi Intel Corporation =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D= 3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D =3D3D=3D =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D= 3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D =3D3D=3D =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Aubrey_Sparkman@xxxxxxxx Sent: Thursday, April 15, 2004 9:01 AM To: Sol.Tatlow@xxxxxxxxxxxxxxx; james.f.peterson@xxxxxxxxxxxxx; si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Which tool is the best Sorry, I just can not resist giving my OPINIONS! :-0 1) not only do I have a delete key, but I also have my mail program automatically file my SI-List email and only read the ones that interest me.... 2) I consider most if not all information on the SI-List to be OPINION and take it with a "grain of salt". Even if it is old, it gives me something to watch out for and discuss with the supplier. Cheap head-start on a tool eval. 3) and Yes, if you have a differing OPINION, please share it. Let's just remember to keep the discussion technical and on the issue, not the personality. 4) This is the right place to discuss using SI tools. But, that's just my OPINION. Thanks for your time! Aubrey Sparkman=3D3D20 Enterprise Engineering Signal Integrity Team=3D3D20 Dell, Inc.=3D3D20 Aubrey_Sparkman@xxxxxxxx=3D3D20 (512) 723-3592 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: =20 //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu =20 -------------------------------------------------------- =20 This email message and any files transmitted with it contain = confidential information intended only for the person(s) to whom this = email message is addressed. If you have received this email message in = error, please notify the sender immediately by telephone or email and = destroy the original message without making a copy. Thank you.=20 =20 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu