Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!mintaka!bloom-beacon!eru!hagbard!sunic!fuug!news.funet.fi!tukki.jyu.fi!euler!tt From: tt@euler.jyu.fi (Tapani Tarvainen) Newsgroups: comp.sys.hp Subject: Re: 68040 and Floats, is this true? Summary: No Message-ID: Date: 9 Jun 91 09:36:46 GMT References: <1991Jun07.213219.14174@lynx.CS.ORST.EDU> Sender: news@jyu.fi (News articles) Organization: University of Jyvaskyla Lines: 21 In-Reply-To: curt@OCE.ORST.EDU's message of 7 Jun 91 21: 32:19 GMT Originator: tt@euler.jyu.fi Nntp-Posting-Host: euler.jyu.fi In article <1991Jun07.213219.14174@lynx.CS.ORST.EDU> curt@OCE.ORST.EDU (Curt Vandetta) writes: > A couple of days ago, I read an article (Sorry I lost it) that someone > here on the net wrote about thier experience with the 68040 upgrade on > the HP 9000/400t. I currently have a 68040 upgrade kit sitting on my > desking waiting for HP-UX 7.05. Is it true that the Floating Point > performance suffers as much as the previous post indecated? I have a > really uneasy feeling that it is true. Floating Point performance suffers!? I'd say the question is how much it improves ... our experience from the 400t -> 425t upgrade is that floating-point intensive programs are speeded up by a factor ranging from around two to almost seven. My only gripe is that they don't offer a 33MHz '040 for it, like they do for the 400s (wonder if the 400s upgrade would work in the 400t? Or just replacing the processor and the crystal ... if it works with a 50MHz '030 it just might work with a 50MHz '040, too ... ) -- Tapani Tarvainen (tarvaine@jyu.fi, tarvainen@finjyu.bitnet)