on 8-23-2008 12:08 PM Lanny Marcus spake the following: > On Fri, Aug 22, 2008 at 8:34 PM, John R Pierce <pierce-BRp9yk6zKL1Wk0Htik3J/w at public.gmane.org> wrote: >> Lanny Marcus wrote: >>> Question: How do I >>> determine whether or not the CPU in this box (I think it's an Intel >>> Celeron 2.6 GHz) supports SSE2 or not? I suspect the CPU does *not* >>> support SSE2. >> this gets fun. AFAIK, there's several generations of Celerons and its quite >> frustrating to tell them apart from purely a clock speed. >> >> The original Celerons were based on cache reduced P2 Deschutes, and later P3 >> Coppermine, these had 66Mhz busses, and used socket 370 (or even Slot 1 for >> the oldest versions). These had MMX and/or SSE depending on the age. >> >> there were Celerons from 2.0 to 2.8Ghz that were 478 pin 400Mhz FSB, and P4 >> "Northwood" generation technology. I do believe these are SSE2 but I'm >> having trouble finding definitive documentation of this. >> >> there are also Celeron "D" that are Prescott and can be either socket 478 or >> LGA775 and run from 2.13 up to 3.33Ghz, using a 533Mhz FSB, these have SSE3. >> >> and nowdays, there are celerons that are based on Core.... really really >> confusing. > > John: Thank you for the above explanation! As I just posted, in my > reply to Bill, the CPU has a flag for SSE2. I suspect that means that > the > chip does support SSE2. If so, the latest version of Google Earth > wouldn't run properly on it. Lanny Celerons in the last few years are usually just re-branded older generation chips so they can extend the manufacturing cycles of their silicon plants. Every new generation of chips is almost always followed by a new line of celerons with some crippling like smaller cache or clock speed locking based on a previous generations chip. -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't!!!! -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 250 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20080825/bbeec680/attachment-0004.sig>