list.serv.address wrote: > On the topic, > Does anyone know if the new Phenom (Quad core AMD brand) chips will > have the same power stepping issues as the X2 AMD chips do? Are any of > the newer AMD X2 chip revisions going to fix this issue?
The Phenom Quad-Core processors are based on the K10 microarchitecture (also known as Family 10h Processors) and should not have the TSC issues found with K8 (Family 0Fh Processors). I believe that the Athlon X2 6-series will be K10 based. Power management support for K10 processors integrated into Nevada build 80. Mark > There is an issue with the AMDs TSC register that won't be fixed in the > current generation of chips. So, the general suggestion was to stay > away from purchasing the current AMD X2 procesors since they will > probably never support power management. The Intels are the ones that > are getting the attention with regards to power management, since, if I > understand the issue correctly, they do not have the problem. If the > newer AMD X2 chips fix this, the story may change. See Casper's > response attached. > > -LSA > > Attached: Casper's message on 06/13/2007 09:58 AM > > > >any ideas if in the future we could see powernowd supporting AMD X2 > or Opteron dual core systems ? > > > "Never" would be my best guess, for current hardware. > > The reason is that Solaris is heavily dependent on the TSC register > and expects the value of different CPUs to be in sync to a certain > degree (fixed difference). > > Unfortunately, with the current Dual Core AMD CPUs, the TSC register > varies with the clock frequencies; you can see in the current powernow > code that it goes through some pretty hairy loops to "make it right" > (much to the chagrin of DTrace which bypasses the standard calls and > can't be "made right" using a loadable kernel module) > > Solaris will shortly support clock switching on Intel Core-duo CPUs; > but no clock switching at all on AMD CPUs until newer CPUs are out. > > Casper > _______________________________________________ > laptop-discuss mailing list > [EMAIL PROTECTED] > > > > ken mays wrote: >> By the way, >> >> I should mention the newer 3-GHz Intel X6850 quad-processor before the sun >> goes down on my little part of the world. That may be the current contender >> for the AMD Phenom. >> >> ~ Ken >> >> >> >> ----- Original Message ---- >> From: ken mays <[EMAIL PROTECTED]> >> To: Dennis Clarke <[EMAIL PROTECTED]>; Andrew Watkins <[EMAIL PROTECTED]> >> Cc: [email protected] >> Sent: Wednesday, October 24, 2007 6:40:56 PM >> Subject: Re: [osol-discuss] Will OpenSolaris work on a intel desktop Quad >> processor >> >> Dennis, >> >> The 8-core single processor market dominates. You also have the new >> Quad-core AMD Phenom which will be officially out soon and the Intel Q6700 >> processor. A dual Quad-Core processor server will be a very nice machine for >> someone with the use. >> >> As my wallet bursts into flames, I'd look into those Quad processors for >> commodity sake... >> >> ~ Ken >> >> ----- Original Message ---- >> From: Dennis Clarke <[EMAIL PROTECTED]> >> To: Andrew Watkins <[EMAIL PROTECTED]> >> Cc: [email protected] >> Sent: Wednesday, October 24, 2007 9:37:27 AM >> Subject: Re: [osol-discuss] Will OpenSolaris work on a intel desktop Quad >> processor >> >> >>> I am finally biting the bullet and ditching my work machine - a 9 year >>> old Ultra 10 - for a new system I thought I would go for the fastest cpu >>> on the market. >> At the risk of getting into endless loops of debates about "fast" I just >> have to ask why you think that is the fastest processor in the market? >> >> When you get it .. run the Radiance benchmark which is heavy number >> crunching and then we shall see. Thus far no one and nothing can touch an >> AMD Opteron running Solaris 10. >> >> see : http://www.blastwave.org/articles/BLS-0059/index.html >> >> >> Dennis >> >> _______________________________________________ >> opensolaris-discuss mailing list >> [email protected] >> >> __________________________________________________ >> Do You Yahoo!? >> Tired of spam? Yahoo! Mail has the best spam protection around >> http://mail.yahoo.com >> _______________________________________________ >> opensolaris-discuss mailing list >> [email protected] >> >> __________________________________________________ >> Do You Yahoo!? >> Tired of spam? Yahoo! Mail has the best spam protection around >> http://mail.yahoo.com >> _______________________________________________ >> opensolaris-discuss mailing list >> [email protected] >> > > _______________________________________________ > opensolaris-discuss mailing list > [email protected] _______________________________________________ opensolaris-discuss mailing list [email protected]
