Has anybody here taken a HDD configured with an Opteron system, and then put it into an Athlon/64 and had it work? Are they interchangeable, like an Athlon/32 and a P3/P4? -Ben -- "The best way to predict the future is to invent it." - XEROX PARC slogan, circa 1978
Benjamin Smith wrote:>Has anybody here taken a HDD configured with an Opteron system, and then put >it into an Athlon/64 and had it work? > >Are they interchangeable, like an Athlon/32 and a P3/P4? > >-Ben > >From a processor standpoint, it should just work. You may have driver issues because of the different motherboards, but assuming that both boards are using common components supported in the default kernel, you shouldn't have any problems with a switcheroo. Cheers,
On Wed, 2005-12-28 at 12:32 -0800, Benjamin Smith wrote:> Has anybody here taken a HDD configured with an Opteron system, and then put > it into an Athlon/64 and had it work? > > Are they interchangeable, like an Athlon/32 and a P3/P4? > > -BenI would think that they would be ... within reason. (The first time you run it, there will be kudzu finding all kinds of new hardware). BUT ... all the software that runs on x86_64 should work exactly the same on Opteron and Athlon64 ... so unless there is detection issues on bootup and some things are not detected correctly, it should work OK. (This is my opinion ... I could be wrong :) -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part URL: <http://lists.centos.org/pipermail/centos/attachments/20051228/dee5db5b/attachment-0001.sig>
Benjamin Smith <lists at benjamindsmith.com> wrote:> Has anybody here taken a HDD configured with an Opteron > system, and then put it into an Athlon/64 and had it work? > Are they interchangeable, like an Athlon/32 and a P3/P4?Yes, to a point. An x86 system will _not_ boot a x86-64 kernel. But yes, a x86-64 system _will_ boot a x86 kernel. The x86-64 kernel puts the CPU into a 52-bit PAE memory mode. x86 systems only support a 36-bit PAE memory mode. For more, see my blog entry here: http://thebs413.blogspot.com/2005/10/what-is-x86-64-long-mode-memory-model.html The only other issues are boot-time storage support. Most [parallel] ATA devices are no issue, because they are in the stock ATA/IDE kernel support. SATA is a different issue, because many SATA drivers are SCSI block drivers at this point, so they need to be built into the initrd (initial root disk). Linux isn't like NT 5.x (2000/XP/2003), which sets boot-time information in the registry and will blue screen if you change mainboard/chipsets. Yes, not even changing the ntbootdd.sys file for the appropriate ATA/SCSI works (like it did for NT 4.0 and earlier). The only way to change that is to boot up another OS (e.g., Linux) with a registry editor and manually change the 3 or so keys for the boot-time storage device. -- Bryan J. Smith Professional, Technical Annoyance b.j.smith at ieee.org http://thebs413.blogspot.com ---------------------------------------------------- *** Speed doesn't kill, difference in speed does ***
Johnny Hughes <mailing-lists at hughesjr.com> wrote:> (This is my opinion ... I could be wrong :)There was virtually no difference between early Hammer cores of the Opteron and Athlon 64s. In reality, it's really about interconnect and the mainboard. Opteron tends to lead in new core design changes, then Athlon 64 follows shortly afterwards. AMD is still perfecting optimizations and packaging with each new revision. You'll always find the Opterons to be of higher quality than the Athlon 64s. And it wouldn't surprise me if some roll off the same fab lines -- even if the codenames for each respective product is different. -- Bryan J. Smith Professional, Technical Annoyance b.j.smith at ieee.org http://thebs413.blogspot.com ---------------------------------------------------- *** Speed doesn't kill, difference in speed does ***