On Thu, Jun 5, 2008 at 11:39 AM, Mikhail Kuzminsky <<a href="mailto:kus@free.net">kus@free.net</a>> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
In message from Mark Hahn <<a href="mailto:hahn@mcmaster.ca" target="_blank">hahn@mcmaster.ca</a>> (Thu, 5 Jun 2008 11:57:28 -0400 (EDT)):<div class="Ih2E3d"><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
To be more exact, Rev. B2 of Opteron 2350 - is it for CPU stepping w/error or w/o error ?<br>
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AMD, like Intel, does a reasonable job of disclosing such info:<br>
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<a href="http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/41322.PDF" target="_blank">http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/41322.PDF</a><br>
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the well-known problem is erattum 298, I think, and fixed in B3.<br>
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Yes, this AMD errata document says that in B3 revision the error "will be fixed". I heard that new CPUs w/o TLB+L3 error are shipped now,<br>
but are this CPUs really B3 or may be have some more new release ? <font color="#888888"></font></blockquote><div><br>Yes, what are currently shipping from AMD are B3 revision processors. The TLB-look-aside problem is fixed.<br>
<br>There are other less-critical problems with B3, however. Specifically, power-related compatibility issues with various motherboards due to (according to the motherboard manufacturers) AMD changing the TDP late in the release process. I can't give any specific names or models that we know have problems, however. I can say that everyone involved is working on a resolution--usually through PCB revisions of the motherboards. A number of 1U power supplies that have previously worked with all Intel and AMD solutions are now insufficient, as well, due to 12V limitations. B3 pulls a *lot* of power.<br>
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