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Neon
Joined: 04 Feb 2008
Posts: 1512
Location: Dallas, Texas, USA
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 Posted: Sun Sep 20, 2009 11:09 am Post subject: AMD Phenom X4 or Opteron 1300? |
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This engineering sample is a quad-core. Is there a way to determine if it is Phenom X4 (Agena) or Opteron 1300 (Budapest) series? The cwid.exe suggests it is Opteron 1300, but CPU-Z and CrystalCPUID suggest Phenom X4.
Do these two series differ in any way other than branding?
http://www.cpu-world.com/cgi-bin/CPUID.pl?CPUID=1729 |
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D.8080
Joined: 03 Apr 2006
Posts: 1474
Location: Italy
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| Posted: Sun Sep 20, 2009 4:30 pm Post subject: |
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Very interesting, do you usually do tests with 4 gigs of ram?  |
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Sun Sep 20, 2009 5:41 pm Post subject: Re: AMD Phenom X4 or Opteron 1300? |
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| Neon wrote: | | This engineering sample is a quad-core. Is there a way to determine if it is Phenom X4 (Agena) or Opteron 1300 (Budapest) series? |
There are two values - brand id and package type - that are returned by CPUID instruction 80000001 in EBX register. These values are used to build processor name string. By the way, the CWID page also uses them to build "Processor name (CWID)".
| Quote: | | Do these two series differ in any way other than branding? |
They may have slightly different "Other features". For example, your processor doesn't have "THERMTRIP", and Phenom X4 CPUs have it. I have no idea whether Opterons have this feature or not because we don't have data on production 13xx Opterons in the database.
Gennadiy |
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Neon
Joined: 04 Feb 2008
Posts: 1512
Location: Dallas, Texas, USA
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| Posted: Sun Sep 20, 2009 6:48 pm Post subject: |
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What is the likelihood that the values returned by the CPUID instruction 80000001 in EBX register would be changed after the fabrication of engineering samples? If this is unlikely, then we can safely say that this is an Opteron 13xx sample.
The THERMTRIP feature is thermal protection circuitry, triggered by internal temperature sensor (rather than external diode). Why would it be missing or disabled on an engineering sample?
P.S. - dume, I only have one compatible motherboard to use for testing, and it happens to have 4GB RAM. RAM is crazy cheap lately. |
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