All SPEC CPU results for AMD Barcelona invalidated

Summary:As of today, all of AMD's Barcelona SPEC CPU results so far have just been invalidated and labeled "Not-Available" by SPEC due to violation of the 3-month availability clause.  AMD is struggling with availability of its new quad-core “Barcelona” chips because of yield problems in manufacturing and the newly disclosed TLB (Translation Lookaside Buffer) bug.

As of today, all of AMD's Barcelona SPEC CPU results so far have just been invalidated and labeled "Not-Available" by SPEC due to violation of the 3-month availability clause.  AMD is struggling with availability of its new quad-core “Barcelona” chips because of yield problems in manufacturing and the newly disclosed TLB (Translation Lookaside Buffer) bug.  The TLB bug which causes a performance penalty when patched has forced AMD to stop shipping the Opteron chips to all but a few customers and it is impacting AMD financials.

The TLB bug also affects all AMD "Phenom" branded desktop-variant Barcelona processors though AMD is continuing to launch that part because of the rare nature of the problem.  Customers will have the option to download the BIOS patch at a later time from their motherboard manufacturer.  AMD has confirmed that the fix will come with the next revision called stepping B3 due out in Q1-2008.

Topics: CXO, Hardware, IT Employment, Processors, Software

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George Ou, a former ZDNet blogger, is an IT consultant specializing in Servers, Microsoft, Cisco, Switches, Routers, Firewalls, IDS, VPN, Wireless LAN, Security, and IT infrastructure and architecture.

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