AMD Alters "Official" Transistor Count Inside Bulldozer Microprocessors, But Some Secrets Remain - X-bit labs

AMD Alters "Official" Transistor Count Inside Bulldozer Microprocessors, But Some Secrets Remain - X-bit labs:

Advanced Micro Devices has notified some of the product review web-sites (1, 2) that it had provided misleading transistor count number for its highly-anticipated eight-core microprocessors based on the Bulldozer micro-architecture. The reasons why AMD originally reported a wrong number of elements for its chip are completely unclear.

Based on the latest information provided by the world's second largest developer of x86 microprocessors on the planet, the eight-core chip code named Orochi - which powers the latest FX "Zambezi" product for desktops as well as Opteron "Valencia" and "Interlagos" products for servers - contains 1.2 billion transistors, not 2.0 billion as reported previously when the central processing unit was formally introduced and majority of its details disclosed.

more @ X-bit Labs Anton Shilov

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AMD Needs to Boost Clock-Speed of FX "Bulldozer" Chips - Sources - X-bit labs

AMD Needs to Boost Clock-Speed of FX "Bulldozer" Chips - Sources - X-bit labs

Advanced Micro Devices needs to improve performance of its FX-series "Zambezi" microprocessors for desktops featuring the Bulldozer micro-architecture before launching them, according to sources with knowledge of the matter. Performance can be improved with a new stepping, which will be production ready only by August.

The long-awaited central processing units (CPUs) featuring the code-named Bulldozer micro-architecture are now fully-functional and work without flaws, according to a person who wished to remain anonymous. The problem with the delay of the AMD FX family of chips is that they currently cannot operate at truly high-speeds and thus cannot achieve performance levels that AMD wanted them to. As result, AMD will need to design a new stepping of the processor and therefore delay the commercial launch to September.

The currently available B0 and B1 stepping Zambezi/Bulldozer processors can function at around 2.50GHz/3.50GHz (nominal/turbo) clock-speeds and at such frequency they cannot deliver performance AMD considers competitive, a person with knowledge of the situation said on Monday. As a consequence, AMD needs to tune the design of the processor and create B2 stepping of the chip with better clock-speed potential amid similar thermal design power (TDP), which will take several months to complete. Therefore, the Sunnyvale, California-based chip designer will release its highly-anticipated Bulldozer processors for desktops in September, not in June, as planned.