McKinley, Madison, and Deerfield

By Jim Turley  |  Posted 2002-02-11 Print this article Print

: The Next Generation"> The second IA-64 processor after Itanium is code-named McKinley and its likely to be faster, smaller, and all-around better than its predecessor. McKinleys L1 caches will be the same size as Itaniums, but the L2 cache will grow from 96K to 256K. The L3 cache will get smaller (3M instead of 4M) but move onto the actual chip, not just on the same cartridge. All three cache interfaces will get faster. McKinley shaves one cycle off the L1 cache access time (from two cycles to one), shortens L2 access time by seven cycles (to five), and takes eight cycles off the L3 latency (to 12 cycles). Adding the L3 cache to the chip will boost McKinleys die size significantly, probably to around 450 mm2, and ups the transistor count to 221 million. But manufacturing cost should be significantly reduced without the external L3 SRAMs and larger package required for the dual-chip (core and L3) Itanium. McKinley will use a completely different socket design from Itanium and a revised bus interface, dooming the first IA-64 systems almost before they get out the door. Just like Pentium Pro, Itaniums mechanical footprint will be an orphan from Day One. McKinleys system bus will widen to 128 bits (up from Itaniums 64) and its clock frequency will improve from 133 MHz to 200 MHz. The bus will still be double-pumped (i.e., transferring data on both rising and falling edges of every clock) yielding 6.4GB/sec front-side bus bandwidth.
Next up comes Madison, expected to be a 0.13-micron shrink of McKinley, all other things being equal. Deerfield, the fourth member of IA-64s growing family, will also be a 0.13-micron shrink of McKinley, but this time with a smaller 1M L3 cache and yet another new bus interface intended for cheaper systems. Deerfield will be the "value" version of IA-64, à la Celeron or Duron.

Jim Turley is a semiconductor industry analyst, editor, and presenter working in Silicon Valley. Focus technologies are 32-bit microprocessors and semiconductor intellectual property (SIP).

Most recently Jim was the Senior Vice President of Strategy & Technology at ARC International plc (LSE:ARK), where he set the Company's strategic direction and guided its technical developments at five locations worldwide. With headquarters in London (UK) and development centers in New Hampshire, Canada, and California, ARC International is an innovative leader in the semiconductor IP (intellectual property) industry.

Previously, Jim was senior analyst for MicroDesign Resources (a unit of Cahners/Reed Elsevier) as well as the Senior Editor of the prestigious industry journal Microprocessor Report (a three-time winner of the Computer Press Award), and Editor-in-Chief of Embedded Processor Watch. He also hosted and directed the yearly Embedded Processor Forum conference, the industry's annual showcase for new microprocessors. As an analyst and editor, Turley consulting with leading semiconductor firms, providing informed advice on technology trends and market requirements, and was often called on to participate in new product reviews, strategy sessions, and technology development for large semiconductor companies.

Turley is the author of six popular books including Advanced 80386 Programming Techniques, the best-selling PCs Made Easy and others published by McGraw-Hill and Academic Press. He's served as technical editor for several of McGraw-Hill's computer and programming books. In addition, he was a regular technology columnist for Embedded System Programming, Computer Design, and Supermicro magazines, and contributed articles to dozens more. Earlier in his career, Turley held engineering or marketing positions at Adept Technology, Force Computers, TeleVideo, and other high-technology firms in Europe and the United States.

Turley has created and presented numerous seminars and training sessions around the world covering technology trends and the competitive microprocessor market. He is also a well-known speaker at industry events such as the Embedded Systems Conference and Microprocessor Forum, is frequently quoted in the Wall Street Journal, New York Times, USA Today, San Francisco Chronicle, and San Jose Mercury News, and has appeared frequently on television, radio, and Internet broadcasts. Jim volunteers for Recording for the Blind and recently earned his amateur auto-racing license. He has a talented and stunningly attractive wife, two overachieving children, an apparently brain-damaged dog, and an opossum living under the house.

Jim can be contacted at or by calling (408) 226-8086.

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