Sunnyvale, California June 10: Advanced Micro Devices, the biggest maker of microprocessors that power personal computers after Intel, on Monday unveiled its most powerful Athlon XP processor yet, as the two chipmakers continue to slug it out in the marketplace.

Sunnyvale, California-based Advanced Micro Devices said its Athlon XP 2200+ processor, which has a clock speed of 1.8 billion cycles per second, uses 0.13 micron process technology, meaning that the dimensions of the chip are smaller. That boosts performance and helps to cut production costs at the same time, because more chips can be carved from a single silicon wafer. AMD said that Hewlett-Packard will start selling PCs with the Athlon XP 2200+ on June 12. Other PC makers, including Fujitsu-Siemens and NEC-CI in Europe, are expected to start selling systems using the new processor later in the month.


This is AMD`s first chip made using 0.13 micron chip-making technology. The Athlon, first introduced about three years ago, has received favorable reviews, and some tests have ranked its performance ahead of rival Intel`s Pentium 4 processors on some applications, even though some Pentium chips run at a higher clock speed than AMD`s.


Intel`s speediest Pentium 4 runs at 2.53 gigahertz, or 2.53 billion cycles per second. AMD, however, has in the past year embarked on a campaign arguing that clock speed is not the only and best measure of a processor`s performance. As part of that campaign, AMD now distinguishes its various Athlon chips with model numbers, rather than by clock speed, as it had in the past and as Intel continues to do.


However, some have said that AMD giving its chips model numbers could cause confusion among consumers about what is the true performance of an Athlon or Pentium chip.


Analysts have recently credited AMD with strong execution, and with at last developing a processor to rival the best that Intel has to offer. In past years, AMD`s model was to sell chips that offered roughly comparable performance at a 25 per cent discount to Intel chips. Now, however, with its recently announced Hammer chips, AMD is seeking to go head-to-head with Intel. AMD has a bit less than 20 per cent of the market for microprocessors, while Intel`s share is nearly 80 per cent.


Intel, based in Santa Clara, California, is expected to announce a Celeron processor, running at 1.8 gigahertz, on Wednesday. Intel`s Celeron chips are designed for lower-priced PCs costing $700 and less. Bureau Report