Although AMD's new Athlon XP processors will hit the stage on Tuesday, the real showstopper will be if the company can get the public to forget about megahertz at the same time. As reported earlier, the Athlon XP offers a number of features not found on previous Athlon desktop processors. For example, the chip consumes less power than current desktop Athlons, allowing PC makers can to insert the chip into more compact computers. Compaq, Fujitsu, Micron and NEC all plan to come out with PCs featuring the new chip. AMD is planning an event on Tuesday in San Francisco to announce the new products, twinned with an appearance by AMD chief executive Jerry Sanders, according to Reuters. It will be launched at the same time in Milan, Italy. AMD issued a short notice that Sanders would be on hand to announce a new strategic initiative and "formally launch a new AMD product". The chipmaker's only problem with the launch is megahertz. AMD has downplayed the usual measurement of chip speed in favor of a new naming plan that implicitly compares its chips to those from competitor Intel. The 1800+ Athlon XP will roughly provide similar performance to Intel's 1.8GHz Pentium 4, according to benchmark testers and analysts. The 1800+ Athlon XP also costs $252 (£176) in volume, $4 less than volume amounts of the rival Intel chip. But the 1800+ runs at 1.53GHz. Similarly, the 1700+, 1600+ and 1500+ Athlon XPs run at, respectively, 1.47GHz, 1.4GHz and 1.3GHz. For years, consumers have used megahertz as one of the primary yardsticks in purchasing decisions. Attempts by Cyrix and other companies to get consumers to focus on other performance measurements have failed in the past. With Intel's Pentium 4 running at 2GHz and going to 2.2GHz at the end of the month, AMD could find itself in an uphill battle in terms of perceived performance and price. "The question is whether AMD can communicate the model number to the public," said Kevin Krewell, an analyst with the Microprocessor Report. "I don't think OEMs (computer makers) are going to pay for the number-rated parity. They will pay for megahertz." To combat megahertz dependency, the company has come up with the new brand and will engage in a massive consumer education project. If anything, though, the company's best weapon might turn out to be the reputation it has built with Athlon. Since the chip debuted in 1999, Athlon has helped transform AMD from a company that sells budget processors to a designer of performance processors. The chip has won numerous awards and allowed the company to boost its market share past 20 percent. Originally due in the first quarter at 1.2GHz, the Athlon XP contains a number of silicon-level enhancements. "The big problem they were running into with the old version was power," said Krewell. The current desktop Athlons consume about 76 watts of power. "It takes a big heat sink" to cool these computers, Krewell said. The chip also includes the full complement of SSE multimedia instructions found on the Pentium III for the first time. These instructions effectively allow a processor to perform similar calculations on several pieces of data at once. Additionally, the new Athlon contains a pre-fetch function in its memory cache that allows the chip to recognise patterns and automatically grab the data needed by the processor before it's actually needed. This way the chip doesn't have to wait for the data when it comes time to perform an operation. By supporting Intel's SSE instructions, AMD's own 3D Now instructions for multimedia performance fade into the past, Krewell said. "There's no reason for software developers to write for 3D Now," he said. The Athlon XP has been a chip of many names. Originally code-named Corvette in 1999, the company switched to "Palomino" after being contacted by General Motors. A version of the Athlon XP was first marketed for notebooks in July under the name "Athlon 4". The same chip core has also appeared in a budget Duron processor from AMD. The chip comes out amid a devastating price war between Intel and AMD that began in March. For the third quarter ending Sept. 30, AMD said it will report a pro forma loss of between $90m and $110m, or 26 cents to 31 cents a share. That projected loss doesn't include restructuring and other charges, expected to be between $80m and $110m. AMD said last month it would lay off 15 percent of its work force. The 1700+ will cost $190 and the 1600+ will cost $160 in volume quantities, while the 1500+ costs $130. See Chips Central for the latest headlines on processors and semiconductors. See the Hardware News Section for full coverage. Have your say instantly, and see what others have said. Click on the TalkBack button and go to the Chips Central forum Let the editors know what you think in the Mailroom. And read other letters.