That promise includes a ramp to 1.5-GHz Athlons, currently slated to appear by next January. Of more immediate interest will be the Spitfire and Thunderbird, Athlons with on-chip cache that will rival the new Coppermine chips rival Intel Corp. produces. Sanders confirmed reports that both the Spitfire and Thunderbird will contain a greater amount of on-chip level-2 cache than the Coppermines, allowing them to outperform Intel's chips in data-intensive applications.