An AMD representative denied any substantial architectural tweaks of AMD Athlon 64 processors manufactured 90nm fabrication technology on Monday, rejecting the rumors about higher performance of AMD64 parts produced using more advanced process technology compared to 130nm parts. "There have been no significant changes to processor design between 130nm and 90nm. So expect AMD Athlon 64 3500+ 90nm to perform the same as an AMD Athlon 64 3500+ 130nm part," an AMD spokesman told X-bit labs.
Earlier this year a report at a web-site claimed the new AMD Athlon 64 3500+ processors made using 90nm fabrication process had scored about 5% faster than the same 3500+ chips produced using 130nm process technology in CPUMark99 benchmark. The benchmark measures CPU integer unit and data processing speeds. Another benchmark the web-site had posted, SiSoft"s Sandra, showcased that the forthcoming AMD64 chips are approximately as fast as the current offerings. Unfortunately, conditions of the testing were not completely clear.