The first processors using the brand appeared in notebook computers in early 2007. Those processors, named Pentium T2060, T2080, and T2130, had the 32-bit Pentium M-derived Yonah core, and closely resembled the Core Duo T2050 processor with the exception of having 1 MB of L2 cache instead of 2 MB. All three of them had a 533 MHz FSB connecting the CPU with the memory. Intel developed the Pentium Dual-Core at the request of laptop manufacturers.