Having shipped its first While the GeForce GT 435M has a core, shader and memory speed of 650MHz, 1,300MHz, and 800MHz, the GT 540M is set at 672MHz, 1,344MHz, and 900Mhz. Despite the 22MHz, 44MHz, and 100MHz increase, power levels remain the same. The updated part is already shipping to Chinese customers in an Acer notebook with global availability expected next month.