Upgraded the CPU from core 2 duo T5250 to T9300 but the cpuZ & WEI scores went down Sir,I have already made clear in the above links that PGA478 & PPGA478 are the same things just the construction material is different..As for lithography, you must read the Moore's law for transistors.."Moore's law, the observation made by Gordon Moore, co-founder of the Intel Corp., in a 1965 magazine article that the number of transistors per square inch on a microprocessor chip had doubled each year since the integrated circuit had been invented. This led Moore to predict that the number of transistors on a chip would double every 18 months-a time interval he later revised to every two years. Technically an axiom rather than a law, the prediction was subsequently dubbed Moore's law by the American physicist Carver Mead. The law became something of a self-fulfilling prophecy as microchip and electronics manufacturers competed to develop faster, smaller, and cheaper electronic devices; by the early 21st cent., the number of transistors on a typical memory chip had gone far beyond 1 billion. It is generally accepted that technological improvements in miniaturization and microelectronics will reach a point where circuits are only a few atoms wide, making it physically impossible to make them even smaller. To maintain the pace projected by Moore's law, new technologies such as quantum computers, optical switches, and spintronics will need to be developed." So u see.. its more about reducing the size & power reqmt.of transistors with passing time & simultaneously increasing the transistor density..as a consequence,the power dissipation is reduced the size of processor is reduced,its functionality is increased.. Lemme aarrange the power adaptor & then we'll conclude whether its a BIOS issue or not... BTW thanks to @unclewebb ,that by using the throttlestop 5 ,its clear for sure that my processor can work at max speeds with stable temps...just what needs to be discovered is that why this core stepping is not going in Auto mode..