laptop processor

[MARKBLACK]

Today a went to purchase a laptop, when I got to the shops I noticed the processors were 1.40/1.60/1.80 MHZ Intel Celeron M 380 this to me appeared to be half the speed of my daughters P4 2.8 I purchased for her two years ago. I asked the seller how come these chips have halved their speed. He reckons with the M 380 chip it’s actually twice the speed that is advertised so 1.40 is actually 2.8MHZ he said Intel have advised them of this. Any thoughts here?

MB

[jlreich]

Mobile CPU's (the Celeron M and Pentium M) are more efficient than their desktop counterparts (P4). Meaning they can get more done in less clocks. Therefor don't need the raw clock speeds that desktop CPU's needed in the past. Which is important for laptops because slower clocks speeds mean a cooler CPU that uses less power.

These attributes are now highly desired in desktop CPU's as well, and are present in the new Intel Core Solo/Core Duo (for laptops) and the Core 2 (for desktops) processors.

He reckons with the M 380 chip it’s actually twice the speed that is advertised so 1.40 is actually 2.8MHZ he said Intel have advised them of this.
Obviously the guy doesn't have a clue. :rolleyes:

In some sense he is right (not by his own fault) in that as mentioned above a mobile CPU can do more in a lower clock speed, but the clock speed is still 1.4GHz.