|Dude, when someone asks a followup question, it's asked for a reason. What's up with the -1 rating? And assuming your laptop is a "Dell 1545", I supplied a link...did you bother to look at it? One has a Celeron 900 2.2GHz CPU, the others have a Pentium Dual Core T4200 2.0GHz CPU, so it's a safe bet the T4200 would work in your laptop.|
Laptops are designed to vary the speed of the CPU based on load. This is done to preserve battery power & keep the CPU temp low. So regardless of which CPU you have, it will spend most of it's time running at 1.2GHz - 1.6GHz unless you're running a demanding program. Also, if you're hoping to improve gaming performance, it ain't gonna happen. The weak integrated graphics will hold you back & can't be upgraded. And depending on how much RAM you have, that *may* be where you should be spending your upgrade money.
"I just want to know that can i change my processor with same board or i have to change the mother board too"
Changing the motherboard on a laptop is NOT cost effective...you'd be better off buying a new laptop.
So let me try again - What do you expect to gain by upgrading the CPU?