about nano ? plz help

hi guy's just asking

what's the difference between a processor built on 90 nano and processor built on 65 nano

is it performance or power consumption or both

thanx in advance

 

A bit of both. Mostly power consumption, but it will usually let processors hit higher clock speeds. But for purchasing? I wouldn't worry about it. Look at the benchmarks to make your choice.

btw, you're talking about a 90nm (nanometer) vs a 65nm process, which is basically the size of the circuit traces in the processor. It's not something you normally need to worry about. Why do you want to know?

 

just trying to learn
i hear guys talking about new processors built on less nano's so i wanted to know what the hype is all about

thanx for the info

 

It's not "less nano's" It's a smaller process, which is measured in nanometers. A 65nm process means that they can put more transistors in a smaller area on a chip than with a 90nm process. This makes the chips run cooler, and increases yield, which also drops the prices of the chips in general.

Just google for a 65 nm process and start reading to see what's really up. It's how I learned.

 

Yep, what he said.
A 90nm chip is one made on a 90nm process, which means each transistor is 90nanometer wide, basically. That means everything can be crammed closer together in less space.

That has a couple of consequences *for the manufacturer*:
- When everything is closer together, signals don't have to travel as far, so it may be possible to clock the chip higher.
- When everything is closer together, less electricity is needed to send a signal between two parts of the chip, meaning it may be possible to lower power consumption.
- When everything is closer together, the chip will quite simply be smaller, which means it may be cheaper to manufacture. (The main factor in determining manufacturing costs is how many working dies can be created from one silicon wafer. So if the chip is half as big, there'll be room for twice as many on a wafer, and it'll cost half as much to produce)

Note the may's in the above though. These are the theoretical benefits.
In the real world, it may not work out so well, at least initially. Smaller processes are obviously harder to do, lots of things can go wrong, so while the chip may be smaller, a larger proportion will be defective, at least initially, which may outweigh the price advantage.

And the smaller the transistors get, the more sensitive they are, and the easier electricity "leaks" which compromises the power savings.

But ultimately, smaller processes mean lower costs for the manufacturer. They *may* pass some of those savings on to the end user, just as the chips *may* end up faster or cooler-running than the previous ones. But you never know.