Need help understanding processors

Intel Core 2 Duo > Intel Core Duo > PowerPC G4 > PowerPC G3

Donwloading speeds have nothing to do with your processor. Manipulating videos and photographs, however, are very processor intensive. Apple has now dropped support completely for the G3 processor.

The Core 2 Duo is about 10-15% faster than the Core Duo at the same clock speed. The Core Duo is about 100%+ faster than the G4 at the same clock speed.

Here's a comparison using the mini:
http://www.primatelabs.ca/blog/2007/08/mac-mini-performance-august-2007/

 

Keep in mind that they're coming up with faster processors practically every day. I heard somewhere that processor speed doubles avery three years. In that case, I would buy a new processor every third year and not waste money on every new update.

 

You mean like just being around you heard this?

Not really a hushed rumor, but the lay of the land.

 

Well according to Moore's Law it doubles every two years. Amazingly enough so do software requirements. Mainly by bloated and lazy programming not superior function.

Like in 2001 I could easily run a 320x240 quicktime video on a 233mhz G3 running Mac OS X. Then fastforward to today that same video impregnated in a website as a Flash video and an 800mhz G4 will studder the video and bring use up 100% of the CPU. Progress

To the OP yes it is definitely better just to get the newer technology. If you want the best bang for your buck I would buy from the Apples refurbished store. Generally with used Apples you do not get the same CPU to cash ratio as with refurb or new.

 

I think you misunderstand Moores Law: it states that the number of transistors doubles every 2 years, not doubling in speed every 2 years. They are not the same thing.

 

Okay, I was wrong. It's every two years. I was just too lazy to verify what I said beforehand. Sorry.

And the number of transistors is generally closely enough related to processor speed that it's okay to say that processor speed is doubling. Isn't it? (again, I should probably check my facts)

 

No, clock speeds have hit a wall because of the heat generated. So now they are putting multiple cores, and you'll only see a significant speedup for applications that can be multithreaded.

 

Go for the Core 2 Duo - along with performance improvements, the power consumption has reduced considerably with newer processors (this means better battery life with better performance for laptops). Plus you can also be sure that Leopard and the next version of Mac OS X (and probably the one after) will work on it..if you do retain the Mac for a long time.