Intel Core Duo vs Intel Core 2 Duo

[supanatral]

If I take a movie like shrek and use Handbreak to convert it on my intel core duo iMac, then take it to my intel core 2 duo Macbook Pro, without pulling out a stop watch, it will take about the same amount of time.

However, if I use handbreak to rip an episode of Dinosaurs season 2, it takes 10 minutes per episode on my macbook pro but takes 25 minutes per episode on my iMac.

The version of the program is the exact same. I even copied and pasted Handbreak from my iMac to my MacBook Pro. The rendering settings are the exact same; they are both set to be 150 megabytes per episode. Also, I used the same DVD to render the same episode on both computers.

Any Ideas what the difference is between rendering a movie and rendering a TV show?

[fryke]

Well... The differences between the processors are small. Something in caching, perhaps, plus the 64-bit-ness of the Core2Duo, although I'm not sure handbrake makes any use of it.

But it can also be that a specific DVD has difficulty to spin at full speed on either Mac, meaning that reading data off the DVD can be slower/faster on either machine.

Of course a big issue is also whether the computer has to do anything _else_ at the particular time of encoding.

[ora]

Also you are comparing a 2.16 ghz c2d with 2gb ram with a 1.83 ghz cd with 1.5 gb ram. I guess in the first task the rate limiting step is neither ram nor processor, but in the second it is one fo the two.