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Discussion in 'MacBook Pro' started by legaleye3000, Jan 27, 2008.
What's the difference between the current processors and the new penrynn?
The penryn is a core 2 duo.
It uses newer technology than the current merom processors. It's main difference is the fact that the transistors are only 45nm long. This makes them more power efficient and powerful.
Performance wise, it also includes the new SSE4.1 instructions which makes things like encoding go about 40% faster. Other than that, its expected these processors will be around 7-10% faster Ghz for Ghz.
Oh ok- So benefits are longer battery times and more speed?
Is the speed increase significant or minor? Same with battery time?
Penryn Processors will be branded as "Core2Duo" when they are released
The main difference between the processors are the size.
The new penryn processors are smaller in physical size than current ones found in the laptops (45nm). This means they will run faster, cooler and consume less power then current models
Penryn is still a Core 2 Duo, with a die shrink. The shrink will allow for about a 10-15% performance gain, along with lower power consumption and heat output.
For reference, the current (mobile) Core 2 Duo's are known as Merom.
Your wrong. the 45nm refers to the transistor size, not the processor itself. 45nm is VERY small. 1x10^-9 m. The physical size of the merom and penryn are identical.
The battery significance has been reported as quite modest. About 7% increase in overall time. However, the processors aren't the only things that take up a lot of power. The display, hard drive, and superdrive all take up a lot too. They are constantly being made more energy efficient. The screens for instance of the 15" MBPs are LED backlit. It is expected the 17" screens will get this treatment with an update too.
The Penryn speeds are as follows:
X9000 2.8 GHz, 44W, 6MB Cache
T9500 2.6 GHz, 35W, 6MB Cache
T9300 2.5 GHz, 35W, 6MB Cache
T8300 2.4 GHz, 35W, 3MB Cache
T8100 2.1 GHz, 35W, 3MB Cache
The rumoured processors for the Macbook Pro's are the T9300 2.5GHz and the T9500 2.6GHz but I don't think this will offer a large enough gap for the different prices of the Macbook pro's.