cpu closeness?

ok well currently in my desktop i have an AMD64 3500+ rating at 2.31Ghz. Im in the new Notebook im going to get the T7250 @2.0ghz. how would these 2 compare under tasks the rely on CPU power. (video encoding). are they even comparable?

 

lol....is it the dual core? or just the way its built and stuff?

 

The Core series CPUs are built around the Pentium M and are quite productive per clock cycle.

An example from my library of test results for the running a numerical simulation (CPU intensive):

Notebook T7200 (2GHz) = 2.9 hours
Desktop Athlon 64 3200+ = 3.4 hours
Desktop Pentium 4 2.8GHz = 4.5 hours
Mobile Pentium 4 1.5GHz = 8.5 hours

By extrapolation, the Athlon 64 3500+ is slower than the T7200 so I would expect it to be slightly slower than the T7250 (I don't know how the CPU cache size affects the above results).

However, don't overlook the new CPU being dual core. This means that one core can concentrate on the encoding and leave the other core to handle the background tasks. Further, if the T7250 supports dynamic acceleration, when the second core is idle then the first core will run at 2.2GHz.

John

 

oh ok....i see yup it is supported! so yay!

thanks for the answer!

 

Core built around Pentium-M? How do you figure that John?

 

Common knowledge that the Core series is a pair of Pentium M CPUs with a few tweaks. Developed as a side-line in Israel, if my memory is correct, and proved to be Intel's salvation when the Netburst (P4 series) architecture hit the buffers.

Anyway, rather than just rely on my memory, a quote from Wikipedia:

After this digression, back to the original question about video encoding performance.

I should have remembered to flag up the hard disk I/O as the possible bottleneck to performance in the notebook. Desktop HDDs are usually faster than notebook HDDs so this may not be a constraint in a desktop. However, streaming video off a notebook HDD, through the CPU and back onto the same HDD will mean that the HDD is trying to read and write at the same time, which it may find challenging (I do as well). This could seriously reduce the processing speed. It is worthwhile investing in an external HDD (even a relatively cheap one will do) so the video data being processed is read from one HDD and written to the other.

John

 

oh ok! Makes TotAl Sense thanks Again !