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Summary:

Kurns & Patrick has posted a new video comparing the Sony U-50 with the U-70. The video shows some simple benchmarks that demonstrate the speed difference between the Celeron and Pentium M processors in the two models. They also compare the standard vs. the extended battery […]

Kurns & Patrick has posted a new video comparing the Sony U-50 with the U-70. The video shows some simple benchmarks that demonstrate the speed difference between the Celeron and Pentium M processors in the two models. They also compare the standard vs. the extended battery for size and thickness, and show the optional case with a built-in stand for working with the U while mobile. I have this case and strongly recommend it if you think you will use the U with the keyboard while out and about.It’s important to note that while their conclusion is that the speed of the two models is “identical” a major advantage of the Pentium M processor is the battery life. The Pentium M is the same processor used in most new laptops you will find and in my experience this processor will provide at least a 20 – 30% battery life increase over the Celeron.

  1. I never actually scrolled down the Kurns & Patrick news page to see the Sneak Peek of the U70 in action, until now. The Sony rep actually mentions that the unit performs longer because the Pentium M handles power consumption much better than the Celeron M, so it appears it’s not just cache and speed that make up the difference of the processors.

    http://videos.serve-me.com/u70penglish.WMV

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  2. I got a Compaq laptop last year and the Pentium M processor provides at least a 30% battery life increase over my previous laptop without the M. It’s significant for a mobile device like this.

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  3. the Celeron in the U50 has the same CPU-core as the Pentium in the U70. the difference in power consumption (if there really is one) is that the Pentium can do speedstep (to 600MHz) and the Celeron cannot. they are both Ultra Low Voltage Mobile prozessors. the difference should not be much.

    maybe someone will run some tests under different loads. if you use the full CPU-power there should be no difference in battery life. under normal using conditions (lots of time with about 20% load or so) the speedstep of the U70 will kick in and probably save some battery. it’s hard to test though. you need a program that uses ‘typical’ amounts of CPU power. something that emulates normal use with peaks of 100% power and longer periods with 20% or so and some idle time in between.

    I just wanted to say you cannot simply compare the ULV Celeron M 900 with an old Pentium. it’s no fair to the processor. this Celeron is almost the same as the ULV Pentium M, it has less L2 cach and it cannot do speedspep. that’s all the difference as far as I know. it has the same core architecture.

    Idefix

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  4. Good points about the M. But what I find in the “real world” usage of laptops in general is most people are typically running one application at a time, email, or word processing, etc., and this means the CPU load is quite low all the time. Speedstep then can play a major role in battery life, which is exactly what it’s designed to do. You may be right that the battery life between the two models of the Sony is similar but I for one will be surprised if the 70 didn’t show significantly improved battery life in everyday mobile use.

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