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<p>Centrinos are slower....don't expect to do much video editing with one of those. If you want speed get a Pentium 4 mobile with Hyper threading technology. Hyper threading basically takes one cpu and emulates it as two. Another words it tricks Windows XP and other specially designed software to think that you have two CPUs instead of one. Twice the work gets done at once =)</p>
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<p>I think you are a little confused. Intel makes three general families of processors:</p>
<p>Celeron: this is the low-end slow chip, used in very inexpensive desktop (and maybe notebooks).</p>
<p>Pentium 4: this is the fast chip, used in faster desktops</p>
<p>Pentium 4M and Pentium M: These are the Centrino chips, designed for laptops.</p>
<p>People get confused because the Pentium 4 chips run at 2.6 to 3.6 mHz clock rates, while the Pentium Mobile chips run at 1.6 to 2.0 mHz, so they assume the Centrino Pentium M chips are "slower". But, in reality, Intel has redesigned the system architechture to run more instructions per clock cycle so that the "slower" clock speed Centrino chipsets are actually faster. </p>
<p>The Pentium 4 desktop chips are big power hogs. They are only capable of an hour or two of battery life and they generate massive amounts of heat. This is a big problem in the tight confines of a laptop. </p>
<p>The Centrium Pentium 4M and Pentium M chips generate much less heat and provide 3 or 4 hours of battery life.</p>
<p>As far as I can tell, all of the Dell Latitude notebooks use the Centrino Pentium M chips, except the el cheapo model that offers a choice of a Pentium 4 or Celeron processor.</p>
<p>Hyperthreading is available on a number of the Intel chipsets. It does simulate the speed of a dual processor system. As a practical matter, it is pretty irrelevant on the most commonly used software. For example, enabling hyperthreading slows down Microsoft Word and Excel. It does provide a modest improvement on some of the complex filters in Adobe Photoshop.</p>
<p>Anyway, to recap: AZ is correct that the latest Pentium 4 is the fastest available processor for a desktop workstation. However, Pentium 4 chips are lousy in notebook due to the extreme heat they generate and excessive power consumption. The prefered notebook setup is Centrino technology with a Pentium M processor. These are still very, very fast computers, not quite as fast as the desktop workstations. However, the slight reduction in speed is more than offset by a notebook that will actually run on a battery for long enough to watch a movie and won't cook from the heat.</p>
<p>Mini: The main advantage to buying the brand that the college has a deal with is from the service end. The college has "premium" vendor status, meaning that the IT department serves as a factory authorized warranty center, with special phone numbers for ordering parts.</p>