7/21    What is the differences among Pentium M and Pentium 3-M, cerelon
        performance wise?  Given the same clock speed which one is better?
        Similiarly, I am looking for one notch above Pentium 3-M, does
        AMD/VIA/Transmeda has chip that outperform p3M by a notch? it doesn't
        necessarily has to be in the same league as P4M.
        \_ go with the Pentium M.  It's designed from the ground up as opposed
           to the 3M and 4M which are closer to desktop CPUs at heart.  I hear
           the Pentium M trounces them anyway.
        \_ don't buy a celeron for anything unless saving $5 *really* means
           that much to you in which case you shouldn't be buying a computer
           anyway.
           \_ I am looking at IBM T-series versus the new IBM X-series.
              I am using company's old IBM X and I am wondering how's
              new IBM X (Pentium M) stack up against IBM T(Pentium 4M)
                        --OP
                \_ Don't look at the X for CPU, look at it for size.  It's
                   comparatively tiny, tremendously robust, and weighs almost
                   nothing.  The T-series has a bigger screen and DVD.  If you
                   are worried about price, get a refurbished one--that's what
                   I have (X-20) and it's brilliant.  -John
                \_ Dewd, the T40 can come with either the Mobile Pentium 4
                   (aka Pentium 4-M) or Pentium M (aka the Centrino CPU).
                   All reviews of the T40 I've seen are with the Pentium M.
                   1.6 GHz Pentium M ~= 2.4 GHz Pentium 4-M.
                   And as the previous poster wrote, the Pentium M was
                   designed from the ground up as a mobile CPU.  The Pentium
                   4-M was based on the Pentium 4 desktop CPU; Intel had
                   not planned for a notebook version until they got
                   caught up in the raw MHz game (consumer:  "This Pentium
                   3 is only 1 GHz, and the Pentium 4 is 2.0 GHz!").
                   Also, the X has a 12" screen; the T40 has a 14" screen but
                   weighs more, as the previous poster wrote.
                   There's also notebooks with an AMD CPU if you want
                   something a step above a Pentium 3-M.  The Fujitsu
                   S2000 and S6000 series are almost identical, except
                   for the CPU; the S2000 has an AMD CPU, and the S6000 has
                   the Pentium M.  They're both new, so you can check
                   performance numbers on http://cnet.com.  My impression is that
                   the Pentium M blows the AMD CPU out of the water in
                   performance and energy consumption.