In the following report we present all laptop processors which are available at the market at present

and give a rough classification of the current consumption and the performance of the different architectures.

Intel Pentium M
900 - 1300 MHz, 1-2 MB level 2 Cache, 90nm and 130nm production process, 400 and 533 MHz front Side bus (FSB)
With Intel chip set (855 or 915) and Intel WLAN also available with the name Centrino (name for the package).
In the comparison very fast per megahertz and very modest.
It is also available as a low voltage version with very small current consumption.

Intel Celeron M
800 - 1500 MHz, 512KB - 1 MB level 2 Cache. It is a Pentium M with halved level 2 Cache and limited on FSB 400. The characteristic of this processor is the speed, which is hardly slower than an equivalent Pentium M. However it can change the speed not dynamically like the Pentium M and therefore needs without load more current.
It is also available as Low Voltage Version with very small current consumption.

Intel Mobile Pentium 4 M

2,4 - 3.46 Ghz (in former times starting from 1,4 Ghz) with FSB 533 (in former times 400) and 512KB to 1 MB level 2 Cache. It is produced in 90 - 130 nm production process and is relative slow, but uses much current and heats up considerably per megahertz.

Intel mobile Celeron 4 M
Technically it is a Pentium 4 M however without speed steps and with less level 2 Cache. In contrast to the Celeron M it is very slow, since the long pipeline of architecture needs a large level 2 Cache. Slow, warm and very hungry for current per megahertz.
 
AMD Turion 64
This is a derivative of the Athlon 64 with SSE3 with nx storage protection, 32 and 64 bit support, integrated memory controller for PC3200 memory, mode for low capacity, HT800 and 2 variants ML with 35 Watt and MB with 25 Watt consumption.

Speeds:
MT-30/ML-30 (1.6 GHz 1024 KB L2)
MT-32/ML-32 (1.8 GHz 512 KB L2)
MT-34/ML-34 (1.8 GHz 1024 KB L2)
ML-37 (2.0 Ghz 1MB L2)
Regarding the consumption MT might be very similar to a Pentium M. The speed is moderate and approximately as fast as an Pentium M with equivalent clock speed.

AMD Mobile Athlon 64
2700+ (1,6 Ghz) - 4000+ (2,6 Ghz). The rating is comparable with the clock rates of Pentium 4 M. It is a 32 and 64 bit processor relative fast per megahertz and uses moderately much current (and produces heat). The top versions are DTR (Desktop replacement) versions for large laptops.
 
AMD Mobile Sempron
2800+ to 3000+ mobile Athlon 64 with reduced level 2 Cache; The rating is not comparable with Athlon 64 Rating. A 3000+ Athlon 64 is faster than a 3000+ Sempron. There is no 64 bit support.
 
AMD Mobile Athlon XP-M
Mobile version of the Athlon XP regarding rating comparable with Pentium 4 clock frequencies; Somewhat more slow than Athlon 64 with same rating and no 64 bit support.
 
Transmeta Crusoe

Not as fast as comparable Intel and AMD processors, however very economic current consumption;
 
Transmeta Efficeon
Successor of the Crusoe processor; not as fast as comparable Intel and AMD processors, however very economic current consumption;
 
VIA C3 Nehemiah / C3-M Mobile Nehemiah
VIA Eden / Eden-N (max 7 Watt power input)
VIA C7 / C7-M
Current saving processors, however not as fast as a equivalent Pentium/AMD processor