Intel Mobile Pentium III-M

Intel Mobile Pentium III-M Featuring the Tualatin core the Mobile Pentium III-M is a lot more powerful than the Mobile Pentium III. This is proven in it's rebirth as Pentium M. Features 700-1200 MHz tact 133 MHz FSB (100 on some of the lv and ulv models) 44 Million Transistors 0.13µm fabrication process 0.07µm gates 1.40/1.15 VCore 2x 16 KB L1-Cache 512 KB L2-Cache Enhanced SpeedStep, QuickStart, Deeper Sleep MMX, SSE instruction sets

Available Types and ThinkPads featuring them

Frequency (MHz)		Bus Speed (MHz)	core Voltage (V)		TDP (W)		ThinkPad Models
max.	min.		high	low	high	low
Mobile Pentium III-M
1333	800	133	1.40	1.15	22.0	9.8
1266	800	133	1.40	1.15	22.0	9.8
1200	800	133	1.40	1.15	22.0	9.8	A30p, T23, X30
1133	733	133	1.40	1.15	21.8	9.3	A30, R31, T23, X24
1066	733	133	1.40	1.15	21.0	9.3	X30
1000	733	133	1.40	1.15	20.5	9.3	A30, R31, T23
933	733	133	1.40	1.15	20.1	9.3	A30
866	667	133	1.40	1.15	19.5	8.9	T23
Mobile Pentium III-M (Low Voltage)
1000	533	133	1.15	1.05	10.9	6.1
933	533	133	1.15	1.05	10.5	6.1
866	533	133	1.15	1.05	10.1	6.1	X23?
850	500	100	1.15	1.05	10.0	5.9
800	533	133	1.15	1.05	9.8	5.9	X22?, X23?
750	450	100	1.15	1.05	9.4	5.7
733	466	133	1.15	1.05	9.3	5.8	X22?
Mobile Pentium III-M (Ultra Low Voltage)
866	400	133	1.10	0.95	7	3.4
850	400	100	1.10	0.95	7	3.4
800	400	100	1.10	0.95	7	3.4
750	350	100	1.10	0.95	7	3.1
733	400	133	1.10	0.95	7	3.4
700	300	100	1.10	0.95	7	3.0

Speedstepping

The page on installing Ubuntu on a T23 includes tips for monitoring and managing the processor speed settings.

GCC Optimization Flags

You should use the following if you have a Mobile Pentium III-M:

-Os -march=pentium3m -fomit-frame-pointer -pipe

"-Os" means optimise for size. "-O2" is usually the default and is probably more prefferable. If you're feeling brave you could try using "-O3", but many programs fail to compile with this (attempting to compile binutils, gcc or any other core tools with "-O3" is not recommended)