Intel Celeron M

Intel Celeron M The Celeron M is a budget processor based on the Pentium M. Compared to the Pentium M it has only half the L2-Cache and lacks the SpeedStep feature (excl. Banias family). Features 800-1600 MHz tact 400 MHz FSB (Supports 533 MHz with CPU-Pin Hack and DDR2,see this This puts the Clock speed in the 1066-2130 MHz range. Tested with a 370 Dothan) 170 Million Transistors 0.13µm or 0.09µm fabrication process 512 KB or 1 MB L2-Cache QuickStart, Deeper Sleep MMX, SSE, SSE2 instruction sets

Available Types and ThinkPads featuring them

Nr.	Frequency (MHz)	L2-Cache (KB)	FSB (MHz)	XD-Bit	VCore (V)	TDP (W)	ThinkPad Models
Celeron M (Penryn-3M) - Ultra Low Voltage
723	1200	1024	800	•	?	?	X200s
Celeron M (Merom-L)
585	2167	1024	667	•	?	?	R400, SL400, SL500
575	2000	1024	667	•	?	?	R400
Celeron M (Dothan)
380	1600	1024	400	•	1.292	21.0	R51e
370	1500	1024	400	•	...	21.0	R50e, R51e, R52, Z60m, Z60t
360J	1400	1024	400	•	...	21.0	R50e, R51e, Z60m, Z60t
360	1400	1024	400		...	21.0	R50e, R52
350J	1300	1024	400	•	...	21.0
350	1300	1024	400		...	21.0	R50e, R51, R52
Celeron M (Dothan) - Ultra Low Voltage
383	1000	1024	400		...	...
373	1000	512	400		...	...
353	900	512	400		...	...
Celeron M (Banias)
340	1500	512	400		1.35	21.0	R50e, R51
330	1400	512	400		1.35	20.0	R51
320	1300	512	400		1.35	19.0	R50e, R51
310	1200	512	400		1.35	18.0
	800	512	400		1.0	7.0
Celeron M (Banias) - Ultra Low Voltage
333	900	512	400		...	...

Thermal Specifications

The max. Core Temperature is 100°C.

GCC 3.3 Optimization Flags

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium3 -msse2 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

GCC 3.4 and Later

CHOST="i686-pc-linux-gnu" CFLAGS="-O2 -march=pentium-m -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Someone can expirence problems with GCC 3.4.5 The solution can be

CFLAGS="-mcpu=i686 -O3 -pipe"

Speed Step

For using the speed step with the celeron M you must add the module p4-clockmod.

Kernel Options

When compiling the kernel choose the pentium-M processor type