Intel Mobile Pentium III

General Information

max. Freq.	min. Freq.	Bus Speed	high Volt.	low Volt.	ThinkPad Models
Mobile Pentium III-M
1200	800	133	1.40	1.15	T23, X30
1133	733	133	1.40	1.15	R31, T23, X24
1066	733	133	1.40	1.15	X30
1000	733	133	1.40	1.15	R31, T23
933	733	133	1.40	1.15
866	667	133	1.40	1.15	T23
Mobile Pentium III-M (Low Voltage)
933	533	133	1.15	1.05
866	533	133	1.15	1.05	X23?
850	500	100	1.15	1.05
800	533	133	1.15	1.05	X22?, X23?
800	500	100	1.15	1.05
750	450	100	1.15	1.05
733	467	133	1.15	1.05	X22?
Mobile Pentium III-M (Ultra Low Voltage)
866	400	133	1.10	0.95
850	400	100	1.10	0.95
800	400	100	1.10	0.95
750	350	100	1.10	0.95
700	300	100	1.10	0.95
Mobile Pentium III
1000	700	100	1.70	1.35	A22m, A22p, R30, T22
900	700	100	1.70	1.35	A22m, A22p, T22
850	700	100	1.60	1.35	A21p, A22e, A22m, T21
800	650	100	1.60	1.35	A21m, A22m, T21, T22
750	600	100	1.60	1.35	A20p, A21m, i Series 1300, T20, T21
700	550	100	1.60	1.35	A20m, A20p, A21m, i Series 1200, i Series 1300 T20, X21
650	500	100	1.60	1.35	600X, i Series 1300, T20
600	500	100	1.60	1.35	A20m, i Series 1620, S30, S31, X20, X21, TransNote
Mobile Pentium III (Low Voltage)
750	500	100	1.35	1.10
700	500	100	1.35	1.10
600	500	100	1.35	1.10
Mobile Pentium III (Ultra Low Voltage)
600	300	100	1.15	0.975
600	300	100	1.10	0.975
500	300	100	1.10	0.975
Mobile Pentium III - Coppermine
500	-	100	1.60	-	240X, 390X, 570E, 600X, A20m, i Series 1124, i Series 1483, i Series 1492, i Series 1562, i Series 1592
450	-	100	1.60	-	390X, 570E, 600X
400	-	100	1.60	-	390X

You should use the following if you have a mobile Pentium III:

-Os -march=pentium3 -fomit-frame-pointer -pipe