Intel JN440BX motherboard specifications

CPU socket type:	Slot 1
1. The following board revisions (AA numbers) support these processors: A06449-400 or later. See the board revision note, below, for an explanation. 2. The following board revisions (AA numbers) support these processors: A06449-400 or later. 729002-400 or later. See the board revision note, below, for an explanation. 3. All board revisions support these processors

Intel JN440BX CPU compatibility list

Part Number	Frequency	Features	BIOS	PCB	Notes
Intel Celeron
Celeron 266 BX80523R266000	266 MHz	66 MHz FSB, 0 KB	P07 or greater		Note 3
Celeron 300 BX80523R300000	300 MHz	66 MHz FSB, 0 KB	P07 or greater		Note 3
BX80524R300128 Celeron 300A	300A MHz	66 MHz FSB, 128 KB	P07 or greater		Note 3
BX80524R333128 Celeron 333	333 MHz	66 MHz FSB, 128 KB	P07 or greater		Note 3
BX80524R366128 Celeron 366	366 MHz	66 MHz FSB, 128 KB	P07 or greater		Note 3
BX80524R400128 Celeron 400	400 MHz	66 MHz FSB, 128 KB	P07 or greater		Note 3
Celeron 433	433 MHz	66 MHz FSB, 128 KB	P07 or greater		Note 3
	466 MHz	66 MHz FSB, 128 KB	P07 or greater		Note 3
	500 MHz	66 MHz FSB, 128 KB	P07 or greater		Note 3
BX80524P533128 BX80526F533128 FV80524RX533128 RB80526RX533128	533 MHz	66 MHz FSB, 128 KB	P07 or greater		Note 3
Intel Pentium II
80522PX233512 80522PX233512EC B80522P233512 DC80522PX233512 DC80522PX2335EC	233 MHz	66 MHz FSB, 512 KB	P12 or greater		Note 3
80522PX266512 80522PX266512EC 80523PX266512 80523PX266512PE B80522P266512 B80522P266512E B80523P266512E DC80522PX2665EC	266 MHz	66 MHz FSB, 512 KB	P12 or greater		Note 3
80522PX300512 80522PX300512EC 80523PX300512PE B80522P300512E B80523P300512E	300 MHz	66 MHz FSB, 512 KB	P12 or greater		Note 3
80523PX333512 80523PX333512PE B80523P333512E	333 MHz	66 MHz FSB, 512 KB	P12 or greater		Note 3
80523PY350512 80523PY350512PE 80523PY350512PE B80523P350512E BX80523U350512E	350 MHz	100 MHz FSB, 512 KB	P12 or greater		Note 3
80523PY400512 80523PY400512PE 80523PY400512PE B80523P400512E BX80523U400512E	400 MHz	100 MHz FSB, 512 KB	P12 or greater		Note 3
80523PY450512 80523PY450512PE 80523PY450512PE B80523P450512E BX80523U450512E	450 MHz	100 MHz FSB, 512 KB	P12 or greater		Note 3
Intel Pentium III
80525PY450512 BX80525U450512 BX80525U450512E	450 MHz	100 MHz FSB, 512 KB	P12 or greater		Note 2
80525PY500512 BX80525U500512 BX80525U500512E	500 MHz	100 MHz FSB, 512 KB	P16 or greater		Note 2
80525PY550512 BX80525U550512	550 MHz	100 MHz FSB, 512 KB	P16 or greater		Note 2
	550E MHz	100 MHz FSB, 256 KB	P16 or greater		Note 1
80525PY600512 BX80525U600512	600 MHz	100 MHz FSB, 512 KB	P16 or greater		Note 2
	650E MHz	100 MHz FSB, 256 KB	P16 or greater		Note 1
80526PY700256 BX80526U700256 BX80526U700256E KC80526PY700256	700 MHz	100 MHz FSB, 256 KB	P16 or greater		Note 1
80526PY750256 BX80526U750256 BX80526U750256E KC80526PY750256	750 MHz	100 MHz FSB, 256 KB	P17 or greater		Note 1
80526PY800256 BX80526H800256 BX80526H800256E KC80526PY800256	800 MHz	100 MHz FSB, 256 KB	P17 or greater		Note 1
80526PY850256 BX80526U850256 BX80526U850256E KC80526PY850256	850 MHz	100 MHz FSB, 256 KB	P17 or greater		Note 1

When part numbers are not supplied by motherboard manufacturers, we use best guess approach to determine part numbers based on CPU model, frequency and features. In some cases our guess may be incorrect or incomplete. Please always verify part numbers before committing to buying the CPU.