ECS 651-M(V2.0) motherboard specifications

Form factor:	micro-ATX 244mm x 220mm
CPU socket type:	Socket 478
Chipset:	SiS 651B0 & 962L
Expansion slots:	1 x AGP 4x 1 x CNR 3 x PCI

NOTE: specifications are not complete

ECS 651-M(V2.0) CPU compatibility list

Part Number	Frequency	Features	BIOS	PCB	Notes
Intel Celeron
RK80531RC029128 BX80531P170G128	1.7 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80531P170G128 RK80531RC029128	1.7 GHz	FSB 400 MHz, L2 128 KB
BX80531P170G128 RK80531RC029128	1.7 GHz	L2 128 KB
RK80531RC033128 BX80531P180G128 RK80532RC033128 BX80532RC1800B	1.8 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80531P180G128 BX80532RC1800B RK80531RC033128 RK80532RC033128	1.8 GHz	FSB 400 MHz, L2 128 KB
BX80531P180G128 BX80532RC1800B RK80531RC033128 RK80532RC033128	1.8 GHz	L2 128 KB
BX80531P200G128 BX80532RC2000B RK80531RC041128 RK80532RC041128	2 GHz	FSB 400 MHz, L2 128 KB
BX80531P200G128 BX80532RC2000B RK80531RC041128 RK80532RC041128	2 GHz	L2 128 KB
RK80531RC041128 BX80531P200G128 RK80532RC041128 BX80532RC2000B	2.0 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80531P200G128 BX80532RC2000B RK80531RC041128 RK80532RC041128	2.0 GHz	FSB 400 MHz, L2 128 KB
RK80532RC045128 BX80532RC2100B	2.1 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80532RC2100B RK80532RC045128	2.1 GHz	FSB 400 MHz, L2 128 KB
BX80532RC2100B RK80532RC045128	2.1 GHz	L2 128 KB
RK80532RC049128 BX80532RC2200B	2.2 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80532RC2200B RK80532RC049128	2.2 GHz	FSB 400 MHz, L2 128 KB
BX80532RC2200B RK80532RC049128	2.2 GHz	L2 128 KB
RK80532RC052128 BX80532RC2300B	2.3 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80532RC2300B RK80532RC052128	2.3 GHz	FSB 400 MHz, L2 128 KB
BX80532RC2300B RK80532RC052128	2.3 GHz	L2 128 KB
RK80532RC056128 BX80532RC2400B	2.4 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80532RC2400B RK80532RC056128	2.4 GHz	FSB 400 MHz, L2 128 KB
BX80532RC2400B RK80532RC056128	2.4 GHz	L2 128 KB
RK80532RC060128 BX80532RC2500B	2.5 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80532RC2500B RK80532RC060128	2.5 GHz	FSB 400 MHz, L2 128 KB
BX80532RC2500B RK80532RC060128	2.5 GHz	L2 128 KB
RK80532RC064128 BX80532RC2600B	2.6 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80532RC2600B RK80532RC064128	2.6 GHz	FSB 400 MHz, L2 128 KB
BX80532RC2600B RK80532RC064128	2.6 GHz	L2 128 KB
RK80532RC068128 BX80532RC2700B	2.7 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80532RC2700B RK80532RC068128	2.7 GHz	FSB 400 MHz, L2 128 KB
BX80532RC2700B RK80532RC068128	2.7 GHz	L2 128 KB
RK80532RC072128 BX80532RC2800B	2.8 GHz	128K, 400MHz, Socket 478	2.0f	V2.0
BX80532RC2800B RK80532RC072128	2.8 GHz	FSB 400 MHz, L2 128 KB
BX80532RC2800B RK80532RC072128	2.8 GHz	L2 128 KB
Intel Celeron D
RK80546RE061256 NE80546RE061256 BX80546RE2533C	325	2.53 GHz, 256K, 533MHz, Socket 478, Prescott	2.0f	V2.0
B80546RE061256 BX80546RE2533C NE80546RE061256 RK80546RE061256	325	2.53 GHz, FSB 533 MHz, L2 256 KB, Prescott
B80546RE061256 BX80546RE2533C NE80546RE061256 RK80546RE061256	325	2.53 GHz, L2 256 KB, Prescott
RK80546RE067256 NE80546RE067256 BX80546RE2667C	330	2.66 GHz, 256K, 533MHz, Socket 478, Prescott	2.0f	V2.0
B80546RE067256 BX80546RE2667C NE80546RE067256 RK80546RE067256	330	2.66 GHz, FSB 533 MHz, L2 256 KB, Prescott
B80546RE067256 BX80546RE2667C NE80546RE067256 RK80546RE067256	330	2.66 GHz, L2 256 KB, Prescott
RK80546RE072256 NE80546RE072256 BX80546RE2800C	335	2.8 GHz, 256K, 533MHz, Socket 478, Prescott	2.0f	V2.0
B80546RE072256 BX80546RE2800C NE80546RE072256 RK80546RE072256	335	2.8 GHz, FSB 533 MHz, L2 256 KB, Prescott
B80546RE072256 BX80546RE2800C NE80546RE072256 RK80546RE072256	335	2.8 GHz, L2 256 KB, Prescott
RK80546RE083256 NE80546RE083256 BX80546RE3066C	345	3.06 GHz, 256K, 533MHz, Socket 478, Prescott	2.0f	V2.0
B80546RE083256 BX80546RE3066C NE80546RE083256 RK80546RE083256	345	3.06 GHz, FSB 533 MHz, L2 256 KB, Prescott
B80546RE083256 BX80546RE3066C NE80546RE083256 RK80546RE083256	345	3.06 GHz, L2 256 KB, Prescott
Intel Pentium 4
RK80531PC025G0K BX80531NK160G	1.6 GHz	256K, 400MHz, Socket 478, Willamette	2.0f	V2.0
BX80531NK160G RK80531PC025G0K	1.6 GHz	FSB 400 MHz, L2 256 KB, Willamette
	1.6 GHz	FSB 400 MHz, L2 512 KB, L3 256 KB, Northwood, 0.13 micron
	1.6 GHz	FSB 400 MHz, L2 512 KB, L3 512 KB, Northwood, 0.13 micron
BX80531NK160G RK80531PC025G0K	1.6 GHz	L2 256 KB
BX80531NK160G RK80531PC025G0K	1.6 GHz	L2 256 KB, Willamette
RK80532PC025512 BX80532PC1600D	1.6A GHz	256K, 400MHz, Socket 478, Northwood	2.0f	V2.0
RK80531PC029G0K BX80531NK170G	1.7 GHz	256K, 400MHz, Socket 478, Willamette	2.0f	V2.0
BX80531NK170G RK80531PC029G0K	1.7 GHz	FSB 400 MHz, L2 256 KB, Willamette
BX80531NK170G RK80531PC029G0K	1.7 GHz	L2 256 KB
BX80531NK170G RK80531PC029G0K	1.7 GHz	L2 256 KB, Willamette
RK80531PC033G0K BX80531NK180G	1.8 GHz	256K, 400MHz, Socket 478, Willamette	2.0f	V2.0
BX80531NK180G RK80531PC033G0K	1.8 GHz	FSB 400 MHz, L2 256 KB, Willamette
	1.8 GHz	FSB 400 MHz, L2 512 KB, L3 512 KB, Northwood, 0.13 micron
BX80531NK180G RK80531PC033G0K	1.8 GHz	L2 256 KB
BX80531NK180G RK80531PC033G0K	1.8 GHz	L2 256 KB, Willamette
RK80532PC033512 BX80532PC1800D	1.8A GHz	512K, 400MHz, Socket 478, Northwood	2.0f	V2.0
RK80531PC037G0K BX80531NK190G	1.9 GHz	256K, 400MHz, Socket 478, Willamette	2.0f	V2.0
BX80531NK190G RK80531PC037G0K	1.9 GHz	FSB 400 MHz, L2 256 KB, Willamette
BX80531NK190G RK80531PC037G0K	1.9 GHz	L2 256 KB
BX80531NK190G RK80531PC037G0K	1.9 GHz	L2 256 KB, Willamette
BX80531NK200G RK80531PC041G0K	2 GHz	FSB 400 MHz, L2 256 KB, Willamette
	2 GHz	FSB 400 MHz, L2 512 KB, L3 512 KB, Northwood, 0.13 micron
BX80531NK200G RK80531PC041G0K	2 GHz	L2 256 KB
BX80531NK200G RK80531PC041G0K	2 GHz	L2 256 KB, Willamette
RK80531PC041G0K BX80531NK200G	2.0 GHz	256K, 400MHz, Socket 478, Willamette	2.0f	V2.0
BX80531NK200G RK80531PC041G0K	2.0 GHz	FSB 400 MHz, L2 256 KB, Willamette
	2.0 GHz	FSB 400 MHz, L2 512 KB, L3 512 KB, Northwood, 0.13 micron
RK80532PC041512 BX80532PC2000D	2.0A GHz	512K, 400MHz, Socket 478, Northwood	2.0f	V2.0
RK80532PC049512 BX80532PC2200D	2.2 GHz	512K, 400MHz, Socket 478, Northwood	2.0f	V2.0
BX80532PC2200D RK80532PC049512	2.2 GHz	FSB 400 MHz, L2 512 KB, Northwood
BX80532PC2200D RK80532PC049512	2.2 GHz	L2 512 KB
BX80532PC2200D RK80532PC049512	2.2 GHz	L2 512 KB, Northwood
RK80532PE051512 BX80532PE2266D	2.26 GHz	512K, 533MHz, Socket 478, Northwood	2.0f	V2.0
BX80532PE2266D RK80532PE051512	2.26 GHz	FSB 533 MHz, L2 512 KB, Northwood
BX80532PE2266D RK80532PE051512 RK80546PE051512	2.26 GHz	L2 512 KB
BX80532PE2266D RK80532PE051512	2.26 GHz	L2 512 KB, Northwood
RK80532PC056512 BX80532PC2400D	2.4 GHz	512K, 400MHz, Socket 478, Northwood	2.0f	V2.0
BX80532PC2400D RK80532PC056512	2.4 GHz	FSB 400 MHz, L2 512 KB, Northwood
	2.4 GHz	FSB 533 MHz, L2 1 MB, L3 1 MB, Prescott, 0.09 micron
B80546PE0561M BX80546PE2400E	2.4 GHz	FSB 533 MHz, L2 1 MB, Prescott
	2.4 GHz	FSB 533 MHz, L2 512 KB, L3 512 KB, Northwood, 0.13 micron
B80546PE0561M BX80546PE2400E	2.4 GHz	L2 1 MB, Prescott
BX80532PC2400D BX80532PE2400D BX80532PG2400D RK80532PC056512 RK80532PE056512 RK80532PG056512	2.4 GHz	L2 512 KB
BX80532PC2400D BX80532PE2400D BX80532PG2400D RK80532PC056512 RK80532PE056512 RK80532PG056512	2.4 GHz	L2 512 KB, Northwood
B80546PE0561M BX80546PE2400E	2.4A GHz	1M, 533MHz, Socket 478, Prescott	2.0f	V2.0
RK80532PE056512 BX80532PE2400D	2.4B GHz	512K, 533MHz, Socket 478, Northwood	2.0f	V2.0
RK80532PC060512 BX80532PC2500D	2.5 GHz	512K, 400MHz, Socket 478, Northwood	2.0f	V2.0
BX80532PC2500D RK80532PC060512	2.5 GHz	FSB 400 MHz, L2 512 KB, Northwood
BX80532PC2500D RK80532PC060512	2.5 GHz	L2 512 KB
BX80532PC2500D RK80532PC060512	2.5 GHz	L2 512 KB, Northwood
RK80532PE061512 BX80532PE2533D	2.53 GHz	512K, 533MHz, Socket 478, Northwood	2.0f	V2.0
BX80532PE2533D RK80532PE061512	2.53 GHz	FSB 533 MHz, L2 512 KB, Northwood
BX80532PE2533D RK80532PE061512	2.53 GHz	L2 512 KB
BX80532PE2533D RK80532PE061512	2.53 GHz	L2 512 KB, Northwood
RK80532PC064512 BX80532PC2600D	2.6 GHz	512K, 400MHz, Socket 478, Northwood	2.0f	V2.0
BX80532PC2600D RK80532PC064512	2.6 GHz	FSB 400 MHz, L2 512 KB, Northwood
BX80532PC2600D BX80532PG2600D RK80532PC064512 RK80532PG064512	2.6 GHz	L2 512 KB
BX80532PC2600D BX80532PG2600D RK80532PC064512 RK80532PG064512	2.6 GHz	L2 512 KB, Northwood
RK80532PE067512 BX80532PE2667D	2.66 GHz	512K, 533MHz, Socket 478, Northwood	2.0f	V2.0
BX80532PE2667D RK80532PE067512	2.66 GHz	FSB 533 MHz, L2 512 KB, Northwood
BX80532PE2667D RK80532PE067512	2.66 GHz	L2 512 KB
BX80532PE2667D RK80532PE067512	2.66 GHz	L2 512 KB, Northwood
RK80532PE072512 BX80532PE2800D	2.8 GHz	512K, 533MHz, Socket 478, Northwood	2.0f	V2.0
	2.8 GHz	FSB 533 MHz, L2 1 MB, L3 1 MB, Prescott, 0.09 micron
BX80546PE2800E RK80546PE0721M	2.8 GHz	FSB 533 MHz, L2 1 MB, Prescott
BX80532PE2800D RK80532PE072512	2.8 GHz	FSB 533 MHz, L2 512 KB, Northwood
BX80546PE2800E BX80546PG2800E RK80546PE0721M RK80546PG0721M	2.8 GHz	L2 1 MB, Prescott
BX80532PE2800D BX80532PG2800D RK80532PC072512 RK80532PE072512 RK80532PG072512	2.8 GHz	L2 512 KB
BX80532PE2800D BX80532PG2800D RK80532PC072512 RK80532PE072512 RK80532PG072512	2.8 GHz	L2 512 KB, Northwood
RK80546PE0721M BX80546PE2800E	2.8A GHz	1M, 533MHz, Socket 478, Prescott	2.0f	V2.0
RK80532PE083512 BX80532PE3066D	3.06 GHz	512K, 533MHz, Socket 478, HT, Northwood	2.0f	V2.0
BX80532PE3066D RK80532PE083512	3.06 GHz	FSB 533 MHz, L2 512 KB, Northwood, Hyper-Threading
BX80532PE3066D RK80532PE083512	3.06 GHz	L2 512 KB
BX80532PE3066D RK80532PE083512	3.06 GHz	L2 512 KB, Northwood, Hyper-Threading

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.