DFI PE21-EC motherboard specifications

CPU socket type:

Socket 478

DFI PE21-EC CPU compatibility list

Part Number	Frequency	Features	BIOS	PCB	Notes
Intel Celeron
RK80531RC029128 BX80531P170G128	1.7 GHz	17 x 400 MHz, Willamette	Any	A
RK80531RC033128 BX80531P180G128	1.8 GHz	18 x 400 MHz, Willamette	Any	A
RK80531RC037128 BX80531P190G128	1.9 GHz	19 x 400 MHz, Willamette	Any	A
RK80532RC041128 BX80532RC2000B	2.0 GHz	20 x 400 MHz, Northwood		A	1.525V not supported
RK80532RC045128 BX80532RC2100B	2.1 GHz	21 x 400 MHz, Northwood		A	1.525V not supported
RK80532RC064128 BX80532RC2600B	2.6 GHz	26 x 400 MHz, Northwood	12/19/2002 or Later	A
Intel Pentium 4
RK80532PC021512	1.5 GHz	15 x 400 MHz, Northwood	Any	A
RK80532PC025512 BX80532PC1600D	1.6 GHz	16 x 400 MHz, Northwood	Any	A
RK80532PC029512	1.7 GHz	17 x 400 MHz, Northwood	Any	A
RK80532PC033512 BX80532PC1800D	1.8 GHz	18 x 400 MHz, Northwood	Any	A
RK80532PC037512	1.9 GHz	19 x 400 MHz, Northwood	Any	A
RK80532PC041512 BX80532PC2000D	2.0 GHz	20 x 400 MHz, Northwood		A	1.525V not supported
	2.1 GHz	21 x 400 MHz, Northwood		A	1.525V not supported
RK80532PC049512 BX80532PC2200D	2.2 GHz	22 x 400 MHz, Northwood		A	1.525V not supported
RK80532PE051512 BX80532PE2266D	2.26 GHz	19 x 533 MHz, Northwood		A	1.525V not supported
RK80532PE056512 BX80532PE2400D	2.4 GHz	18 x 533 MHz, Northwood		A	1.525V not supported
RK80532PC056512 BX80532PC2400D	2.4 GHz	24 x 400 MHz, Northwood		A	1.525V not supported
RK80532PC060512 BX80532PC2500D	2.5 GHz	25 x 400 MHz, Northwood		A	1.525V not supported
RK80532PE061512 BX80532PE2533D	2.53 GHz	19 x 533 MHz, Northwood		A	1.525V not supported
RK80532PC064512 BX80532PC2600D	2.6 GHz	26 x 400 MHz, Northwood		A	1.525V not supported
RK80532PE067512 BX80532PE2667D	2.66 GHz	20 x 533 MHz, Northwood		A	1.525V not supported
RK80532PE072512 BX80532PE2800D	2.8 GHz	21 x 533 MHz, Northwood		A	1.525V not supported

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.