ASUS Crosshair IV Formula motherboard specifications

Form factor:	ATX 12" x 9.6" / 30.5 cm x 24.5 cm
CPU socket type:	Socket AM3
Chipset:	AMD 890FX AMD SB850
Motherboard features:	CrashFree BIOS 3 EZ Flash 2 MyLogo 3 Q-Connector Q-Fan 2 Q-Shield
Overclocking features:	CPU Parameter Recall
Memory:	Dual-channel
BIOS:	AMI BIOS 16 MB Flash
Expansion slots:	PCI 2.2 x 2 PCIe 2.0 x4 x 1
Rear panel ports:	8-channel Audio External SATA x 1 IEEE 1394a x 1 LAN RJ45 x 1 S/PDIF Out (Optical) x 1 USB 3.0/2.0 port x 2
Included accessories:	I/O Shield x 1 User manual x 1

NOTE: specifications are not complete

ASUS Crosshair IV Formula CPU compatibility list

Part Number	Frequency	Features	BIOS	PCB	Notes
AMD Athlon II X2
ADX215OCK22GQ	215	2.7 GHz, 512 KB L2, Rev. C2, 65W, Socket AM3, ADX215OCK22GQ	0505	Any
ADX225OCK22GM	225	2.9 GHz, 512 KB L2, Rev. C3, 65W, Socket AM3, ADX225OCK22GM	1102	Any
AD235EHDK23GQ	235e	2.7 GHz, 1 MB L2, Rev. C2, 45W, Socket AM3, AD235EHDK23GQ	0505	Any
ADX240OCK23GQ ADX240OCGQBOX	240	2.8 GHz, 1 MB L2, Rev. C2, 65W, Socket AM3, ADX240OCK23GQ	0505	Any
AD240EHDK23GQ	240e	2.8 GHz, 1 MB L2, Rev. C2, 45W, Socket AM3, AD240EHDK23GQ	0505	Any
	245	2.9 GHz, 1 MB L2, Rev. C2, 65W, Socket AM3, ADX245OCK23GM	0505	Any
ADX245OCK23GQ ADX245OCGQBOX	245	2.9 GHz, 1 MB L2, Rev. C2, 65W, Socket AM3, ADX245OCK23GQ	0505	Any
AD245EHDGMBOX AD245EHDK23GM	245e	2.9 GHz, 1 MB L2, Rev. C3, 45W, Socket AM3, AD245EHDK23GM	0505	Any
ADX250OCK23GQ ADX250OCGQBOX	250	3 GHz, 1 MB L2, Rev. C2, 65W, Socket AM3, ADX250OCK23GQ	0505	Any
ADX250OCK23GM	250	3 GHz, 1 MB L2, Rev. C3, 65W, Socket AM3, ADX250OCK23GM	0505	Any
ADX255OCGQBOX ADX255OCK23GQ	255	3.1 GHz, 1 MB L2, Rev. C2, 65W, Socket AM3, ADX255OCK23GQ	0505	Any
ADX255OCK23GM	255	3.1 GHz, 512 KB L2, Rev. C3, 65W, Socket AM3, ADX255OCK23GM	0505	Any
ADX265OCGMBOX ADX265OCK23GM	265	3.3 GHz, 1 MB L2, Rev. C3, 65W, Socket AM3, ADX265OCK23GM
ADX270OCGMBOX ADX270OCK23GM	270	3.4 GHz, 1 MB L2, Rev. C3, 65W, Socket AM3, ADX270OCK23GM	1102	Any
AMD Athlon II X3
AD400EHDK32GI	400e	2.2 GHz, 512 KB L2, Rev. C2, 45W, Socket AM3, AD400EHDK32GI	0505	Any
AD405EHDK32GI	405e	2.3 GHz, 512 KB L2, Rev. C2, 45W, Socket AM3, AD405EHDK32GI	0505	Any
AD405EHDK32GM	405e	2.3 GHz, 512 KB L2, Rev. C3, 45W, Socket AM3, AD405EHDK32GM	0505	Any
AD420EHDGMBOX AD420EHDK32GM	420e	2.6 GHz, 512 KB L2, Rev. C3, 45W, Socket AM3, AD420EHDK32GM	1102	Any
ADX425WFK32GI	425	2.7 GHz, 512 KB L2, Rev. C2, 95W, Socket AM3, ADX425WFK32GI	0505	Any
ADX435WFK32GI	435	2.9 GHz, 512 KB L2, Rev. C2, 95W, Socket AM3, ADX435WFK32GI	0505	Any
ADX435WFK32GM	435	2.9 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX435WFK32GM	0505	Any
ADX440WFGIBOX ADX440WFK32GI	440	3 GHz, 512 KB L2, Rev. C2, 95W, Socket AM3, ADX440WFK32GI	0505	Any
ADX440WFK32GM	440	3 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX440WFK32GM	0505	Any
ADX445WFGMBOX ADX445WFK32GM	445	3.1 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX445WFK32GM	0505	Any
ADX450WFGMBOX ADX450WFK32GM	450	3.2 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX450WFK32GM	1102	Any
ADX455WFGMBOX ADX455WFK32GM	455	3.3 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX455WFK32GM	1102	Any
AMD Athlon II X4
AD600EHDK42GI	600e	2.2 GHz, 512 KB L2, Rev. C2, 45W, Socket AM3, AD600EHDK42GI	0505	Any
AD605EHDK42GI	605e	2.3 GHz, 512 KB L2, Rev. C2, 45W, Socket AM3, AD605EHDK42GI	0505	Any
AD605EHDK42GM	605e	2.3 GHz, 512 KB L2, Rev. C3, 45W, Socket AM3, AD605EHDK42GM	0505	Any
AD615EHDGMBOX AD615EHDK42GM	615e	2.5 GHz, 512 KB L2, Rev. C3, 45W, Socket AM3, AD615EHDK42GM	1102	Any
ADX620WFGIBOX ADX620WFK42GI	620	2.6 GHz, 512 KB L2, Rev. C2, 95W, Socket AM3, ADX620WFK42GI	0505	Any
ADX630WFK42GI ADX630WFGIBOX	630	2.8 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX630WFK42GI	0505	Any
ADX630WFK42GM	630	2.8 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX630WFK42GM	0505	Any
ADX635WFGIBOX ADX635WFK42GI	635	2.9 GHz, 512 KB L2, Rev. C2, 95W, Socket AM3, ADX635WFK42GI	0505	Any
ADX635WFK42GM	635	2.9 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX635WFK42GM	0505	Any
ADX640WFGMBOX ADX640WFK42GM	640	3 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX640WFK42GM	0505	Any
ADX640WFK42GR	640	3 GHz, 512KBx4 L2, Rev. E0, 95W, Socket AM3, ADX640WFK42GR	1902	Any
ADX645WFGMBOX ADX645WFK42GM	645	3.1 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX645WFK42GM	1102	Any
ADX650WFGMBOX ADX650WFK42GM	650	3.2 GHz, 512 KB L2, Rev. C3, 95W, Socket AM3, ADX650WFK42GM	1102	Any
AMD Athlon X2
AD5200OCK22GM	5200	1 MB, Rev. C3, 65W, Socket AM3, AD5200OCK22GM	1102	Any
AMD FX-Series
FD4100WMGUSBX FD4100WMW4KGU	FX-4100	4 cores, 3.6 GHz, Rev. B2G, 95W, Socket AM3+, FD4100WMW4KGU	3027	Any	Beta Support only
FD4170FRW4KGU	FX-4170	4 cores, 4.2 GHz, Rev. B2G, 125W, Socket AM3+, FD4170FRW4KGU	3027	Any	Beta Support only
FD6100WMGUSBX FD6100WMW6KGU	FX-6100	6 cores, 3.3 GHz, Rev. B2G, 95W, Socket AM3+, FD6100WMW6KGU	3027	Any	Beta Support only
FD8100WMGUSBX FD8100WMW8KGU	FX-8100	8 cores, 2.8 GHz, Rev. B2G, 95W, Socket AM3+, FD8100WMW8KGU	3027	Any	Beta Support only
FD8120FRGUBOX FD8120FRW8KGU	FX-8120	8 cores, 3.1 GHz, Rev. B2G, 125W, Socket AM3+, FD8120FRW8KGU	3027	Any	Beta Support only
FD8120WMGUSBX FD8120WMW8KGU	FX-8120	8 cores, 3.1 GHz, Rev. B2G, 95W, Socket AM3+, FD8120WMW8KGU	3027	Any	Beta Support only
FD8150FRGUBOX FD8150FRW8KGU	FX-8150	8 cores, 3.3 GHz, Rev. B2G, 125W, Socket AM3+, FD8150FRW8KGU	3027	Any	Beta Support only
FD8150FRGUBOX FD8150FRGUWOX FD8150FRW8KGU	FX-8150	8 cores, 3.6 GHz, Rev. B2G, 125W, Socket AM3+, FD8150FRW8KGU	3027	Any	Beta Support only
AMD Phenom II X2
HDX545WFK2DGM	545	3 GHz, 512 KB L2, Rev. C3, 80W, Socket AM3, HDX545WFK2DGM	0505	Any
HDX545WFK2DGI HDX545WFGIBOX	545	3 GHz, Rev. C2, 80W, Socket AM3, Dual-Core, HDX545WFK2DGI	0505	Any
HDX550WFK2DGM	550	3.1 GHz, 512 KB L2, Rev. C3, 80W, Socket AM3, HDX550WFK2DGM	0505	Any
HDZ550WFK2DGI HDZ550WFGIBOX	550	3.1 GHz, Rev. C2, 80W, Socket AM3, Dual-Core, HDZ550WFK2DGI	0505	Any
HDZ555WFGMBOX HDZ555WFK2DGM	555	3.2 GHz, 512 KB L2, Rev. C3, 80W, Socket AM3, HDZ555WFK2DGM	0505	Any
HDZ560WFGMBOX HDZ560WFK2DGM	560	3.3 GHz, 512 KB L2, Rev. C3, 80W, Socket AM3, HDZ560WFK2DGM	1102	Any
HDZ565WFGMBOX HDZ565WFK2DGM	565	3.4 GHz, 512 KB L2, Rev. C3, 80W, Socket AM3, HDZ565WFK2DGM	1304	Any
HDZ570WFGMBOX HDZ570WFK2DGM	570	3.5 GHz, 512 KB L2, Rev. C3, 80W, Socket AM3, HDZ570WFK2DGM	1902	Any
AMD Phenom II X3
HD700EOCK3DGI	700e	2.4 GHz, Rev. C2, 65W, Socket AM3, Triple-Core, HD700EOCK3DGI	0505	Any
HD705EOCK3DGI HD705EOCGIBOX	705e	2.5 GHz, Rev. C2, 65W, Socket AM3, Triple-Core, HD705EOCK3DGI	0505	Any
HDX710WFK3DGI HDX710WFGIBOX	710	2.6 GHz, Rev. C2, 95W, Socket AM3, Triple-Core, HDX710WFK3DGI	0505	Any
HDZ715WCJ3DGI	715	2.8 GHz, Rev. C2, 95W, Socket AM2+, Triple-Core, HDZ715WCJ3DGI	0505	Any
HDX720WFK3DGI HDX720WFGIBOX	720	2.8 GHz, Rev. C2, 95W, Socket AM3, Triple-Core, HDX720WFK3DGI	0505	Any
HDZ720WFK3DGI HDZ720WFGIBOX	720	2.8 GHz, Rev. C2, 95W, Socket AM3, Triple-Core, HDZ720WFK3DGI	0505	Any
HDZ740WFK3DGI HDZ740WFGIBOX	740	3 GHz, Rev. C2, 95W, Socket AM3, Triple-Core, HDZ740WFK3DGI	0505	Any
AMD Phenom II X4
HDX805WFK4FGI	805	2.5 GHz, Rev. C2, 95W, Socket AM3, Quad-Core, HDX805WFK4FGI	0505	Any
HDX810WFK4FGI HDX810WFGIBOX	810	2.6 GHz, Rev. C2, 95W, Socket AM3, Quad-Core, HDX810WFK4FGI	0505	Any
HDX820WFK4FGI	820	2.8 GHz, Rev. C2, 95W, Socket AM3, Quad-Core, HDX820WFK4FGI	0505	Any
HDX840WFGMBOX HDX840WFK42GM	840	3.2 GHz, Rev. C3, 95W, Socket AM3, Quad-Core, HDX840WFK42GM	1902	Any
HDX850WFGMBOX HDX850WFK42GM	850	3.3 GHz, Rev. C3, 95W, Socket AM3, Quad-Core, HDX850WFK42GM	1902	Any
HD900EOCK4DGI	900e	2.4 GHz, Rev. C2, 65W, Socket AM3, Quad-Core, HD900EOCK4DGI	0505	Any
HD905EOCK4DGI HD905EOCGIBOX	905e	2.5 GHz, Rev. C2, 65W, Socket AM3, Quad-Core, HD905EOCK4DGI	0505	Any
HD905EOCK4DGM	905e	2.5 GHz, Rev. C3, 65W, Socket AM3, Quad-Core, HD905EOCK4DGM	1304	Any
HDX910WFK4DGI	910	2.6 GHz, Rev. C2, 95W, Socket AM3, Quad-Core, HDX910WFK4DGI	0505	Any
HD910EOCGMBOX HD910EOCK4DGM	910e	2.6 GHz, Rev. C3, 65W, Socket AM3, Quad-Core, HD910EOCK4DGM	0505	Any
HDX925WFK4DGI	925	2.8 GHz, Rev. C2, 95W, Socket AM3, Quad-Core, HDX925WFK4DGI	0505	Any
HDX925WFGMBOX HDX925WFK4DGM	925	2.8 GHz, Rev. C3, 95W, Socket AM3, Quad-Core, HDX925WFK4DGM	0505	Any
HDX945WFK4DGI HDX945WFGIBOX	945	3 GHz, 2 MB L2, Rev. C2, 95W, Socket AM3, Quad-Core, HDX945WFK4DGI	0505	Any
HDX945WFK4DGM	945	3 GHz, 2 MB L2, Rev. C3, 95W, Socket AM3, Quad-Core, HDX945WFK4DGM	0505	Any
HDX945FBK4DGI HDX945FBGIBOX	945	3 GHz, Rev. C2, 125W, Socket AM3, Quad-Core, HDX945FBK4DGI	0505	Any
HDX955FBK4DGI	955	3.2 GHz, Rev. C2, 125W, Socket AM3, Quad-Core, HDX955FBK4DGI	0505	Any
HDZ955FBK4DGI HDZ955FBGIBOX	955	3.2 GHz, Rev. C2, 125W, Socket AM3, Quad-Core, HDZ955FBK4DGI	0505	Any
HDX955FBK4DGM	955	3.2 GHz, Rev. C3, 125W, Socket AM3, Quad-Core, HDX955FBK4DGM	0505	Any
HDZ955FBGMBOX HDZ955FBK4DGM	955	3.2 GHz, Rev. C3, 125W, Socket AM3, Quad-Core, HDZ955FBK4DGM	0505	Any
HDX960WFK4DGM	960	3.3 GHz, Rev. C3, 95W, Socket AM3, Quad-Core, HDX960WFK4DGM	1304	Any
HD96ZTWFGRBOX HD96ZTWFK4DGR	960T	3 GHz, Rev. E0, 95W, Socket AM3, Quad-Core, HD96ZTWFK4DGR	0505	Any
HDZ965FBK4DGI HDZ965FBGIBOX	965	3.4 GHz, Rev. C2, 140W, Socket AM3, Quad-Core, HDZ965FBK4DGI	0505	Any
HDZ965FBGMBOX HDZ965FBK4DGM	965	3.4 GHz, Rev. C3, 125W, Socket AM3, Quad-Core, HDZ965FBK4DGM	0505	Any
HDZ970FBGMBOX HDZ970FBK4DGM	970	3.5 GHz, Rev. C3, 125W, Socket AM3, Quad-Core, HDZ970FBK4DGM	1102	Any
HDZ975FBGMBOX HDZ975FBK4DGM	975	3.6 GHz, Rev. C3, 125W, Socket AM3, Quad-Core, HDZ975FBK4DGM	1304	Any
HDZ980FBGMBOX HDZ980FBK4DGM	980	3.7 GHz, Rev. C3, 125W, Socket AM3, Quad-Core, HDZ980FBK4DGM	2002	Any
AMD Phenom II X6
HDT35TWFK6DGR	1035T	2.6 GHz, Rev. E0, 95W, Socket AM3, 6-Core, HDT35TWFK6DGR	0505	Any
HDT45TWFK6DGR	1045T	2.7 GHz, Rev. E0, 95W, Socket AM3, 6-Core, HDT45TWFK6DGR	1102	Any
HDT55TFBGRBOX HDT55TFBK6DGR	1055T	2.8 GHz, Rev. E0, 125W, Socket AM3, 6-Core, HDT55TFBK6DGR	0505	Any
HDT55TFBGRBOX HDT55TFBK6DGR	1055T	2.8 GHz, Rev. E0, 125W, Socket AM3, 6-Core, HDT55TWFK6DGR	0505	Any
HDT55TWFGRBOX HDT55TWFK6DGR	1055T	2.8 GHz, Rev. E0, 95W, Socket AM3, 6-Core, HDT55TWFK6DGR	0505	Any
HDT65TWFGRBOX HDT65TWFK6DGR	1065T	2.9 GHz, Rev. E0, 95W, Socket AM3, 6-Core, HDT65TWFK6DGR	1102	Any
HDT75TFBGRBOX HDT75TFBK6DGR	1075T	3 GHz, Rev. E0, 125W, Socket AM3, 6-Core, HDT75TFBK6DGR	1102	Any
HDT90ZFBGRBOX HDT90ZFBK6DGR	1090T	3.2 GHz, Rev. E0, 125W, Socket AM3, 6-Core, HDT90ZFBK6DGR	0505	Any
HDE00ZFBGRBOX HDE00ZFBK6DGR	1100T	3.3 GHz, Rev. E0, 125W, Socket AM3, 6-Core, HDE00ZFBK6DGR	1102	Any
AMD Sempron
SDX140HBGQBOX SDX140HBK13GQ	140	2.7 GHz, 1 MB L2, Rev. C2, 45W, Socket AM3, SDX140HBK13GQ	0505	Any
SDX145HBK13GM	145	2.8 GHz, 1 MB L2, Rev. C3, 45W, Socket AM3, SDX145HBK13GM	0505	Any
SDX180HDK22GM	180	2.4 GHz, 512Kx2 L2, Rev. C3, 45W, Socket AM3, SDX180HDK22GM	0502	Any
SDX190HDK22GM	190	2.5 GHz, 512Kx2 L2, Rev. C3, 45W, Socket AM3, SDX190HDK22GM	2002	Any

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.