Product comparison · 2 motherboards

ASUS P5B motherboard LGA 775 (Socket T) ATX vs GIGABYTE GA-K8N51GMF-9-RH Socket 939 micro ATX

24specifications compared
10differ
14identical
27known for one product only

Key differences

Processor manufacturer
- P5B motherboard LGA 775 (Socket T) ATX:Intel
- GA-K8N51GMF-9-RH Socket 939 micro ATX:AMD
Processor socket
- P5B motherboard LGA 775 (Socket T) ATX:LGA 775 (Socket T)
- GA-K8N51GMF-9-RH Socket 939 micro ATX:Socket 939
USB 2.0 connectors
- P5B motherboard LGA 775 (Socket T) ATX:3
- GA-K8N51GMF-9-RH Socket 939 micro ATX:2
Number of SATA connectors
- P5B motherboard LGA 775 (Socket T) ATX:5
- GA-K8N51GMF-9-RH Socket 939 micro ATX:4
Number of Parallel ATA connectors
- P5B motherboard LGA 775 (Socket T) ATX:1
- GA-K8N51GMF-9-RH Socket 939 micro ATX:0
eSATA ports quantity
- P5B motherboard LGA 775 (Socket T) ATX:1
- GA-K8N51GMF-9-RH Socket 939 micro ATX:0
S/PDIF out port
- P5B motherboard LGA 775 (Socket T) ATX:Yes
- GA-K8N51GMF-9-RH Socket 939 micro ATX:No
Parallel ports quantity
- P5B motherboard LGA 775 (Socket T) ATX:1
- GA-K8N51GMF-9-RH Socket 939 micro ATX:0

Side by side

Differences highlightedShow differences only

Comparison of P5B, GA-K8N51GMF-9-RH
51 specifications	A ASUS P5B motherboard LGA 775 (Socket T) ATX Model P5B View product	B GIGABYTE GA-K8N51GMF-9-RH Socket 939 micro ATX Model GA-K8N51GMF-9-RH View product
Processor2 differ
Processor manufacturerDiffers	Intel	AMD
Processor socketDiffers	LGA 775 (Socket T)	Socket 939
Maximum number of SMP processorsKnown for one	1	Unknown — not stated by the source
Memoryidentical
Number of memory slots	4	4
Maximum internal memoryKnown for one	Unknown — not stated by the source	4 GB
Flash memoryKnown for one	Unknown — not stated by the source	4 MB
Storage controllersidentical
RAID levelsKnown for one	Unknown — not stated by the source	1, 0+1, 5
Internal I/O3 differ
USB 2.0 connectorsDiffers	3	2
Number of SATA connectorsDiffers	5	4
Number of Parallel ATA connectorsDiffers	1	0
S/PDIF out connector	Yes	Yes
Front panel audio connector	Yes	Yes
CD/AUX audio in	Yes	Yes
ATX Power connector (24-pin)	Yes	Yes
Number of EATX power connectorsKnown for one	Unknown — not stated by the source	2
CPU fan connector	Yes	Yes
Number of chassis fan connectors	2	2
Chassis intrusion connector	Yes	Yes
Number of COM connectors	1	1
Number of IEEE1394 connectorsKnown for one	Unknown — not stated by the source	1
Rear panel I/O ports3 differ
USB 2.0 ports quantity	4	4
Ethernet LAN (RJ-45) ports	1	1
eSATA ports quantityDiffers	1	0
PS/2 ports quantity	2	2
Firewire (IEEE 1394) portsKnown for one	Unknown — not stated by the source	1
VGA (D-Sub) ports quantityKnown for one	Unknown — not stated by the source	1
Headphone outputsKnown for one	Unknown — not stated by the source	1
Microphone inKnown for one	Unknown — not stated by the source	Yes
S/PDIF out portDiffers	Yes	No
Parallel ports quantityDiffers	1	0
Serial ports quantityKnown for one	Unknown — not stated by the source	0
Modem (RJ-11) portsKnown for one	Unknown — not stated by the source	0
Features1 differ
Motherboard form factorDiffers	ATX	micro ATX
Power source type	ATX	ATX
Compatible operating systemsKnown for one	Unknown — not stated by the source	Windows Linux
Audio output channelsKnown for one	7.1 channels	Unknown — not stated by the source
Expansion slots1 differ
Expansion slotsDiffers	1x PCI-E x16 3x PCI-E x1 3x PCI 2.2	1 x PCI-Express X16 slot 1 x PCI-Express X1 slot 2 x PCI slots (PCI 2.3 compliant)
Other featuresidentical
Audio outputKnown for one	Unknown — not stated by the source	Realtek ALC880 audio codec
Azalia Digital Header (ADH) connectorKnown for one	Unknown — not stated by the source	No
EZ plug connectorKnown for one	Unknown — not stated by the source	No
Floppy disk drive connector	Yes	Yes
GAME/MIDI connectorKnown for one	Unknown — not stated by the source	No
RAID controller typeKnown for one	Unknown — not stated by the source	NVIDIA
Controller interface typeKnown for one	JMicron JMB363	Unknown — not stated by the source
Special featuresKnown for one	- ASUS AI Gear - ASUS AI Nap - ASUS Q-Fan 2 - ASUS Noise Filter - ASUS Q-Connector - ASUS O.C. Profile - ASUS CrashFree BIOS 3 - ASUS EZ Flash 2	Unknown — not stated by the source
Manageability featuresKnown for one	WfM 2.0, DMI 2.0, WOL @ PME, WOR @ PME, PXE	Unknown — not stated by the source
Networkidentical
Networking featuresKnown for one	Gigabit Ethernet	Unknown — not stated by the source
BIOSidentical
BIOS memory sizeKnown for one	64 Mbit	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	305 mm	Unknown — not stated by the source
DepthKnown for one	245 mm	Unknown — not stated by the source
Packaging contentidentical
Bundled softwareKnown for one	ASUS PC Probe II ASUS Update AI Booster	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

More motherboard comparisons

All motherboard comparisons