Product comparison · 2 motherboards

GIGABYTE GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX vs GIGABYTE GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX

25specifications compared
14differ
11identical
23known for one product only

Key differences

Processor socket
- GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX:LGA 775 (Socket T)
- GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX:LGA 1156 (Socket H)
Maximum internal memory
- GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX:4 GB
- GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX:16 GB
Number of SATA connectors
- GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX:2
- GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX:7
Number of Parallel ATA connectors
- GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX:2
- GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX:1
USB 2.0 ports quantity
- GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX:4
- GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX:9
eSATA ports quantity
- GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX:0
- GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX:1
PS/2 ports quantity
- GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX:2
- GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX:1
Firewire (IEEE 1394) ports
- GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX:0
- GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX:1

Side by side

Differences highlightedShow differences only

Comparison of GA-8I865GM-775, GA-P55M-UD4
48 specifications	A GIGABYTE GA-8I865GM-775 motherboard LGA 775 (Socket T) micro ATX Model GA-8I865GM-775 View product	B GIGABYTE GA-P55M-UD4 motherboard Intel® P55 LGA 1156 (Socket H) micro ATX Model GA-P55M-UD4 View product
Processor1 differ
Processor manufacturer	Intel	Intel
Processor socketDiffers	LGA 775 (Socket T)	LGA 1156 (Socket H)
Memory1 differ
Number of memory slots	4	4
Memory voltageKnown for one	Unknown — not stated by the source	1.5 V
ECC сompatibilityKnown for one	Unknown — not stated by the source	Non-ECC
Maximum internal memoryDiffers	4 GB	16 GB
Internal I/O2 differ
Number of SATA connectorsDiffers	2	7
Number of Parallel ATA connectorsDiffers	2	1
S/PDIF out connector	Yes	Yes
Front panel audio connectorKnown for one	Unknown — not stated by the source	Yes
CD/AUX audio in	Yes	Yes
ATX Power connector (24-pin)Known for one	Unknown — not stated by the source	Yes
Power fan connectorKnown for one	Unknown — not stated by the source	Yes
CPU fan connectorKnown for one	Unknown — not stated by the source	Yes
Chassis intrusion connectorKnown for one	Unknown — not stated by the source	Yes
Number of IEEE1394 connectorsKnown for one	Unknown — not stated by the source	1
USB 2.0 connectorsKnown for one	2	Unknown — not stated by the source
Number of COM connectorsKnown for one	1	Unknown — not stated by the source
Rear panel I/O ports6 differ
USB 2.0 ports quantityDiffers	4	9
Ethernet LAN (RJ-45) ports	1	1
eSATA ports quantityDiffers	0	1
PS/2 ports quantityDiffers	2	1
Firewire (IEEE 1394) portsDiffers	0	1
VGA (D-Sub) ports quantityDiffers	1	0
HDMI ports quantity	0	0
DVI-D ports quantity	0	0
Headphone outputsDiffers	3	6
S/PDIF out portKnown for one	Unknown — not stated by the source	Yes
Digital audio optical outKnown for one	Unknown — not stated by the source	1
Microphone inKnown for one	Yes	Unknown — not stated by the source
COM ports quantityKnown for one	1	Unknown — not stated by the source
Network1 differ
Networking featuresDiffers	Gigabit	10/100/1000
Features2 differ
Motherboard form factor	micro ATX	micro ATX
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® P55
Audio chipDiffers	ADI AD1888	Realtek ALC889A
Audio output channelsDiffers	5.1 channels	7.1 channels
Power source type	ATX	ATX
Expansion slots1 differ
PCI Express x4 slotsKnown for one	Unknown — not stated by the source	1
PCI Express x8 slotsKnown for one	Unknown — not stated by the source	1
PCI Express x16 slotsKnown for one	Unknown — not stated by the source	1
PCI slotsDiffers	3	1
Weight & dimensionsidentical
Width	244 mm	244 mm
Depth	244 mm	244 mm
Other featuresidentical
S/PDIF in connectorKnown for one	Unknown — not stated by the source	Yes
Floppy disk drive connectorKnown for one	Unknown — not stated by the source	Yes
AGP x8 slotsKnown for one	1	Unknown — not stated by the source
BIOSidentical
BIOS memory sizeKnown for one	16 Mbit	Unknown — not stated by the source
Packaging contentidentical
Drivers includedKnown for one	Yes	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.

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