Product comparison · 2 motherboards

ASUS P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX vs GIGABYTE GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX

77specifications compared
21differ
56identical
17known for one product only

Key differences

The GIGABYTE GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX has 2 more memory slots than the ASUS P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX (4 vs 2). The GIGABYTE GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX has 16 GB more maximum internal memory than the ASUS P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX (32 GB vs 16 GB). The GIGABYTE GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX has 2 more USB 2.0 connectors than the ASUS P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX (3 vs 1). ECC сompatibility: ECC & Non-ECC on the ASUS P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX, Non-ECC on the GIGABYTE GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX. Supported memory module capacities: 1GB, 2GB, 4GB, 8GB on the ASUS P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX, 16GB, 1GB, 2GB, 4GB, 8GB on the GIGABYTE GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX.

Number of memory slots
- P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX:2
- GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX:4
ECC сompatibility
- P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX:ECC & Non-ECC
- GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX:Non-ECC
Maximum internal memory
- P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX:16 GB
- GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX:32 GB
Supported memory module capacities
- P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX:1GB, 2GB, 4GB, 8GB
- GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX:16GB, 1GB, 2GB, 4GB, 8GB
USB 2.0 connectors
- P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX:1
- GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX:3
Number of chassis fan connectors
- P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX:1
- GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX:4
USB 2.0 ports quantity
- P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX:6
- GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX:0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
- P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX:2
- GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX:6

Side by side

Differences highlightedShow differences only

Comparison of P8H77-I, GA-Z77X-UD3H
94 specifications	A ASUS P8H77-I Intel H77 LGA 1155 (Socket H2) mini ITX Model P8H77-I View product	B GIGABYTE GA-Z77X-UD3H motherboard Intel Z77 LGA 1155 (Socket H2) ATX Model GA-Z77X-UD3H View product
Memory5 differ
Number of memory slotsDiffers	2	4
ECC сompatibilityDiffers	ECC & Non-ECC	Non-ECC
Supported memory clock speedsDiffers	1066,1333,1600,1800,1866,2000,2133,2200 MHz	1066,1333,1600 MHz
Maximum internal memoryDiffers	16 GB	32 GB
Supported memory module capacitiesDiffers	1GB, 2GB, 4GB, 8GB	16GB, 1GB, 2GB, 4GB, 8GB
Unbuffered memoryKnown for one	Unknown — not stated by the source	Yes
Graphics1 differ
Parallel processing technology supportDiffers	LucidLogix Virtu	2-Way CrossFireX, 2-Way SLI, LucidLogix Virtu
Maximum resolutionKnown for one	2048 x 1536 pixels	Unknown — not stated by the source
Internal I/O2 differ
USB 2.0 connectorsDiffers	1	3
Number of chassis fan connectorsDiffers	1	4
Peripheral (Molex) power connectors (4-pin)Known for one	Unknown — not stated by the source	1
EPS power connector (8-pin)Known for one	Unknown — not stated by the source	Yes
TPM connectorKnown for one	Unknown — not stated by the source	Yes
Number of EATX power connectorsKnown for one	1	Unknown — not stated by the source
Rear panel I/O ports4 differ
USB 2.0 ports quantityDiffers	6	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	2	6
eSATA ports quantityDiffers	0	2
DisplayPorts quantityKnown for one	Unknown — not stated by the source	1
Headphone outputsDiffers	3	6
Network1 differ
Networking featuresDiffers	Gigabit LAN	10/100/1000 Mbit/sec
LAN controllerKnown for one	Realtek RTL8111F	Unknown — not stated by the source
Features2 differ
Motherboard form factorDiffers	mini ITX	ATX
Motherboard chipsetDiffers	Intel H77	Intel Z77
Audio chipKnown for one	Unknown — not stated by the source	VIA VT2021
Compatible operating systemsKnown for one	Unknown — not stated by the source	Windows 7/XP
Expansion slots2 differ
PCI Express x1 slotsKnown for one	Unknown — not stated by the source	3
PCI Express x16 slotsDiffers	1	3
PCI Express configurationsDiffers	1x16	1x4, 1x8, 1x16
PCI slotsKnown for one	Unknown — not stated by the source	1
BIOS1 differ
BIOS typeDiffers	AMI	EFI AMI
Clear CMOS buttonKnown for one	Unknown — not stated by the source	Yes
Processor special featuresidentical
Processor with Intel Graphics Technology requiredKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions2 differ
WidthDiffers	170 mm	305 mm
DepthDiffers	170 mm	244 mm
Other features1 differ
mSATA ports quantityKnown for one	Unknown — not stated by the source	1
Controller 2nd interface typeKnown for one	Unknown — not stated by the source	Marvell 88SE9172
Controller interface typeDiffers	Intel H77	Intel Z77
BIOS switch buttonKnown for one	Unknown — not stated by the source	Yes

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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