Product comparison · 2 motherboards

ASUS C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX vs GIGABYTE GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX

50specifications compared
27differ
23identical
43known for one product only

Key differences

The GIGABYTE GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX has 2 more memory slots than the ASUS C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX (4 vs 2). The GIGABYTE GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX has 16 GB more maximum internal memory than the ASUS C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX (32 GB vs 16 GB). The GIGABYTE GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX has 1 more USB 2.0 connectors than the ASUS C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX (3 vs 2). Only the GIGABYTE GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX has S/PDIF out port. Processor socket: BGA 1023 on the ASUS C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX, LGA 1155 (Socket H2) on the GIGABYTE GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX.

Processor socket
- C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX:BGA 1023
- GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX:LGA 1155 (Socket H2)
Compatible processor series
- C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX:Intel® Celeron® M
- GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX:Intel® Celeron®
Number of memory slots
- C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX:2
- GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX:4
Memory slots type
- C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX:SO-DIMM
- GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX:DIMM
Supported memory clock speeds
- C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX:1066,1333 MHz
- GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX:1066,1333,1600,2800 MHz
Maximum internal memory
- C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX:16 GB
- GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX:32 GB
Parallel processing technology support
- C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX:Not supported
- GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX:2-Way CrossFireX
USB 2.0 connectors
- C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX:2
- GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX:3

Side by side

Differences highlightedShow differences only

Comparison of C8HM70-I/HDMI, GA-Z77X-UD4H
93 specifications	A ASUS C8HM70-I/HDMI Intel® HM70 Express BGA 1023 mini ITX Model C8HM70-I/HDMI View product	B GIGABYTE GA-Z77X-UD4H motherboard Intel® Z77 Express LGA 1155 (Socket H2) ATX Model GA-Z77X-UD4H View product
Processor2 differ
Processor manufacturer	Intel	Intel
Processor socketDiffers	BGA 1023	LGA 1155 (Socket H2)
Compatible processor seriesDiffers	Intel® Celeron® M	Intel® Celeron®
Maximum number of SMP processors	1	1
System bus rateKnown for one	5 GT/s	Unknown — not stated by the source
Processor modelKnown for one	847	Unknown — not stated by the source
Intel Core i3/i5/i7/i9 seriesKnown for one	Unknown — not stated by the source	i3-2xxx, i3-3xxx, i5-2xxx, i5-3xxx, i7-2xxx, i7-3xxx
Memory4 differ
Supported memory types	DDR3-SDRAM	DDR3-SDRAM
Number of memory slotsDiffers	2	4
Memory slots typeDiffers	SO-DIMM	DIMM
Memory channels	Dual-channel	Dual-channel
ECC сompatibility	Non-ECC	Non-ECC
Supported memory clock speedsDiffers	1066,1333 MHz	1066,1333,1600,2800 MHz
Maximum internal memoryDiffers	16 GB	32 GB
Unbuffered memoryKnown for one	Yes	Unknown — not stated by the source
Memory voltageKnown for one	Unknown — not stated by the source	1.5 V
Supported memory module capacitiesKnown for one	Unknown — not stated by the source	4GB, 8GB
Storage controllersidentical
Supported storage drive interfaces	SATA II, SATA III	SATA II, SATA III
Graphics1 differ
Parallel processing technology supportDiffers	Not supported	2-Way CrossFireX
Graphics card familyKnown for one	Intel	Unknown — not stated by the source
Graphics cardKnown for one	HD Graphics	Unknown — not stated by the source
Maximum resolutionKnown for one	2048 x 1536 pixels	Unknown — not stated by the source
OpenGL versionKnown for one	4.1	Unknown — not stated by the source
DirectX versionKnown for one	10	Unknown — not stated by the source
Discrete graphics supportKnown for one	Yes	Unknown — not stated by the source
Internal I/O4 differ
USB 2.0 connectorsDiffers	2	3
USB 3.2 Gen 1 (3.1 Gen 1) connectorsDiffers	0	1
Number of SATA III connectorsDiffers	1	4
Number of SATA II connectorsDiffers	1	4
Number of Parallel ATA connectors	0	0
Front panel audio connector	Yes	Yes
ATX Power connector (24-pin)	Yes	Yes
Number of EATX power connectorsKnown for one	1	Unknown — not stated by the source
CPU fan connector	Yes	Yes
Number of chassis fan connectorsKnown for one	1	Unknown — not stated by the source
Chassis intrusion connectorKnown for one	Yes	Unknown — not stated by the source
S/PDIF out connectorKnown for one	Unknown — not stated by the source	Yes
Power fan connectorKnown for one	Unknown — not stated by the source	Yes
TPM connectorKnown for one	Unknown — not stated by the source	Yes
Rear panel I/O ports6 differ
USB 2.0 ports quantityKnown for one	4	Unknown — not stated by the source
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	2	6
Ethernet LAN (RJ-45) ports	1	1
eSATA ports quantityDiffers	0	2
PS/2 ports quantity	1	1
Firewire (IEEE 1394) ports	0	0
VGA (D-Sub) ports quantity	1	1
HDMI ports quantity	1	1
DVI-D ports quantityDiffers	0	1
DVI-I ports quantityKnown for one	0	Unknown — not stated by the source
DisplayPorts quantityDiffers	0	1
Headphone outputsDiffers	3	2
Microphone in	Yes	Yes
S/PDIF out portDiffers	No	Yes
Digital audio optical outKnown for one	0	Unknown — not stated by the source
Thunderbolt ports quantityKnown for one	0	Unknown — not stated by the source
COM ports quantityKnown for one	0	Unknown — not stated by the source
Parallel ports quantityKnown for one	0	Unknown — not stated by the source
Serial ports quantityKnown for one	0	Unknown — not stated by the source
WiFi-AP antenna jackKnown for one	0	Unknown — not stated by the source
Modem (RJ-11) portsKnown for one	0	Unknown — not stated by the source
Network1 differ
Ethernet LAN	Yes	Yes
Ethernet interface typeDiffers	Gigabit Ethernet	Fast Ethernet, Gigabit Ethernet
LAN controllerKnown for one	Realtek RTL8111F	Unknown — not stated by the source
Wi-FiKnown for one	No	Unknown — not stated by the source
BluetoothKnown for one	No	Unknown — not stated by the source
Features3 differ
Component for	PC	PC
Motherboard form factorDiffers	mini ITX	ATX
Motherboard chipset family	Intel	Intel
Motherboard chipsetDiffers	Intel® HM70 Express	Intel® Z77 Express
Audio chipKnown for one	Realtek ALC887-VD	Unknown — not stated by the source
Audio output channels	7.1 channels	7.1 channels
Cooling typeDiffers	Active	Passive
Power source type	ATX	ATX
Windows operating systems supportedKnown for one	Unknown — not stated by the source	Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Win
Expansion slots3 differ
PCI Express x16 slotsDiffers	1	3
PCI Express configurationsDiffers	1x16	1x4, 1x8, 1x16
PCI Express slots versionDiffers	2.0	2.0, 3.0
PCI Express x1 slotsKnown for one	Unknown — not stated by the source	3
PCI slotsKnown for one	Unknown — not stated by the source	1
BIOS1 differ
BIOS typeDiffers	UEFI AMI	EFI AMI
BIOS memory sizeKnown for one	64 Mbit	Unknown — not stated by the source
ACPI version	2.0a	2.0a
Clear CMOS jumper	Yes	Yes
Processor special featuresidentical
Intel Dual Display Capable TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel® Virtualization Technology (Intel® VT)Known for one	VT-x	Unknown — not stated by the source
Processor with Intel Graphics Technology requiredKnown for one	Yes	Unknown — not stated by the source
Weight & dimensions2 differ
WidthDiffers	170.2 mm	305 mm
DepthDiffers	170.2 mm	244 mm
Packaging contentidentical
Cables includedKnown for one	SATA	Unknown — not stated by the source
Other featuresidentical
Dual Link DVIKnown for one	No	Unknown — not stated by the source
S/PDIF in portKnown for one	No	Unknown — not stated by the source
eSATA/USB 2.0 ports quantityKnown for one	0	Unknown — not stated by the source
PCI Express power connectors (6-pin)Known for one	Unknown — not stated by the source	1

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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