Gigabyte H55-UD3H review

Alan Lu
20 Mar 2010
Gigabyte H55-UD3H motherboard
Our Rating 
Price when reviewed 
inc VAT

If you need a LGA1156 motherboard with lots of expansion slots at a reasonable price, Gigabyte's H55-UD3H is a good choice.



LGA1156, ATX, Intel H55 Express chipset, supports: Core i3, Core i5, Core i7

Compact microATX motherboards are all well and good, but they're no substitute for a full-size ATX motherboard if you need the flexibility of lots of expansion slots. Gigabyte's H55-UD3H has plenty – four PCI slots and one PCI Express x1 slot. This is more than many other motherboards we've seen. It unlikely you'll need to add any USB PCI cards, as there are eight USB ports and four headers built-in.

There are six SATA ports for connecting internal storage devices. There's no RAID support though for configuring multiple hard disks for increased performance or data redundancy. This is a little disappointing in a full-size ATX motherboard at this price, although you could opt for software RAID using certain versions of Windows 7.

There's little point in overclocking RAM, but if you feel the need to do so, the H55-UD3H supports boosting DDR3 memory to PC3-17600 speeds if your RAM can handle it. Another largely unnecessary but supported upgrade option is CrossFireX. Two ATI graphics cards can be plugged in, theoretically giving better 3D performance over a single card.

Generally, the performance gains aren't worth the expense though, especially since fitting two graphics cards can obstruct the other expansion card slots. Otherwise, the ports and slots are all widely spaced out, so there's little chance of one component obstructing another.

If you need its plentiful expansion slots, then the H55-UD3H is worth the £20 premium over less flexible microATX motherboards. However, if you care about the number of expansion slots, then you will probably also RAID and the latest storage connectors such as USB3 and SATA III which aren't present here. For those, look to Asus' P7H57D-V Evo. It may cost £50 more, but is even more flexible.

Basic Specifications

Processor socketLGA1156
Form factorATX
Processor supportCore i3, Core i5, Core i7
Processor external bus133MHz (2.0GB/s Direct Media Interface)
Chipset north bridgeIntel H55 Express
Chipset south bridgeIntel H55 Express
Passively-cooled north bridgeyes
Integrated graphicsYes
Supported memory typeDDR3 800/1066/1333/2200
Maximum memory speedPC3-17600
Memory slots4
Maximum memory16GB
Dual-channel supportyes

Buying Information


Internal Ports

Power connectors1x 24-pin ATX, 1x 4-pin ATX
PCI-E x16 slots2
Dual graphics architectureCrossFireX
PCI-E x4 slots0
PCI-E x1 slots1
PCI slots4
Fan headers3
Floppy ports1
IDE ports1
Serial ATA ports6
RAID chipset (max disks)none


Wired network ports1x 10/100/1000
Sound (ports)Realtek ALC889 (6x analogue out, optical S/PDIF)
USB2 ports / headers8/4
Firewire ports / headers0/0
Legacy ports1x PS/2
Other portsHDMI, DVI, VGA
Cables included2x SATA, 1x IDE
Brackets includednone
Software includedNorton Internet Security 2009

Setup and Overclocking

Voltage adjustmentCPU/RAM/Chipset
CPU clock max adjustment600MHz

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