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Asrock A75 Pro4 review

Our Rating :
Price when reviewed : £105
inc VAT

Easy setup and room for expansion make this an impressive Socket FM1 motherboard


FM1, ATX, AMD A75 chipset, supports: AMD A6, A8

While Intel changes socket type almost every time it launches a new processor range, AMD has normally been more consistent – the later Socket AM3 Phenom II processors, for example, would also work with Socket AM2+ motherboards with a simple BIOS update.

Desktop processors with the new Llano architecture (AMD calls the new desktop range ‘Lynx’) have a very different architecture from previous AMD chips, not least because there are graphics built onto the chip. They also require a new socket – FM1 – and Asrock’s A75 Pro4 is the first board we’ve seen with this socket type.

Asrock A75 Pro4

It’s relatively expensive for an AMD board, but it has an impressive specification. There are two PCI Express x16 and two PCI Express x1 slots, although you’ll block one of the x1 slots if you fit a dedicated graphics card. There are also two PCI slots for older expansion cards. Storage is taken care of with five SATA3 ports, which is a fairly typical number, but, as with most of the Intel Socket 1155 motherboards we saw in our last components Labs in Shopper 279, there are no IDE or floppy ports. The lack of a floppy port probably won’t bother you, but if you have an older IDE hard disk or optical drive you may want to upgrade or use a SATA to IDE converter, which cost around £8.

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Basic Specifications

Rating *****
Processor socket FM1
Form factor ATX
Size 305x224mm
Processor support AMD A6, A8
Processor external bus 100MHz
Chipset north bridge AMD A75
Chipset south bridge AMD A75
Passively-cooled north bridge yes
Integrated graphics No
Supported memory type DDR3 800, 1066, 1333, 1600, 1866
Maximum memory speed PC3-15000
Memory slots 4
Maximum memory 32GB
Dual-channel support yes

Buying Information

Price £105

Internal Ports

Power connectors 1x 24-pin ATX, 1x 8-pin ATX
PCI-E x16 slots 2
Dual graphics architecture Quad CrossFireX
PCI-E x4 slots 0
PCI-E x1 slots 2
PCI slots 3
Fan headers 5
Floppy ports 0
IDE ports 0
Serial ATA ports 5
RAID chipset (max disks) AMD A75 (5x SATA III, RAID 0, 1, 10)


Wired network ports 1x 10/100/1000
Sound (ports) Realtek ALC892 (5x analogue out, optical S/PDIF)
USB2 ports / headers 6/3
Firewire ports / headers 0/1
Legacy ports serial header
Other ports eSATA, HDMI, DVI, D-Sub
Cables included 2x SATA
Brackets included none
Software included none

Setup and Overclocking

Voltage adjustment CPU/RAM/Chipset
CPU clock max adjustment 250MHz

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