The Gigabyte F2A85X-UP4 is a motherboard based on the most high-end chipset for the new FM2 platform, the A85X (codenamed “Hudson D4”). It is targeted to the second-generation APUs from AMD, codenamed “Trinity.” Let’s see what this motherboard has to offer.

APU is a name that AMD coined for their CPUs with integrated video. They are also known as A-series, as models start with the letter “A” (A4, A6, A8, and A10).

There are three chipsets available for the new FM2 platform: A85X, A75, and A55. The A75 and A55 chipsets were released in 2011 with the FM1 platform, which is used by the first-generation of APUs from AMD. The A85X is a new chipset, released with the second-generation APUs. In the table below, we compare the main differences between these three chipsets. As you can see, the main difference between the A85X and the A75 is the addition of two more SATA-600 ports on the A85X.

Feature A85X A75 A55
PCI Express 2.0 x1 4 4 4
USB 1.1 2 2 2
USB 2.0 10 10 14
USB 3.0 4 4 0
SATA-300 0 0 6
SATA-600 8 6 0
FIS-Based Switching Yes Yes No
UMI 2 GB/s 2 GB/s 2 GB/s

“FIS-based switching” is an eSATA port multiplier technology, which allows you to install more than one hard drive to a single SATA port. Click here to learn more. UMI stands for Unified Media Interface; it is the interface that connects the CPU to the chipset.    

AMD APUs have an embedded PCI Express 2.0 controller, with one PCI Express 2.0 x16 port and four PCI Express 2.0 x1 ports. Second-generation APUs allow the x16 port to be divided into two x8 ports. It is important to understand that this is a feature provided by the processor, not by the chipset.

The Gigabyte F2A85X-UP4 supports the Virtu Universal MVP technology, which allows you to combine the performance of the integrated graphics processor available in the CPU with the performance of any video card installed.

So far, Gigabyte has released four motherboards based on the A85X chipset. In the table below, we compare the main specifications of these motherboards. As you can see, the F2A85X-UP4 is, so far, the most complete model offered by Gigabyte. Prices were researched at on the day we published this article.

Specification F2A85X-UP4 FA2A85X-D3H FA285XM-D3H F2A85XM-HD3
Form Factor ATX ATX microATX microATX
Memory Sockets 4 4 4 2
PCI Express 2.0 x16 3 (x16/x0/x4 or x8/x8/x4) 2 (x16/x4) 2 (x16/x4) 2 (x16/x4)
PCI Express 2.0 x1 3 3 1 1
Mini PCI Express 0 0 0 0
Standard PCI 1 2 1 1
CrossFireX Yes No No No
SLI No No No No
SATA-300 0 0 0 0
SATA-600 7 8 8 8
eSATA-300 0 0 0 0
eSATA-600 1 0 0 0
USB 2.0 10 8 8 8
USB 3.0 6 4 4 4
FireWire 0 0 0 0
Bluetooth No No No No
Gigabit Ethernet 1 1 1 1
Wi-Fi No No No No
VGA Yes Yes Yes Yes
DVI-D Yes Yes Yes Yes
HDMI Yes Yes Yes Yes
DisplayPort Yes No No No
Thunderbolt 0 0 0 0
Audio ALC892 ALC892 ALC887 ALC887
Voltage Regulator 6+2 4+2 4+2 3+2
Price USD 130 USD 100 USD 90 NA

In Figure 1, you see the Gigabyte F2A85X-UP4 motherboard. It is based on the standard ATX form factor (12 x 9.6 inches or 305 x 244 mm).

Gigabyte F2A85X-UP4 MotherboardFigure 1: Gigabyte F2A85X-UP4 motherboard


Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.