The Motherboard

So far ECS released three models based on AMD 890GX: A890GXM-A, which is the model we are taking a look; A890GXM-AU, which is identical to A890GXM-A but featuing USB 3.0 ports; and IC890GXM-A.We created a table showing the main differences between these products. As you can see all are ATX-sized motherboards with basically the same features, with A890GXM-A and A890GXM-AU being more complete because they have three PCI Express x16 slots, two Gigabit Ethernet ports and more video connectors. Also A890GXM-A and A890GXM-AU use only solid capacitors, while IC890GXM-A uses solid capacitors only on its voltage regulator circuit, using regular electrolytic capacitors on the rest of the board. A minor difference is on the voltage regulator section, where IC890GXM-A uses a simpler 3+1 phase configuration, while the other two boards use a 6+1 config.

Form Factor ATX ATX ATX
Memory 4 sockets 4 sockets 4 sockets
PCI Express x16 slots Two Three Three
PCI Express x1 slots Two Two Two
PCI slots Two One One
SATA-600 5 ports, 1 eSATA 5 ports, 1 eSATA 5 ports, 1 eSATA
USB 3.0 No No Yes
Audio Codec ALC892 ALC892 ALC892
Networking 1 Gigabit Ethernet port 2 Gigabit Ethernet ports 2 Gigabit Ethernet ports
Video Outputs VGA, DVI-D VGA, DVI-D, HDMI, DisplayPort VGA, DVI-D, HDMI, DisplayPort

In Figure 2 you can have an overall look from ECS A890GXM-A.

ECS A890GXM-A motherboardFigure 2: ECS A890GXM-A motherboard.

As mentioned, this motherboard has 128 MB video memory soldered on the motherboard. In Figure 3, you can see the 1 Gbit GDDR3-1600 chip (1 Gbit = 128 MB) in charge of this feature.

ECS A890GXM-A motherboardFigure 3: 128 MB GDDR3-1600 memory chip.

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.