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ECS AMD690GM-M2 is a socket AM2 motherboard with on-board video based on the latest chipset from AMD/ATI, AMD 690G, also known by its codename RS690. This is the first chipset coming from the collaboration between AMD and ATI, after AMD bought ATI. ECS AMD690GM-M2 motherboard uses a layout almost identical to the one used by ECS RS484M-M, which is based on the Radeon Xpress 1100. It seems that ECS used the same project only replacing the chipset and making minor adjustments.
On the motherboard rear panel, there are PS/2 mouse, PS/2 keyboard, VGA, DVI, four USB 2.0 ports, Gigabit Ethernet port and analog audio inputs and outputs. There is no parallel port on this motherboard, not even thru an I/O bracket. On the other hand a serial port is available thru an I/O bracket, which comes with the board.
For expansion slots, this motherboard provides one PCI Express x16 slot for you to install a “real” video card in the future. It also has one PCI Express x1 slot and two regular PCI slots. This motherboard has four SATA-300 ports and one ATA-133 port, all controlled by the chipset. The SATA ports support RAID 0, 1 and 10. It has 10 USB 2.0 ports (four soldered on the motherboard) but no Firewire ports. It also has Gigabit Ethernet, controlled by a Realtek RTL8110SC chip. This chip is a complete controller, so this motherboard does not use the chipset south bridge chip to control its network interface. This chip is connected to the PCI bus (and not to PCI Express) and since it has a maximum transfer rate of 132 MB/s – which translates to 1 Gbps – achieving 1 Gbps on the Gigabit Ethernet port of this motherboard is very unlikely, as it would be working at the PCI maximum transfer rate.
On the audio section, this motherboard has eight channels provided by the chipset together with a Realtek ALC883 codec. While this codec provides a good output quality (95 dB signal-to-noise ratio and 192 KHz sampling rate), it does not provide a good input quality for today’s standards (85 dB signal-to-noise ratio and 96 KHz sampling rate). Thus this motherboard isn’t recommended for professionally capturing and editing analog audio. For this kind of application look for a motherboard with at least 95 dB SNR on its input. This is really a pitty, since this motherboard is targeted to digital home PCs, where the user may want to capture and edit his (or her) own audio and video files. On the other hand, this motherboard provides full 7.1 analog audio jacks on the rear panel, feature not found on all AMD 690G motherboards around. So you can easily hook an analog 5.1 or 7.1 set of speakers to this motherboard. But this motherboard does not have any on-board SPDIF connector, which is also a shame. As it is targeted to digital home PCs, it should have at least one coaxial SPDIF out to enable users to connect the motherboard directly to a home theater receiver using digital connection. The motherboard has a SPDIF out header, but the board doesn’t come with any SPDIF bracket to use it.
This motherboard has two DDR2-DIMM sockets, accepting up to 4 GB of DDR2-400/667/800 memory. This is probably the major problem with this motherboard. First, in order to achieve the maximum performance possible you need to install two memory modules. Secondly, if in the future you need to add more memory, you will need to remove your old modules and install new ones, as adding more memory keeping the old modules isn’t possible. The electrolytic capacitors used on this motherboard are from two vendors. On the voltage regulator circuit ECS used six capacitors from Toshin Kogyo (TK), but all other capacitors are Taiwanese from OST and G-Luxon, including three on the voltage regulator that are from OST. Even though we always say that ECS should use all-Japanese capacitors on their motherboards at least using some of them is in fact a progress for this company, which at least in the past was focused in finding ways to reduce their costs, which usually was translated by using cheaper components.

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