ECS A785GM-AD3 Black Series Motherboard Review :: Features

01-31-2010 · Category: Motherboards

By Benjamin Sun
  • AMD Phenom II
  • Socket AM3
  • Special ACC
  • ATI Hybrid Graphics Technology
  • EuP Certified
  • HT3.0
  • Dual DDR3 1600OC
  • 15u Gold Contact
  • AMD OverDrive
  • e-SATA
  • SATA II 3.0Gb/s
  • ATA133
  • Gigabit LAN
  • 8 Channel High Definition Audio
  • DVI Output
  • USB 2.0
  • PCI Express 2.0
  • Over-Clocking
  • M.I.B. II
  • ROHS
  • Certified For Windows Vista
  • eJiffy
  • Certified for Windows 7

Part Number A785GM-AD3
Manufacturer ECS
Chipset 785G
North Bridge 785G
Socket Socket AM3
Memory speed DDR3 1600 (OC)/DDR3 1333/DDR3 1066/ DDR3 800
Processor Types Phenom II/Athlon II/ Sempron 100
Number of CPUs 1
QPI 5200MT/s
Memory Type DDR3
Memory Channels Double
Maximum Memory 16GB
External Graphics PCI Express x16
IGP HD 4200
South Bridge SB710
Audio 8-channel
IDE 133/100/66
SCSI None
SATA 3.0 GB/s
RAID 0, 1, 0+1, 5, 10
LAN 10/100/1000 4 LAN Ports
Firewire IEEE 1394a
USB USB 2.0
BIOS AMIBIOS
Form Factor ATX

The A785GM-AD3 uses the 785G+SB710 Northbridge/Southbridge combination. The CPU Socket on the board is a Socket AM3 interface. This means that all AMD AM3 CPUs can be installed on the board. Due to the different pin layouts of the AM2+ and AM3 CPUs, this board cannot install AM2+ CPUs. In any event, the board supports DDR3 memory which is not supported by the AM2+ CPUs.

This board has a really cool feature in that they use 15 micron Gold Contacts. Other motherboards use 5 micron gold contacts, but the 15 micron gold contacts provides protection for the CPU, memory sockets and PCI Express x16 slots. This should provide the highest system stability compared to using the 5 micron gold plating that is found on other motherboards.

The ECS A785GM-AD3 motherboard is based upon AMD’s 785G chipset. This is the latest in a series of integrated graphics chipsets from AMD. The HD 4200 graphics chip is the integrated graphics part on the 785G chipset. The HD 4200 is built on AMD’s 55nm process and has 205 million transistors. The core of the chip has 40 Stream Processors which is the same as found on the HD 4350 discrete graphics core.

The HD 4200 has a clock speed of 500MHz for the core and takes System memory for the memory bandwidth. The chip supports DirectX 10.1 which adds parallel Cube Mapping, multiple MRTs (Multiple Render Targets) and programmable Anti-aliasing sample patterns to the DirectX 10.0 feature set. Other additions to the feature set for DirectX 10.1 include support for 32-bit Floating Point calculations as a requirement and 4x MSAA as a requirement.

You will notice that the HD 4200 does not support HyperMemory nor does the graphics core on the chip have a higher clock speed than the HD 3300 which formed the basis of the RADEON 790GX chipset that preceded the HD 4200. It is interesting to note that the 785 chipset has a lower numbering scheme than the 790GX meaning that it is lower performing but higher feature complete with DirectX 10.1 support and UVD 2 support which is not found on the 790GX.

One feature which many motherboard manufacturers are adding to their motherboards is an alternative operating system for quick booting of the computer without the need to wait for Windows. ECS includes the eJiffy operating system for their A785TGM-AD3 motherboard. eJiffy has the following features including a chat client, VOIP, an Internet browser and a picture viewing/editing utility. Once eJiffy is installed and activated you can do almost everything a modern computer can do except play Windows games and play movies.