- The ECS RS400-A goes for around $70, which is an absolutely incredible price for an LGA775 motherboard.
- Unbelievably low price
- Supports PCI-Express and AGP
- Supports DDR1 and DDR2
- Quiet - all passively cooled
- Integrated RADEON X300 + TV out
- Good on-board Audio
- Overclocking is very limited
- AGP performance lacks
- Not many options in BIOS
- Mediocre performance
- Only 100 MBit Ethernet
Overclockers don't want this board. The BIOS does not offer many options and ATI's chipset seems to have some issues with overclocking.
However, if you are looking to build a cheap Pentium4 LGA775 system, which will not be overclocked and where price is more important than performance, you could use this board.
Since it uses no fan, its quiet operation make it a good candidate for a media PC. This is where the on-board VGA comes in. The integrated VGA has the performance of an X300, certainly not enough for gaming, but good enough for video playback. Composite TV-out is integrated on the motherboard, so no extra hardware is required here either.
Another use could be to use this board as an intermediate motherboard until you make the switch to PCI-Express and DDR2. You can use your old AGP card and your old DDR1 memory, until you have built up more money to get new hardware.
For a low-profile server the lack of a GigE network port could become an issue, a second ethernet port would help here as well.