ECS 661FX-M7

The ECS 661FX-M7 ATX Motherboard is an excellent replacement board or for a good value for your build. This one's compatible with most of the boards and chips already in your box. It's built around the SiS 661FX and SiS 964 chipsets and supports 800/533 MHz FSB Pentium 4 Prescott/Celeron D processors with Hyper-Threading Technology. Its Dual Channel DDR 400 architecture lets you use your current RAM and upgrade the system memory to up to 2 gigabytes.