I do video editing, however waiting for this thing to start up is taking forever and I'm not sure it is worth it. The motherboard I have is a server type motherboard and does support ecc memory.
What board is it? AMD 761/762MPX chipset does support ECC. Unfortunately, it has to zero fill the ram during POST. Depending on the amount of RAM, this can be a solid minute (for 2GB) before you see anything on the screen.
The good news is you don't have to have this feature enabled! You can turn off ECC in your BIOS and your startup will be faster.
Startup times are slower with SCSI Host Bus Adapters as well.
Transfer rates should be around 45 MB/S sequential with single large files and much less with folders containing thousands of tiny files such as documents.
Don't worry about the speed difference ECC vs. NON ECC. It's so tiny it's only detectable with benchmarks and good ones at that.
Cheers!