Need RAM Help

I'm in the process of building/revamping a Dell Precision T7500. My question is can I use non-ecc ram? If so what's the maximum clock speed? I will be running dual CPUs with riser so how much can I use? Would I benefit from ecc when gaming, editing, and in the future running a server?

Anyone?

Don't mix ECC and non ECC , so if you already have ECC ; keep it .

Otherwise , there is no reason that non-ecc should not work , but don't quote me on this .

Thank you. I'm curious what the maximum frequency I can run is.

it looks like 1333 ... but it would be best to research theĀ Dell Precision T7500 support site

editĀ 

http://www.dell.com/support/home/us/en/19/product-support/product/precision-t7500/manuals

Thanks