Bios for Msi FX5900u256sp

Ok, now I have a question...

I had a MSI 5900U-256 that I flashed w/ a leadtek Bios to a 5950U-256. Is there any reason I should switch over to the MSI bios? The card is working ok, (slight fan problems, but I was going to get aftermarket cooling anyway) and had a pretty decent Overclock on it.