Probably due to limitations of MB tracks to chipset. A hype momentI have been letdown by Dell for this exact same thing. I had a xenon board that I picked up for cheap. The chipset was supposed to be compatible with the CPUs I had from a computer that was constantly throwing RAID errors (suspected bad controller). Everything was supposed to be compatible but dell never bothered to release the BIOS for it to support those specific CPUs.
I'm just 'hypothesizing' like my father always does, so I'm wondering if there is ANY way to just by pass the bios entirely, by installing and booting Win10pro from a NIC card in one of my 3 PCIe 1.0 slots? In UEFI fashion, since I just read that someone decided NOT to UEFI a 2009 machine (for some Linux reasons) that was possible, and my 6710f is from 2010...CMOS is socketed and I've already removed it, and the bios is 'probably programmed' onto the top chip of the 3 larger black 'squares' in the picture?
I can 'buy' another alvorix board still (from 2010), but I'm trying to find a way short of this?
I'm 'waiting' on an HP 410y board with a Phenom 1045 x6 CPU that I can just 'transplant' ALL my accessories to? I've still got a Phenom 1065T (95 watt) that I tried to upgrade my Athlon II 640 from.... Which 'may' be for sale?