I bought a new CPU for my Intel DG41TY and installed it. It works, yet there is a couple pf problems. The first is that a couple of insructions don't work. SSE4.1 and Intel VT-x and it cant restart. For restart I must shut down PC first and then turn it on again. Many people are had the same problem, they just modded their BIOS updating the microcodes section. I can't do it because of security against uncertified BIOS files.
P.S. I have the latest BIOS for my m/b, it is TYG4110H.86A.0045.2010.0706.1910 dating 07/06/2010, Yet the microcodes there are from 2008.
I have checked compatibility with this processor and the motherboard but unfortunately it is not compatible with this motherboard, you can see the processors compatible with your Intel® Desktop Board DG41TY at the following link:
I'm sorry, I know that you will need to use this processor with this motherboard but if it is not on that list any problem or error can be expected.
You can update the BIOS; you download the latest BIOS version at the following link:
If you have an old BIOS version I recommend updating at least three or four BIOS version before updating to the latest.
You can check the BIOS update instructions here:
The fact that the base CPUID value is the same doesn't matter; the E0 stepping will have different microcode than the C0 stepping (it has different silicon). The BIOS does not have support for this stepping, plain and simple. The board is well past its end-of-life date (it's almost 7 years old) and out of interactive support; support for newer processors will not be forthcoming. The BIO file is secured and cannot be updated external to Intel (and, I am sure, Intel will not compromise on this under any circumstances). Note too that Intel has exited the motherboard business; you won't be purchasing any subsequent desktop board products from them anyway.