The lower nm CPU should function on this board.
The lower nm CPU should function on this board.
Looking to enhance an older system. It claims compatibility with Pentium 4 HTs up to the 670, but it actually has a 631 chip while advertising support for the 630. The two CPUs are nearly identical except the 631 uses a 65nm process versus the 90nm in others. If I purchase a 661, should it be treated the same as a 660 by the motherboard? Also, do the single-core 2-thread configurations offer better performance per watt compared to dual-core Pentium D?
It seems you're asking about the specific motherboard and where compatibility details are listed. Could you clarify which system or component you're referring to? That way I can provide accurate information.
The 631 and 661 belong to the same lineage, increasing the likelihood that if the 631 functions, the 661 will as well. It seems they might just represent variations of the same die. Cedar Mill was merely a shrink of Prescott, but the reasons behind it remain unclear. Your board’s compatibility with Core 2 isn’t certain—it could depend on whether you’re working within the standard NetBurst framework or pushing its limits. Even a decent Conroe processor would easily outperform a Pentium 4.
If the chipset matches, the socket remains identical, and the chip passes validation for the board, then yes. However, just as an SFF optiplex on LGA775 won't back a high-end CPU even with the same socket—since it wasn't tested for that board—it won't work either.
It's a Pentium 4 XP gaming rig. The max it handles is a Pentium 4 HT. No Core 2 models. I ran a benchmark comparing a budget mid-range CPU to a high-end P4 and found the mid-range scored 50% higher in Cinebench R15. So yes, they perform better but my mid-range builds are either full towers or lack expansion slots (I appreciate this model fitting under my monitor, SFF).