coppermine T Hi Denniss i m the guy who submitted the edit for the coppermine T that you reverted I can t guarantee ALL BX boards support coppermine Ts but there s no question at least the Abit BX 133 RAID does so it s not accurate to say they are old core new board only as is the impression in the current state Their last released BIOS notes explicitly list support for 1GHz Celerons which are definitely Coppermine Ts Also on this forum there s an excerpt from someone who s had communication from Abit re coppermine T support you have to scroll down no direct link i m pasting it here I think the PIII 1200mhz you guys are seeing is not a Tualatin but a faster PIII called the CopperMine T Check this thread at anandtech Link There is a post from RichieZZZZ there and he posted you need to read HOCP they e mailed abit about it There is and has been confusion about what exactly Tualatin CPUs will work in as we stated earlier It seems as if Tualatin CPUs are not backwards compatible with BX or i815 chipsets When I posted this earlier I got this mail from Don Goff that pointed us to this link which we had posted a month or so ago that states this Supports Intel Coppermine T CPU about their BIOS upgrade for the ABIT BX133 RAID board Admittedly I am a bit confused about this too so we asked ABIT what exactly the deal is and here is their response Kyle OK I have it It is the confusion about CopperMine CPU vs CopperMine T CPU vs Tualatin CPU The CopperMine T was the CPU that was the bridge between the CopperMine and Tualatin platforms The CopperMine T can work in BX boards usually through a BIOS update The Tualatin CPU has a different pinout and simply will not work in a BX board I have confirmed this with our R D and FAE so have to believe that this time it is true Scott