CPUID shows the 2.8GHz Pentiurm 4's 133MHz System Bus with a 21X multiplier. Additionally, we ran hardware monitor on an Asus motherboard we have in the lab and recorded an amazingly chilly 34C core temp. We were skeptical of this figure, so we decided to load the system down with a Prime 95 burn in run. After about 5 minutes the core did reach nearly 47C, so it seems the readings we were getting are at least somewhat accurate. This new stepping seems to run cooler than any Northwood we've seen to date. However, again Intel reported to us that there shouldn't be much of a difference in operating temp with the 2.8GHz chip.