In a public display of their legendary camaraderie and combined muscle, Intel and Microsoft tried to convince a gathering of reporters in San Francisco yesterday that new Wintel PCs - featuring Intel’s yet-to-be-launched Westmere processors (32nm) and running Windows 7 - will offer vast improvements in the way of faster performance and greater power efficiency.

They demonstrated Windows 7’s frugal power management by running a DVD on two identically configured ThinkPad T400s. The T400 running Windows 7 only consumed 15.4 watts, while its Vista-toting twin hogged 20.2 watts. The executives claimed that this translates into an additional battery life of 1.4 hours.

The impressive power efficiency on offer can be imputed to a technology called Windows timer coalescing, which “helps improve the energy efficiency of periodic software activity by expiring multiple distinct software timers at the same time to increase the average processor idle period."

Image Credit: Cnet