Work-per-watt is a meaningless measurement to most people. Most people don't turn off their computer when they are done - they just leave it running and walk away. If your energy saver settings are good, they'll suspend or sleep the computer after a while, but some apps (like iPhoto on my iMac for some reason) induce insomnia.
If you read the original post, you'll see that I admit my math is coarse and worst-case only, and that actual, real-world measurements would most likely be lower than the rough maximum I calculated based on PSU specs.
I recently put my Pismo and my Wallstreet on a Kill-A-Watt and saw that with reasonable processor loads, they both sip about 18W. I got to 45W by charging the battery with a screen on full brightness. So by the work-per-watt measurement, the Pismo would win. But by instantaneous (not Watt-hours, but Watts) measurement, it's a draw.
Peace,
Drew
_________________
Power to the PowerPC!
If you read the original post, you'll see that I admit my math is coarse and worst-case only, and that actual, real-world measurements would most likely be lower than the rough maximum I calculated based on PSU specs.
I recently put my Pismo and my Wallstreet on a Kill-A-Watt and saw that with reasonable processor loads, they both sip about 18W. I got to 45W by charging the battery with a screen on full brightness. So by the work-per-watt measurement, the Pismo would win. But by instantaneous (not Watt-hours, but Watts) measurement, it's a draw.
Peace,
Drew
_________________
Power to the PowerPC!