EDIT: Although they tested the Turion at 1,35V it nevertheless shows a great potential and lags "only" ~10W AC (~7W DC) behind.
all tests use the same hardware:
2 x Samsung PC-3200 512MB DDR Memory Modules (1GB Total)
nVidia GeForce 6800 GT 256MB (AGP 8x for Pentium-M, PCI Express x16 for Athlon64)
Enermax Noisetaker 2.0 600W Power Supply
Western Digital Raptor 74GB Serial ATA/150 Hard Disk Drive
Plextor PX-712A Ultra ATA DVD ReWritable Drive
Standard 1.44MB Floppy Disk Drive
All wattage figures are AC.
http://www.gamepc.com/labs/view_content ... uso&page=3
P-M 2Ghz AOpen i855GMEm-LFS
77W idle w Speestep
81W idle w/o Speestep
http://www.gamepc.com/labs/view_content ... 479&page=4
P-M 2Ghz Asus + CT-479
100-110W idle w/o Speedstep
Use of adapter and Asus desktop mobo causes 20-30W more power at idle and full load.
http://www.gamepc.com/labs/view_content ... n64&page=4
Turion on nforce 3
97W idle w Powernow
So there are two ways of trying to show that a Turion needs only a bit more power than a P-M:
1. A Turion 800Mhz @0.95V at idle should need next to nothing - except IO power. But this one is also present on the P-M platform. So just take the difference at idle between the Turion and the P-M as extra for the desktop mobo.
I suspect the desktop motherboard to need around the same amount of power at idle and at Prime95. So just add the 20W difference to the ~100W of the P-M at Prime95 and you get 120W. That's only 10W less than the Turion.
2. Calculating with the CT-479 figures above.
Full power: P-M with adapter + desktop mobo needs again around 10W less at full power compared to the Turion.
Idle: About the same (97W vs 110/100W minus 4W Speedstep gain)
note: It's impossible for the CT-479 to suck a large amount of power because it has no heatsink.