post #31 of 31
Quote:
Originally Posted by jonnyGURU View Post
A good example is the PSU's with the "Total Watt Viewer" we had a while back. Acbel, Cooler Master, Thermaltake... They were inaccurate not because of bad programming, but because of environmental variables. They measured AC input and then used an algorithm to calculate DC output. Let's say they assumed the PSU was 80% efficient. Well, we've all learned that PSU's aren't the same efficiency across the board, so the Watt Viewer would only be accurate when the PSU was actually 80% efficient. If the PSU was more or less efficient depending on the load, the Watt Viewer would be exponentially less accurate.
That seems to me that it was a good idea but they were kind of lazy or cheap or both. It's a lot easier to measure at one point (total AC used) than to have to measure at 3 points (DC 12V, 3.3V, 5V). The latter would be much more accurate, but also more difficult and more expensive.
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i7 monsta
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.2GHz] [1.325V] ASUS P6T Deluxe V2 2x XFX 5870 [1000/1250] G.Skill 3x2GB 1600MHz 
Hard DriveOSMonitorKeyboard
X25-M 80GB, 320GB WD Scorpio Black Vista x64 2007FP-3007WFP-2007FP-1080p 32" OCN Ducky Brown 
PowerCaseMouse
Silverstone ST85F-P whiteOut G9 
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Reply