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post #11 of 16
I still think the best method aside from asking the power gurus of OCN is to check actual power measurements.

The GPU and CPU are by far and away the biggest users of wattage, so just check review sites for their measured power usage stressing CPU and/or GPU and go with that. Even those will at times be inflated.

I got a kill-a-watt recently because I'm a sucker for knowledge, and hooked my system into it. Currently a 2600k @ 4.8GHZ (1.425V ) with an HD6950 2GB @ 6970speeds (not unlocked yet tho) and an H50. Running Prime95 + Furmark my system tops out at 365Watts (from the wall). So realistically I could be running one of the highest end systems around, heavily OC'd, on a 300Watt PSU lol.
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post #12 of 16
It would depend on the 300W unit - it would have to be quite a beast.
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post #13 of 16
psu calculators are insurance policies for companies who sell the psus... less failures and more money spent.
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---eYe SeVen---
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post #14 of 16
Some PSU calculators are relatively accurate enough to use if they are used correctly, such as this one:

http://extreme.outervision.com/psucalculatorlite.jsp
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Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
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Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #15 of 16
Quote:
Originally Posted by TwoCables View Post
Some PSU calculators are relatively accurate enough to use if they are used correctly, such as this one:

http://extreme.outervision.com/psucalculatorlite.jsp
I like that calculator, thanks for the link. I also have a Kill-a-watt, maybe I'll run the kill-a-watt on a few of my systems at full load & compare to the calculator linked.
    
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post #16 of 16
Quote:
Originally Posted by Cvalley75 View Post
I like that calculator, thanks for the link. I also have a Kill-a-watt, maybe I'll run the kill-a-watt on a few of my systems at full load & compare to the calculator linked.
If you do that, then take efficiency into account. So if the Kill A Watt is only reading what the PSU is pulling (what your system is pulling from the PSU), then multiply that number by values like .8 for 80%, or .85 for 85%.
It's a computer!
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i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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