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Differences in PSU calculators

post #1 of 4
Thread Starter 
I'm trying to figure out how much power I need to my PC. So I found these two websites.
http://support.asus.com/powersupply.aspx
http://www.extreme.outervision.com/PSUEngine

In order to make the comparison simple, I just chose:
i5-4570
2xDD3 RAM
Nvidia GTX770

What I get from the Asus is 600W and from the the other website = 378W. I think the Asus method is wrong, though I am not sure.

Any ideas?
    
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i5-4570 Asus Z87i-pro MSI Lightning 770 GTX G.Skill Value RAM 8x2GB 
Hard DriveOptical DriveOSMonitor
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KeyboardPowerCaseMouse
MS Ergonomic 4000  Corsair TX650M Bitfenix Prodigy (Black) Japan Edition Logitech M705 
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CPUMotherboardGraphicsRAM
i5-4570 Asus Z87i-pro MSI Lightning 770 GTX G.Skill Value RAM 8x2GB 
Hard DriveOptical DriveOSMonitor
OCZ Synapse, WD Caviar Black 2TB Asus DVD-RW W7 HP Dell U2713HM 
KeyboardPowerCaseMouse
MS Ergonomic 4000  Corsair TX650M Bitfenix Prodigy (Black) Japan Edition Logitech M705 
Audio
ALC1150, Creative T20 SII, Panasoic SA-PM11 HiFi 
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post #2 of 4

Yeah, ASUS is probably using this calculator to help them sell their bigger, more expensive PSUs.

 

The eXtreme Outer Vision calculator is closer to reality and still a little bit bloated. Your gaming power draw will be closer to around 250-325W while your absolute maximum potential (like if you were to run Furmark and Intel Burn Test simultaneously) will run at around 340-350W.

 

So yeah, a good quality-made 400-450W PSU is all this build will need. As a general rule of them, the typical build with just one video card will never need anything 'bigger' than a good quality-made 450W PSU unless you're talking about a heavily-overclocked GTX 780 or HD 7970.

It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #3 of 4
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

Yeah, ASUS is probably using this calculator to help them sell their bigger, more expensive PSUs.

The eXtreme Outer Vision calculator is closer to reality and still a little bit bloated. Your gaming power draw will be closer to around 250-325W while your absolute maximum potential (like if you were to run Furmark and Intel Burn Test simultaneously) will run at around 340-350W.

So yeah, a good quality-made 400-450W PSU is all this build will need. As a general rule of them, the typical build with just one video card will never need anything 'bigger' than a good quality-made 450W PSU unless you're talking about a heavily-overclocked GTX 780 or HD 7970.

Thanks for that. The only problem I see is that the higher end PSU models tend to be PSU's with the higher W.

I'm sticking with a Seasonic G 550W PSU.
    
CPUMotherboardGraphicsRAM
i5-4570 Asus Z87i-pro MSI Lightning 770 GTX G.Skill Value RAM 8x2GB 
Hard DriveOptical DriveOSMonitor
OCZ Synapse, WD Caviar Black 2TB Asus DVD-RW W7 HP Dell U2713HM 
KeyboardPowerCaseMouse
MS Ergonomic 4000  Corsair TX650M Bitfenix Prodigy (Black) Japan Edition Logitech M705 
Audio
ALC1150, Creative T20 SII, Panasoic SA-PM11 HiFi 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5-4570 Asus Z87i-pro MSI Lightning 770 GTX G.Skill Value RAM 8x2GB 
Hard DriveOptical DriveOSMonitor
OCZ Synapse, WD Caviar Black 2TB Asus DVD-RW W7 HP Dell U2713HM 
KeyboardPowerCaseMouse
MS Ergonomic 4000  Corsair TX650M Bitfenix Prodigy (Black) Japan Edition Logitech M705 
Audio
ALC1150, Creative T20 SII, Panasoic SA-PM11 HiFi 
  hide details  
Reply
post #4 of 4
Quote:
Originally Posted by mystvearn View Post


Thanks for that. The only problem I see is that the higher end PSU models tend to be PSU's with the higher W.

I'm sticking with a Seasonic G 550W PSU.

 

There's also the 400W PC Power & Cooling Silencer MK III, the 450W Rosewill 450-M (modular Capstone), the 450W SeaSonic G Series, and a few other modular PSUs I am probably forgetting about.

 

Edit: This list shows more: http://www.overclock.net/t/183810/faq-recommended-power-supplies


Edited by TwoCables - 7/12/13 at 1:28am
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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