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Low Wattage PSU Club - Page 3

post #21 of 25
Quote:
Originally Posted by jdmfish View Post

Appreciate the help, and I hope this kind of talk isn't considered "off topic"...
Ideally, I'd rather stay with the 560 price range ($175-ish A.R.) and under (includes 6850, and 6870).
I don't know if this is the right question to ask - but assuming general gaming use (and the computer is generally on all day 24/7), let's say a couple of hours a day (1-2), general computer use (1-2) hours a day, is there a way to calculate the greater efficiency of the Capstone over the Corsair 430? By that I mean, when will the greater efficiency in the Capstone, "pay for it self"? 6 months? A year?
Is there a formula or something I can use?
I hope this question makes sense.. For instance the H.E. (high efficiency) A/C we recently replaced, we had a general idea on how long it would be, until the greater efficiency (or cost saving) of the new unit essentially payed for itself. That's essentially what I'm asking, in regards to higher efficiency PSU's (gold, platinum.. and beyond?)

Well, there's no way to calculate that without knowing your exact usage pattern and the precise power draw of your system for each load scenario in that pattern smile.gif
A rough estimate could be made but we'll need the price of electricity in your location... generally speaking, the Capstone is twice as efficient as the CX(~80% vs ~90%), so it essentially cuts the wasted power in half smile.gif
post #22 of 25
Maybe 5W savings per hour at idle and 10W per per hour gaming? 5 W * 22 hours + 10W * 2 hours (roughly) = 130 Watt hours = 0.13 kiloWatt hours. Let's say your electric rate is like 12 cents per kW-h? Then you save 0.0156 dollars per day. In a year that's $5.55.

80% vs. 90% efficiency is a bit optimistic since the CX430 V2 gets around 84% efficiency at load gaming levels with an i3-2100 and GTX 560 Ti, and the SF unit will indeed be around 90% at that level. The bigger difference percentage-wise is at idle.

The bigger deal is not the energy savings, but longevity (the savings come from not having to buy a replacement sooner on average). CX430 V2 has the sleeve-bearing fan and lower-end caps, some freak accident could happen with molex -> PCIe adapters getting loose, etc. In the meantime, the Capstone will be quieter acoustically and offer more stable voltages for higher reliability of other components and maybe very slightly better overclocking.
post #23 of 25
Quote:
Originally Posted by mikeaj View Post

Maybe 5W savings per hour at idle and 10W per per hour gaming? 5 W * 22 hours + 10W * 2 hours (roughly) = 130 Watt hours = 0.13 kiloWatt hours. Let's say your electric rate is like 12 cents per kW-h? Then you save 0.0156 dollars per day. In a year that's $5.55.
80% vs. 90% efficiency is a bit optimistic since the CX430 V2 gets around 84% efficiency at load gaming levels with an i3-2100 and GTX 560 Ti, and the SF unit will indeed be around 90% at that level. The bigger difference percentage-wise is at idle.
The bigger deal is not the energy savings, but longevity (the savings come from not having to buy a replacement sooner on average). CX430 V2 has the sleeve-bearing fan and lower-end caps, some freak accident could happen with molex -> PCIe adapters getting loose, etc. In the meantime, the Capstone will be quieter acoustically and offer more stable voltages for higher reliability of other components and maybe very slightly better overclocking.

A lot better you mean.. wink.gif
It's good for >550W continuously smile.gif
post #24 of 25
Wow, you guys are good. Impressive! thumb.gif

+rep (already passed out to unoriginal, lol)
Workstation
(7 items)
 
  
CPUMotherboardGraphicsRAM
Intel i3 2100 Gigabyte Z68MA-D2H-B3 Asus DCII GTX560 GSkill 2x4GB 1600mhz 
Hard DrivePowerCase
Samsung 830 64GB Corsair CX430v2 Lian Li A04B 
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Workstation
(7 items)
 
  
CPUMotherboardGraphicsRAM
Intel i3 2100 Gigabyte Z68MA-D2H-B3 Asus DCII GTX560 GSkill 2x4GB 1600mhz 
Hard DrivePowerCase
Samsung 830 64GB Corsair CX430v2 Lian Li A04B 
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post #25 of 25
Got a 775rig running a 210 with a CM350watt.
Computer
(11 items)
 
  
CPUMotherboardGraphicsRAM
Athlon X4 640 with L3 Unlocked - 4ghz Gigabyte GA-78LMT-USB3 GTX 650 8gb (4x2gb) Corsair Vengance 1600-9-9-9-24 
Hard DriveCoolingOSKeyboard
200gb Hitachi Deskstar NH-D14 Win 7 G710+ 
PowerMouseAudio
Corsair TX650v2 G300 Blue Yeti 
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Computer
(11 items)
 
  
CPUMotherboardGraphicsRAM
Athlon X4 640 with L3 Unlocked - 4ghz Gigabyte GA-78LMT-USB3 GTX 650 8gb (4x2gb) Corsair Vengance 1600-9-9-9-24 
Hard DriveCoolingOSKeyboard
200gb Hitachi Deskstar NH-D14 Win 7 G710+ 
PowerMouseAudio
Corsair TX650v2 G300 Blue Yeti 
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