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Looking for power supply help

post #1 of 9
Thread Starter 
I just completed a build and have a bad power supply that must be returned so I am rethinking my position and was looking for help. I had a Thermaltake TR2 500W. My setup:
Thermaltake V3 case
Gigabyte 880gm motherboard
AMD Phenom II x 4 955 Black
2 x 4gb Gskill 1600 ram (may increase to 16 total)
2) 2TB hitachi 7200 rpm hd
possibly up to 2 more green drives to total 8TB
4) 120mm fans
DVD writer and maybe add a blu-ray
This will be a small business and home server, media server, and maybe some other light use (dvd or blu-ray encoding)
It will never have a graphics card, coolers or used for gaming
I may play with overclocking as a novelty but nothing too serious.
Does anyone have an idea what kind of wattage I need?

Thanks
post #2 of 9
http://www.newegg.com/Product/Produc...82E16817371033 will do very nicely.
Just save yourself the trouble and avoid Thermaltake PSUs generally speaking, the vast majority of them are crap.
post #3 of 9
300w maybe lower.
post #4 of 9
Quote:
Originally Posted by Shub View Post
http://www.newegg.com/Product/Produc...82E16817371033 will do very nicely.
Just save yourself the trouble and avoid Thermaltake PSUs generally speaking, the vast majority of them are crap.
I've used this PSU before, it's great, but still a bit overkill.
post #5 of 9
You would use at most 200W, if that. The processor can take 125W at peak and the green HDDs would take below 10W each (more like 6-8W) and the others some 12-15W. The board probably tales some 30W, together with the RAM maybe 40W.

Bottom line is that your rig most certainly doesn't need the whole 500W of the Thermaltake TR2, so don't get a PSU with rated wattage more than 4 times the idle power consumption of your rig (which should be around 80-90W). If you get a PSU that is too big, when idle, it would run at below 20%*rated power with horrendous efficiency.
Centurion
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 940 @3.3GHz 1.25V Gigabyte 790X-DS4 XFX 5850 8GB OCZ DDR2-800 
Hard DriveCoolingOSMonitor
Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
PowerCase
400W Silverstone Strider Antec P182 
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Centurion
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 940 @3.3GHz 1.25V Gigabyte 790X-DS4 XFX 5850 8GB OCZ DDR2-800 
Hard DriveCoolingOSMonitor
Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
PowerCase
400W Silverstone Strider Antec P182 
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post #6 of 9
a corsair vx450 watt unit will be more than adequate and its a fsp unit top notch and very well built....
post #7 of 9
According to eXtreme Power Supply Calculator, which does tend to err on the side of caution you only need about a 350 watt PSU. That's with everything you mentioned above, and specced for 16 gigs of ram and both optical drives.
    
CPUMotherboardGraphicsRAM
[INTEL] i7 930, 4.4ghz @ 1.27V [Asus] Rampage III Extreme [Sapphire] 2X 6950's Flashed to 6970's @950/1425 [G.SKILL] Ripjaws X Series 12GB DDR3 @ 2133 
Hard DriveOptical DriveOSMonitor
[Crucial] 2X C300's in Raid0 & [Samsung] 2X 1TB F3 [Hewlett-Packard] DVD-RW [Microsoft] Windows 7 64-bit [Asus] 3X 23" LCD 
KeyboardPowerCaseMouse
[Microsoft] Sidewinder X6 [Kingwin] Lazer LZ-1000 [Xigmatek] Elysium (Being Modded) [Microsoft] Sidewinder 
Mouse Pad
[XTrac] Ripper 
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CPUMotherboardGraphicsRAM
[INTEL] i7 930, 4.4ghz @ 1.27V [Asus] Rampage III Extreme [Sapphire] 2X 6950's Flashed to 6970's @950/1425 [G.SKILL] Ripjaws X Series 12GB DDR3 @ 2133 
Hard DriveOptical DriveOSMonitor
[Crucial] 2X C300's in Raid0 & [Samsung] 2X 1TB F3 [Hewlett-Packard] DVD-RW [Microsoft] Windows 7 64-bit [Asus] 3X 23" LCD 
KeyboardPowerCaseMouse
[Microsoft] Sidewinder X6 [Kingwin] Lazer LZ-1000 [Xigmatek] Elysium (Being Modded) [Microsoft] Sidewinder 
Mouse Pad
[XTrac] Ripper 
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post #8 of 9
Quote:
Originally Posted by Smykster View Post
I've used this PSU before, it's great, but still a bit overkill.
Yes, but it's the cheapest unit one can buy on Newegg without skimping on quality. The 300W SeaSonic units for example also cost $39.99 but cost more on shipping.
post #9 of 9
Thread Starter 
Thank you all so much. I thought I had a pretty good handle on it at about 300 watts. I just wasn't sure what all of that ram, fans, and hard drive space would do. By the way, the 2 main hdds will not be green but the add-ons will be.
I have spent a few hours on here reading about all of these huge power supplies. I assume all of these huge numbers are from graphics cards.
What kind of overclocking can I expect without a cooler (4 good fans should help) and be ultra stable and reliable?
Thanks again
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