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Which of these PSUs should I get?

post #1 of 7
Thread Starter 
I think I'm going to get one of these power supplies. Both are made by good companies.

Seasonic S12 430W with Active PFC
+3.3V@30A, +5V@30A, +12V1@14A, +12V2@15A, -12V@0.8A, +5VSB@2A
http://www.newegg.com/Product/Produc...82E16817151023

FSP Blue Storm 500W with Passive PFC
+3.3V@30A, +5V@28A, +12V1@15A, +12V2@15A, -12V@0.5A, +5Vsb@2.0A
http://www.newegg.com/Product/Produc...82E16817104934


Right now my system only needs 300W or less but I wanted to have some extra for a new video card. For what it's worth, I'm not getting anything crazy like an X1950XTX or an 8800GTX. Probably something in the $200 or less range that doesn't consume a ton of power.
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Core 2 Quad Q6600 ASUS P5E X38 8800Ultra OC Crucial Ballistix 2GB 
Hard DriveMonitorKeyboardPower
Western Digital Raptor Samsung 940BX nord lead 2X Seasonic S12 650W 
Case
Lian Li PC-65B 
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Core 2 Quad Q6600 ASUS P5E X38 8800Ultra OC Crucial Ballistix 2GB 
Hard DriveMonitorKeyboardPower
Western Digital Raptor Samsung 940BX nord lead 2X Seasonic S12 650W 
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Lian Li PC-65B 
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post #2 of 7
There both good PSU's. However if i was to reccomend one out of the two it would be the FSP matey. Its a very close match but FSP just pulls ahead.
post #3 of 7
I'd go with the Seasonic. Seasonic uses an independant rail system, so it REALLY puts out 29 amps on the 12v rails, whereas the FSP probably puts out around 27-28. Also, Fishie36 has run his system (overclocked X2 3800+, X1800XT 512) for a long time off of the Seasonic 430, and his system is pretty robust.
post #4 of 7
Let me throw another option in:

SILVERSTONE SST-ST50EF ATX12V 500W Power Supply $87.50
+3.3@30A,+5V@30A,+12v1@18A,+12V2@18A,-12V2@0.5A,+5VSB@3.0A
Max load on the 12V rails: 35A (according to Silverstone's website)

Max load on the 12V rails for the Seasonic: 29A

Max load on the 12V rails for the FSP: Probably 29A also (checking)

Given the available current and the quality of the Silverstone brand, I'd say that's the best pick in this price range (the other two close behind though)
    
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CPUMotherboardGraphicsRAM
E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
Hard DriveOptical DriveOSMonitor
250GB WD SATA None Windows XP Pro 32-bit HP Pavilion f1703 
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post #5 of 7
Thread Starter 
Which has the most stable voltages with least fluctuation? I want to have stable voltages since I have a fairly high overclock. Does active PFC reduce fluctuations in voltage?
Computer
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CPUMotherboardGraphicsRAM
Core 2 Quad Q6600 ASUS P5E X38 8800Ultra OC Crucial Ballistix 2GB 
Hard DriveMonitorKeyboardPower
Western Digital Raptor Samsung 940BX nord lead 2X Seasonic S12 650W 
Case
Lian Li PC-65B 
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Computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Quad Q6600 ASUS P5E X38 8800Ultra OC Crucial Ballistix 2GB 
Hard DriveMonitorKeyboardPower
Western Digital Raptor Samsung 940BX nord lead 2X Seasonic S12 650W 
Case
Lian Li PC-65B 
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post #6 of 7
Either of these PSUs should be rock solid. I don't think any of these will show any fluctuations higher than like 0.2V or so (if that).

We're looking at quality stuff here.... all three are reputable brands, and known for building quality stuff
    
CPUMotherboardGraphicsRAM
E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
Hard DriveOptical DriveOSMonitor
250GB WD SATA None Windows XP Pro 32-bit HP Pavilion f1703 
KeyboardPowerCaseMouse
N/A Corsair HX520 Coolermaster Cavalier N/A 
Mouse Pad
N/A 
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CPUMotherboardGraphicsRAM
E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
Hard DriveOptical DriveOSMonitor
250GB WD SATA None Windows XP Pro 32-bit HP Pavilion f1703 
KeyboardPowerCaseMouse
N/A Corsair HX520 Coolermaster Cavalier N/A 
Mouse Pad
N/A 
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post #7 of 7
Thread Starter 
Alright, I ended up buying the Seasonic 430 with the 29A 12v rails. Can I run virtually any single graphics card I want? My system currently uses less than 300W at peak if that helps you answer.
Computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Quad Q6600 ASUS P5E X38 8800Ultra OC Crucial Ballistix 2GB 
Hard DriveMonitorKeyboardPower
Western Digital Raptor Samsung 940BX nord lead 2X Seasonic S12 650W 
Case
Lian Li PC-65B 
  hide details  
Reply
Computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Quad Q6600 ASUS P5E X38 8800Ultra OC Crucial Ballistix 2GB 
Hard DriveMonitorKeyboardPower
Western Digital Raptor Samsung 940BX nord lead 2X Seasonic S12 650W 
Case
Lian Li PC-65B 
  hide details  
Reply
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