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Thread: Which wattage PSU do I need?

  1. #1
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    Question Which wattage PSU do I need?

    Hi.

    Which wattage PSU do I need to power:

    Lian Li PC-80B case
    AMD Phenom II X4 955BE (OC to 3.6GHz)
    ATi Radeon HD4670
    Blu-Ray writer
    17 x HDD's (most within three times IcyDocks 3 bay x 5 drives)

    Was planning on purchasing a 650w Be Quiet! Dark Power Pro but read in a review that if running a quad-core and more than four HDD's, they recommended something with a higher wattage!

    Thanks.

    Cheekster.

    Dell Studio 15: Windows Vista Premium/4GB RAM/320GB HDD/Blu-Ray
    Samsung UE46F8000 & Dell 2407FPW

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    Re: Which wattage PSU do I need?

    I cant imagine you'd need more than 650w. I ran my Q6600 and QX6700 on a 535w Enermax with top of the range vga cards.

    HDDs dont really use up that much wattage - are you sure 17 is correct and not a typo? You might want to think about consolidating your drives...

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    • cheekster's system
      • Motherboard:
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      • CPU:
      • Intel Xeon E3 1230 v2 Quad Core 3.3GHz
      • Memory:
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      • Storage:
      • 256GB Samsung 830 (Boot), 3TB Seagate Barracuda ST3000DM001 x 2 + 3TB WD Cavier Green x2
      • Graphics card(s):
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      • PSU:
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    Smile Re: Which wattage PSU do I need?

    No typo, 16 x 1.5TB HDD's and a 500GB boot drive. Difficult to consolidate when the only larger ones currently available are 2TB and they cost more than double what 1.5TB drives cost!

    Cheekster.

  4. #4
    Banhammer in peace PeterB kalniel's Avatar
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    Re: Which wattage PSU do I need?

    About 450W? Depends if you're starting them all up at once or can stagger them.

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    • cheekster's system
      • Motherboard:
      • Gigabyte GA-Z77X-D3H
      • CPU:
      • Intel Xeon E3 1230 v2 Quad Core 3.3GHz
      • Memory:
      • 32GB Corsair Vengeance PC3-12800
      • Storage:
      • 256GB Samsung 830 (Boot), 3TB Seagate Barracuda ST3000DM001 x 2 + 3TB WD Cavier Green x2
      • Graphics card(s):
      • 1GB ScanFX radeon HD7750 GDDR5 800MHz
      • PSU:
      • BeQuiet Dark Power Pro Modular 650w
      • Case:
      • Fractal Design Define R4
      • Operating System:
      • Windows 7 64-Bit Home Premium
      • Monitor(s):
      • Dell 2407FPW
      • Internet:
      • BT Infinity

    Smile Re: Which wattage PSU do I need?

    Thanks for the replies guys.

    Just ordered a Be Quiet! 650w Dark Power Pro from Scan, just to be on the safe side and gives me options if I wish to change any of the components including the gfx card in the future. Was £15 more than the next model down (550w).

    Cheekster.

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    Senior Member Pob255's Avatar
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    Re: Which wattage PSU do I need?

    Hard drives don't use a varst amount of power, however 17 of them will stack up

    650w should cover you, I'd look for a single 12v rail psu for choise, simply because most multi-rail psu's tend to focus on pci-e and eps (as normally these are the two biggest power draws) and will often stick all the Sata&molex on one single rail.
    Normally that's not an issue but with that many hdd's on a single limited rail you may hit issues.

    As this is a less than common situation, you may want to consider asking on the Corsair section of this forum and asking their advice. (if you don't object to Corsair PSU's)

    EDIT: Depends on HDD but 6 disks per 100w is a good safe estimate, not including other components.

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