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Thread: Which PSU?

  1. #1
    Senior Member AD-15's Avatar
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    • AD-15's system
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      • PSU:
      • 850W Corsair HX Series Modular
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      • Corsair 700D
      • Operating System:
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      • 22" Dell E228WFP

    Which PSU?

    hello,

    For my new system I've been thinking of using 2x Asus 8800 GTS in SLI. Will this PSU do?

    http://www.scan.co.uk/Products/Produ...oductID=446787

    Or should I find a more powerful PSU?

    Also, are there any disadvantages in using a MODULAR PSU? Would there be any degradation in the electrical supply to a component when the power cable is only connected to the PSU, rather than soldered into it?

    Thanks!!

  2. #2
    Flat cap, Whippets, Cave. Clunk's Avatar
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    Great PSU, but I cant help wondering why you want 2xgts cards and not 1x GTX. Less heat, less power, less to go wrong.

  3. #3
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    I don't think it has official certification for SLI in the case of the 8800 series but over at HardOCP there is a Corsair representative that claims to be successfully running two 8800GTX's.

    Here's the thread if you want to read through it: http://www.hardforum.com/showthread.php?t=1120431

    Regarding modular power supplies. It's always made me wonder too but recently I came across this:

    http://www.pcpower.com/technology/myths/

    "3. DON'T LOSE POWER WITH MODULAR PLUGS
    Due to their look, convenience, and cost savings for manufacturers, modular plugs have become a popular power supply feature. Unfortunately, there has been little or no discussion of the impact of this feature on overall performance and reliability. The fact is, modular plugs limit power by adding to electrical resistance. The voltage drop can be as much as would occur in 2 feet of standard wire. Worse yet, modular plugs utilize delicate pins that can easily loosen, corrode, and burn, creating the potential for a major system failure. That's why professional system builders specify uninterrupted wire!"

    By the way, PC Power & Cooling are a very good PSU manufacturer if you haven't heard of them but I don't know how much truth is in the above.

  4. #4
    radix lecti dave87's Avatar
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    Good PSU, but as Clunk said, go for a single GTX instead.

    If you are then considering GTX SLi, then you'd want something like the Seasonic M12 700w

  5. #5
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    • DratUK's system
      • Motherboard:
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    Another one for Single GTX.
    And yes a good PSU.

  6. #6
    Senior Member AD-15's Avatar
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    • AD-15's system
      • Motherboard:
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      • CPU:
      • i7 920 @4.45GHz!!!! (No HT)
      • Memory:
      • 3x2GB G.Skill Trident
      • Storage:
      • 1x 160, 1x 250 (Both 16MB cache SATA2 WD)
      • Graphics card(s):
      • EVGA 460 1GB @ 815, 1013MHz
      • PSU:
      • 850W Corsair HX Series Modular
      • Case:
      • Corsair 700D
      • Operating System:
      • Windows 7 64
      • Monitor(s):
      • 22" Dell E228WFP
    OK, thanks guys

    I have now decided, after silentvoice's post, against buying a modular PSU. I always felt uneasy about buying a component where you would have to connect up cables which would be carrying very strong electrical power.

    I have also decided on a single 8800 GTX, so, would this PSU be suitable:

    http://www.scan.co.uk/Products/Produ...oductID=256340

    Thanks again!

  7. #7
    Flat cap, Whippets, Cave. Clunk's Avatar
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    Yes, another great PSU that

  8. #8
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    • DratUK's system
      • Motherboard:
      • ASUS P877-V Pro
      • CPU:
      • I5 3570K with Antec Kuhler 920
      • Memory:
      • 8Gb Corsair Vengance
      • Storage:
      • 120Gb OCZ Vertex 2 Sandforce, 1TB WD
      • Graphics card(s):
      • Palit Jetstream 670
      • PSU:
      • Enermax 720
      • Case:
      • Lian Li A10B
      • Operating System:
      • Win 7 64
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    Yep dont think you'll have any problems there.

  9. #9
    finding nemo staffsMike's Avatar
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      • PSU:
      • ocz gameXstream 700w
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    Doesnt't really leave a lot of room to breathe (or overclock) Id consider getting a 700w...mine (My System) is £100 on overclockers and is great..they only take the power they need remember so you don't need to worry about power bills etc..

  10. #10
    Flat cap, Whippets, Cave. Clunk's Avatar
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    Quote Originally Posted by AD-15 View Post
    OK, thanks guys

    I have now decided, after silentvoice's post, against buying a modular PSU. I always felt uneasy about buying a component where you would have to connect up cables which would be carrying very strong electrical power.
    Dont forget that the link that silentvoice posted was about pc myths.

    Modular is fine.

    If you buy from a reputable dealer with proper support, you will be fine.

  11. #11
    JagerBomber Mossy's Avatar
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    Quote Originally Posted by Clunk View Post
    Dont forget that the link that silentvoice posted was about pc myths.

    Modular is fine.

    If you buy from a reputable dealer with proper support, you will be fine.
    correct the resistance is minimal and all tests/reviews are done with the modular cables that are supplied.

    Hope this helps you to make your decision on your whole computer
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  12. #12
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    • DratUK's system
      • Motherboard:
      • ASUS P877-V Pro
      • CPU:
      • I5 3570K with Antec Kuhler 920
      • Memory:
      • 8Gb Corsair Vengance
      • Storage:
      • 120Gb OCZ Vertex 2 Sandforce, 1TB WD
      • Graphics card(s):
      • Palit Jetstream 670
      • PSU:
      • Enermax 720
      • Case:
      • Lian Li A10B
      • Operating System:
      • Win 7 64
      • Monitor(s):
      • Dell 24" 1900x1200
      • Internet:
      • VM 100
    Quote Originally Posted by staffsMike View Post
    Doesnt't really leave a lot of room to breathe (or overclock) Id consider getting a 700w...mine (My System) is £100 on overclockers and is great..they only take the power they need remember so you don't need to worry about power bills etc..
    Same unit as mine, the unit is made for OCZ by FSP, so its an Epsilon in disguise

  13. #13
    Senior Member AD-15's Avatar
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    • AD-15's system
      • Motherboard:
      • Asus Rampage II Extreme
      • CPU:
      • i7 920 @4.45GHz!!!! (No HT)
      • Memory:
      • 3x2GB G.Skill Trident
      • Storage:
      • 1x 160, 1x 250 (Both 16MB cache SATA2 WD)
      • Graphics card(s):
      • EVGA 460 1GB @ 815, 1013MHz
      • PSU:
      • 850W Corsair HX Series Modular
      • Case:
      • Corsair 700D
      • Operating System:
      • Windows 7 64
      • Monitor(s):
      • 22" Dell E228WFP
    Argh

    I'll do my research over the weekend, I'll see if I can dig any extra stuff up.

    I don't ever plan to overclock, it really isn't worth it with such expensive equipment, I wouldn't want anything to go wrong. With this in mind, would the two PSU's I suggested (600W and 620W) do?

  14. #14
    Lover & Fighter Blitzen's Avatar
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    Just go for the 620W Corsair.

    Imho its the best PSU for under £100 that money can buy

  15. #15
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    • DratUK's system
      • Motherboard:
      • ASUS P877-V Pro
      • CPU:
      • I5 3570K with Antec Kuhler 920
      • Memory:
      • 8Gb Corsair Vengance
      • Storage:
      • 120Gb OCZ Vertex 2 Sandforce, 1TB WD
      • Graphics card(s):
      • Palit Jetstream 670
      • PSU:
      • Enermax 720
      • Case:
      • Lian Li A10B
      • Operating System:
      • Win 7 64
      • Monitor(s):
      • Dell 24" 1900x1200
      • Internet:
      • VM 100
    Yes the 2 PSU's are enough to power the system.

  16. #16
    finding nemo staffsMike's Avatar
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    • staffsMike's system
      • Motherboard:
      • evga 680i
      • CPU:
      • e6600
      • Memory:
      • geil ultra pc6400
      • Storage:
      • WD 320gb
      • Graphics card(s):
      • leadtek 8800 GTS 640mb
      • PSU:
      • ocz gameXstream 700w
      • Case:
      • akasa eclipse
      • Monitor(s):
      • dell 2007wfp and Lg L194WT
      • Internet:
      • pipex homecall
    Some may argue why buy such equipment if you dont intend to overclock

    fair play though...the 620 is fine.

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