Power Supply for New i7 system

I am trying to put together a system from parts I have been able to gather at good prices but am stuck on selecting a power supply. The components I currently have are:

Asus P6T Deluxe v2

Intel i7-920 2.66ghz

12GB DDR3 1600

2 - SAPPHIRE Vapor-X Radeon HD 4870 2GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card

I have a rather large case so longer cords are a must. At present I only have two optical devices, but am looking to add a blu-ray or two in the future and if possible I would like to keep one of these drives.

I was looking at these two:

PC Power & Cooling Silencer PPCS910 910W ATX12V 2.2 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS SILVER

CORSAIR CMPSU-1000HX 1000W ATX12V 2.2 / EPS12V 2.91 SLI Ready CrossFire Ready

but with all the options I am getting a little confused. Any help would be greatly appreciated.
15 answers Last reply
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  1. Check out JonnyGuru and you will find that both are good choices.
  2. Thank you for the link. I think I will go with the corsair due to the component factor and not needing all of the available cables at the moment.
  3. sweetsx, for your rig, the Corsair 850TX should be more than enough, and it's only $103 at Amazon right now with MIR. All the extra money for the 1000TX may be overkill... almost twice the price for a 150w gain you probably won't use. Have a look!
  4. But just to be sure, check out this PSU calculator:

    http://support.asus.com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us

    I find it a bit over (meaning it may state you need more power than necessary) but it's a good starting point, to be sure. They said I needed 900 watts. I don't need that much.

    Actually, I just tried Thermaltake's calculator, and it gave me a much lower wattage, and asked more specific system questions:

    http://www.thermaltake.outervision.com/

    I have/will have an Antec 1200 case with a bazillion LED fans, OC'd i7 920 at 3.8 gHz, 12GB ram, one WD Raptor, two 7200rpm drives in RAID, DVD drive, blu-ray drive, two GTX260s in SLI, external eSata drive, Soundblaster card, lettuce, pickles, and tartar sauce and Thermaltake says I need 603 watts, and that takes into account a 20% aging rate of the PSU's capacitors. Much more accurate than the first site that said I needed 900watts, yet didn't change when I added and took away hard drives.

    Anyway, have fun with the build!
  5. Fantastic link! I think that may be a better option as well, and definitely easier on the pocketbook.
  6. I forgot to mention that I have the 850TX... I think it's quite the deal!
  7. Using those calculators, with overclocking, I will need at least 900w. I guess I will be shelling out the extra $100 after all :P. Thanks again for all your help
  8. sweetsx said:
    Using those calculators, with overclocking, I will need at least 900w. I guess I will be shelling out the extra $100 after all :P. Thanks again for all your help


    Really, even on the Thermaltake site? Rats...
  9. I would go with the PC Power & Cooling Silencer PPCS910 910W power supply. I have a system similar to yours and I actually had the same two power supplies in mind. This power supply works great, and yes it is actually very silent. The company is know for making quality power supplies as it is there main product. I chose this company for their reputation of satisfying their customers.

    Do yourself a favour and buy that power supply.
  10. +1 to read reviews about the PSU you want.

    The corsair 850 are ROCK SOLID and very efficient. The PC P&C is really nice to. i got a 750 silencer and i like it.
  11. Jonnyguru's review said the Silencer 910 was extremely loud.
    I went to http://www.extreme.outervision.com/PSUEngine. I overclocked an i7/920 to 3.8 on 1.4v, put in the Crossfired GPUs, included a bunch of drives, fans, etc. and came up with 594W. Allowing for headroom, get this 750W Antec: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371025.
    It is semi-modular, has plenty of juice, and all the connectors you need.
  12. the Silencer gets lood under load, i dont think hes gona pump 800-900 watts to make it lood ... i NEVER eared my silencer since under FULL load ( CPU+GPU ) i get 450w ...... and while gaming im in the 300-400, depand on the game.
  13. Hi there,

    I am not sure if this is a place to post my questions.

    I just built a computer very similar to Sweetsx for gaming purpose. I'd built computers myself many times. However, this new computer is the only one giving me so much trouble. .

    If I just watched movies, web surfing, my computer would work fine. However, it would keep reboot itself like every 5 or 10 min when I played the game, Everyquest2. I did a bit research on this issue. Some people said it might relate to PSU. So that I purchased
    IN WIN COMMANDER IRP-COM1200 1200W ATX 12V 2.3 / EPS 12V 2.91 SLI Ready CrossFire Ready 80 PLUS Certified Modular Active
    When I installed it, it couldn't even boot up my system. So I changed to my original PSU, it couldn't boot up the system also. I kept swap between these 2 PSUs to try to boot up my computer. The funny things was that even I unpluged DVDrw/all case fans/ no USBs/single monitor at all, I couldn't even boot up my computer.For some reasones, my original could finally boot up after 4 hours tries.

    I also usedd ASUS PC prob to check CPU's temp and fans speed.
    CPU temp, watching movies, surfing internet / gaming : 45 : 56 centigrade degree ( is 56 too high?)
    CPU fan speed : ~2.3 K rpm
    Case fans speed : ~1.2 K rpm
    Vcore : 1.2
    12V : 12.08
    Video card temp : watching movies, surfing internet / gaming : 42 : 57 centigrade degree ( is 57 too high?)

    So my questions are
    1. Why would my new computer keep reboot itself when I played the game, not enough power (I don't do any overclocking on any thing)? Anyway to fix it?
    2. Why wouldn't my original PSU boot up the computer when I installed it properly?
    3. Is there a log file to check what process it did last and crush.

    Any advice will be appreciated.

    Thank you for you time.

    My computer is
    AUS P6T V2
    i7 920 2.66 (no overclocking)
    OCZ Platinum 12GB 1600 MHz(6x2048)
    ASUS DVD +/- RW 20x
    Seagate 1TB Serial ATA HD 7200/32MB/SATA-3G
    ULTRA X3 850W PSU
    3 * 14mm case fans
    1 webcam
    dual monitor setup (1st: 1920:1080 ; 2nd: 1600:1080)
    Windows Vista Home Prem 64-bit DSP OEM DVD (automatic restart is unchecked)
    Avast! 4.8 Home edition (have latest virus def. and no virus found)
    (not many softwares installed)
  14. If you post your question in a new thread, instead of hijacking this one, I'm sure you'll get some useful suggestions.
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