1. #1

    Help with powersupply+crossfire

    Hello
    I recently bought a new computer, and I'm planning to run ATI Crossfire with 2x Sapphire Radeon HD 5850 "Toxic" edition.

    However, I'm wondering if my Chieftec Super Series 750W PSU ATX 12V V2.3, 80 Plus, Modular, 2x 6pin+2x 6+2pin PCIe, 8x SATA, 140mm will be able to supply enough power.
    this is what I got atm:

    Motherboard: Gigabyte GA-890GPA-UD3H, Socket-AM3 ATX, AMD890GX+SB850, DDR3, 2xPCIe(2.0)x16, SATA 6Gb/s, USB 3.0, VGA, DVI, HDMI
    Processor: AMD Phenom II X6 1090T Black Edition Six Core, 3,2Ghz/3,6GHz Turbo, AM3, 9MB, 125W, Boxed
    Watercooling: Corsair H50 Hydro Series CPU Cooler
    Ram: Kingston ValueR. DDR3 1333MHz 4GB, CL9 Kit w/two matched ValueRAM 2GB DDR3
    Graphic card: Sapphire Radeon HD "toxic" edition 5850 1GB
    cd/dvd reader: Sony Optiarc DVD±RW burner AD-5260S
    hard drive: Western Digital Caviar® GreenPower™ 1TB Sata 3 Gb/s, 64MB Cache
    SSD hard drive: Corsair SSD Force Series 2,5" 60GB SATA2, 285MB/275MB/s read/write, incl 2,5" to 3,5" bracket

    so yeah, basically wondering if I can run crossfire with 750W power supply

  2. #2
    you will be fine with the Chieftec 750watt PSU. Chieftec is a realy good PSU brand and 750watt will be more then enough for your system in CF
    Intel i5 2500K: Asus Masimux IV Extreme: Palit GTX 680 Jetstream: Chieftec Nitro Series 1200W:Corsair H-100 Hydro:
    8Gb Corsair Vengeance 1600 Mhz CL8: Crucial M4 128Gb+256Gb: Creative Sound Blaster Z: Corsair Obsidian 800D: Plextor PX-880SA

  3. #3
    From the cards I have looked at the 5850 only needs 75watts a card (that is like 8 amps) so a 750 is fine for dual cards.

    Unless you already have one 5850 I would go with 6870s.

    Video is a Palit GTS450. Main display is a 24" full HD TV. Secondary display is an ACER 19" lcd at 1440x900.

  4. #4
    Moderator Cilraaz's Avatar
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    Quote Originally Posted by Moobious View Post
    From the cards I have looked at the 5850 only needs 75watts a card (that is like 8 amps) so a 750 is fine for dual cards.

    Unless you already have one 5850 I would go with 6870s.
    That's a gross underestimate.

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