Radeon HD 5770 Performance

I only have a 400 W power supply, so I'm not sure if my computer could handle the hd 5770..if it can't, how about the 5750? I want to upgrade my graphic card in order to play final fantasy XIV, is this there a card under $150 that would better fit my needs than this?
Also, if anyone notices any other reason this card wouldn't work in my system, let me know please

Thanks for any info

My computer: http://www.geeks.com/details.asp?invtid=LX6810-01-R&cat=SYS
Graphic cards: 5770 http://www.microcenter.com/single_product_results.phtml?product_id=0327190#rebate
5750 http://www.frys.com/product/6141779?site=sr:SEARCH:MAIN_RSLT_PG
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  1. please state the full specs of your system including make and model of your motherboard, brand and model of your power supply and CPU then we can help you out.
  2. well that's why i linked to a specs sheet of my computer, but here it is:

    # Gateway LX Series LX6810-01 Core 2 Quad Q8200 2.33 GHz Tower PC

    # General Features:
    # Glossy black exterior
    # Premium tower desktop with media control interface
    # Microsoft Windows Vista Home Premium 64-bit w/SP1
    # Intel Core 2 Quad Q8200 2.33 GHz 45nm quad-core processor
    # 1333 MHz FSB speed, 4 MB L2 cache
    # NVIDIA nForce 720i chipset (MCP7A-D)
    # 8 GB (8192 MB) DDR2 PC2-6400 800 MHz RAM Dual-channel memory
    # 640 GB 7200 RPM SATA II hard drive w/16 MB cache
    # No floppy drive
    # 18x DVD±RW DL with Labelflash technology
    # 15-in-1 memory card reader
    # NVIDIA GeForce GT120 PCI-Express video card with up to 1 GB shared memory
    # Analog/Digital TV Tuner with 3-D comb filter
    # 8-channel (7.1) High Definition audio with Dolby Home Theater sound
    # Integrated 10/100/1000 Gigabit Ethernet LAN
    # 56K ITU V.92 ready Fax/Modem
    # Vista Media Center remote control included
    # 400W power supply (100-127V/220-240Vac 9.5A, 50/60 Hz)
    # Multimedia keyboard included
    # USB mouse included
    # Amplified USB-powered stereo speakers

    # Motherboard Features:
    # One (1) PCI Express x16 slot (occupied)
    # One (1) PCI Express x1 slot (occupied)
    # Two (2) PCI slots
    # Six (6) SATA ports
    # Four (4) 240-pin DIMM slots (occupied)

    # Front I/O Ports:
    # Memory card slots
    # Two (2) USB ports
    # Headphone jack
    # Microphone jack
    # One (1) IEEE 1394a port
    # Composite A/V

    # Rear I/O Ports:
    # Two (2) PS/2 ports
    # One (1) HDMI out
    # One (1) dual link DVI-I port
    # One (1) VGA out
    # Four (4) USB 2.0 ports
    # One (1) IEEE 1394a port
    # One (1) RJ-45 Ethernet jack
    # One (1) RJ-11 fax/modem jack
    # Line in, line out, microphone jacks
    # Side, rear, c/sub audio jacks
    # Composite Audio L/R
    # S-Video out
    # ATSC antenna
    # TV antenna
    # IR Blaster 1
    # IR Blaster 2
    # IR Receiver

    # Case Features:
    # Two (2) 5.25-inch external drive bays (one occupied)
    # Two (2) 3.5-inch internal drive bays (one occupied)
    # Two (2) 3.5-inch removable trays for SATA hard drives
    # Illuminated Media Center touch controls
    # Pop-out A/V panels

    # Case Dimensions:
    # 17.7 x 7.5 x 19.6.-inches (H x W x D)
    # Weight (system only): 31 lbs.
  3. How many amps can your psu's 12V rail provide (to find this, look on the sticker on the side of the psu and look for where it lists all the different volages and amps)?
  4. Just checked and it says 28.5 A
  5. The 5750 looks like its within reach, but I think the 5770 would be pushing it with that unit.
  6. What would happen if i ended up buying the 5770 with my current psu? the system might randomly shut off or something? because i may try to get by with my current psu and upgrade later
  7. Depending on the quality of your psu, it could overload resulting in every piece of hardware connected to it becoming unusable. IMHO, its not worth the risk.
  8. ok well thanks for the help, I'm going to upgrade my psu and the graphic card
  9. Good luck, and if you need any recommendations on the psu, just ask.
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