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PSU

By Kebtiz
Sep 13, 2008
  1. The PSU W requirements would be based on peak requirements of each components added together wouldn't it? I am building a SLI desktop and the current power supply I am considering is only 630W.

    Current Components I am planning on using:

    XION XON-630P12N 630W ATX12V SLI Ready

    2x Seagate Barracuda 7200.11 500GB 7200 RPM 32MB
    2x BFG GeForce 9500 GT 1GB 128-bit PCI Express 2.0 - 350W PCI Express-compliant system power supply with a combined 12V current rating of 18A or more
    AMD Phenom 9850 BLACK EDITION 2.5GHz - 1.20/1.25/1.30V 125W Thermal Power
    MSI AM2+/AM2 NVIDIA nForce 750a SLI ATX AMD
    OCZ Reaper HPC (2 x 2GB) SDRAM DDR2 1066 - 2.1v
    COOLER MASTER 92mm Hyper TX2 CPU Cooler
     
  2. captaincranky

    captaincranky TechSpot Addict Posts: 11,702   +1,886

    I'm curious to find out how many think a single 8800GT would outperform a pair of 9500GT (s) in SLI. I don't know if you've already purchased these cards, if you haven't, it's something to think about.

    In direct answer to your question, I think a high quality 500 Watt PSU would drive the system just fine. But you might want a few more watts in the tank, should you decide to upgrade further.

    I'm not familiar with "Xion" PSUs, someone else might want to offer their conclusion on them.

    With the hardware you describe, using only one 9500GT, a good 350 to 400 Watt PSU would do the job. So, if the Xion is a decent unit, it would be fine also.

    The 84/8500 and 94/9500 series of cards aren't really high draw, but they're not really a gamer's best friend either. Their comfort zone is driving flat panel TVs in high-def, and they have HDCP to enable this.
     
  3. Kebtiz

    Kebtiz TS Rookie Topic Starter

    The 8800GT costs nearly double, but if the performance is there I'd say its a winner, thanks for adding that. But you don't think the 9500 is a good choice for a gaming video card?

    Some specs for convenience:

    $86.88
    Chipset Manufacturer NVIDIA
    GPU GeForce 8600 GT
    Core clock 540MHz
    Stream Processors 32
    Memory
    Memory Clock 800MHz
    Memory Size 1GB
    Memory Interface 128-bit
    Memory Type GDDR2

    $99.99
    Manufacturer NVIDIA
    GPU GeForce 9500 GT
    Core clock 550MHz
    Stream Processors 16
    Memory
    Memory Clock 1400MHz
    Memory Size 1GB
    Memory Interface 128-bit
    Memory Type GDDR2

    $194.99
    Chipset Manufacturer NVIDIA
    GPU GeForce 8800 GT
    Core clock 600MHz
    Stream Processors 112
    Memory
    Memory Clock 1800MHz
    Memory Size 1GB
    Memory Interface 256-bit
    Memory Type GDDR3

    If the speeds of 9500 SLI'd and 1 88gt are similar even if 8800gt is slightly slower i would go that route simply for upgradability. (yes i just made up a word)
     
  4. captaincranky

    captaincranky TechSpot Addict Posts: 11,702   +1,886

    The 9500GT is not an ideal choice for gaming. The good news is that the 8800GT that you list below is ridiculously overpriced in today's market. An 8800GT in today's market is worth about $120.00 to $150.00. 512 MBs of memory should be sufficient.
    You can always tell a made up word when using FF2.0 or above, since it will have the same redline under it that many of my "proprietary" words do.

    Here's an Nvidia comparison page that is dumbed down to the point where I understand it. It may help you to choose wisely, as the saying goes.

    http://www.nvidia.com/object/geforce_family.html
     
  5. Kebtiz

    Kebtiz TS Rookie Topic Starter

    Ha, I've been that that site so many times, but I never scrolled down to see a nifty little comparison chart, thanks much again Captain =)

    Actually, there isn't a big step up in price between 8800 and 9800 I think I am going to take the step.
     
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