Dell T7400 PCI-E

I searched the forum, and didn't see anything specifically relating to the situation, but I may have missed something. So I appologize if this has been posted before.

I have a Dell Precision T7400 that I got a Gigabyte GTX 570 SOC edition for. The card has a 6 pin and an 8 pin power adapter, but the PSU only has 6 pin adapters. I have a 2x 4pin molex to 8pin adapter, but the T7400 only has one molex. Should I get a 2x 6pin to 8pin adapter for it?
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  1. It highly likely that the dell supplied PSU has enough capacity to run the card anyways; so you'll need to change it out. ( Is it even a 300w PSU?)

    Gigabyte recommends a 650W Power Supply. Here is a list of corsairs on Newegg.
    http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&IsNodeId=1&Description=corsair%20650&bop=And&Order=PRICE&PageSize=20
  2. popatim said:
    It highly likely that the dell supplied PSU has enough capacity to run the card anyways; so you'll need to change it out. ( Is it even a 300w PSU?)

    Gigabyte recommends a 650W Power Supply. Here is a list of corsairs on Newegg.
    http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&IsNodeId=1&Description=corsair%20650&bop=And&Order=PRICE&PageSize=20


    The psu is a 1000w and can't be replaced with a non Dell iirc.
  3. cmgunn said:
    I have a Dell Precision T7400 that I got a Gigabyte GTX 570 SOC edition for. The card has a 6 pin and an 8 pin power adapter, but the PSU only has 6 pin adapters. I have a 2x 4pin molex to 8pin adapter, but the T7400 only has one molex. Should I get a 2x 6pin to 8pin adapter for it?

    Hi there,

    I'm in the same situation, wanting to run GFX295 with a 6-pin and an 8-pin PCIe power connector on my Dell T7400. The power supply is 1000W with 5 x 12V rails @ 18A each so it should be enough to power 2 of these. I'm just very puzzled by the connectors Dell provides. Mine has a 8-pin P19 which according to the manual and the coloring isn't wired with the needed 3x12V on pins 1-3. It also has a 10-pin(!) P24 which seems to have 3 x 12V on pins 1-3 and compatible keying but is too short to reach any graphics card!!!

    How did you (or anyone else) solve this? Thanks.
  4. I just found a wonderful tutorial that has shown me how to rewire my Dell PSU using 2 staples: http://www.overclock.net/t/1006680/how-to-remove-the-pins-from-an-atx-power-supply-with-staples

    This saved me having to buy a toolkit for this such as: http://www.sunbeamtech.com/PRODUCTS/PSU%20MODDING%20TOOL%20KIT/PSU%20MODDING%20TOOL%20KIT.html

    Make sure you disconnect AND discharge your PSU before attempting any such mod!!!

    Here's a link to a well-informed discussion about the wiring of 6-pin and 8-pin PCIe connectors with a link to pin diagrams: http://www.tomshardware.co.uk/forum/274631-10-power-spec-power-plug
  5. phusg said:
    I just found a wonderful tutorial that has shown me how to rewire my Dell PSU using 2 staples: http://www.overclock.net/t/1006680/how-to-remove-the-pins-from-an-atx-power-supply-with-staples
    The photos make that look much easier than it actually is.
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