Question regarding Dell Dimension 8400 and a Sapphire Radeon HD 4870.

Hi guys. (I'm not the best with computers so bear with me). I was just wondering whether or not I could install a Sapphire Radeon HD 4870 512mb (GDDR5) graphics card into my dell dimension 8400. This link may be helpful, it's the online support document for the dimension 8400.

If it is possible to install the card, I do imagine that I will also have to upgrade my PSU-but to what?

Thanks for reading and I appreciate your help.
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More about question dell dimension 8400 sapphire radeon 4870
  1. If it's the Dell 8400 with a Pentium 4, then definitely not. That system has DDR1 RAM, a weak power supply, and no PCIe slots.

    What are your complete system specs?

    CPU, motherboard, PSU, and PCIe slot?
  2. It supports PCIe, one x16 and one x1 card. It also has DDR 2 ram.
    -Intel Pentium 4 3.2ghz
    -350W power supply (not sure about rails)
    -Intel 925ex motherboard.
  3. 4870 is a bit old. you should consider 5770.
    according to ATI u need 500w PSU for 4870

    and better be true power or at least get cooler master ones.
  4. K, I'll look into the 5770. But just to be clear, the 8400 will be able to support the 4870 right?

  5. should be able to, unless your PSU crappy or using AGP slot.
    i got a ASUS M2N-E (NOT PCI-E 2.0) running 8800GT (PCI-E 2.0 card). But performance lowered a bit.
  6. Don't pair a Pentium 4 with a 5770 or 4870. You will have a huge bottleneck.

    And P4 systems probably won't have the PSU to run them either (certainly no 6 pin connectors).

    If you don't do anything other than light gaming, a 4670 DDR3 for $60 will suffice.
  7. The card HD4870 or HD5770 is going to be bottlenecked by the pentium 4 CPU. From what GPU are we upgrading from and what resolution is the monitor?
  8. if putting bottleneck into account. i think 5670 or 5570 is the better choice, lower power consumption and better tech. he had already got a very weak PSU. I strongly suggest changing the PSU too. I assuming that subline want as many power as he can get from his old pc.

    bluescreen is right, assuming using single core P4 with HT. you won't go very far in extreme gaming.

    one problem, if you are using onboard all along and machine that old. i wonder how long the mother board (in specific, the capacitor on the mobo.) will survive if the power load skyrocket with the new GPU.
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