Will my motherboard fit a Radeon 6870?

I have a Dell XPS 630i, and the motherboard is a PP150.

… And an image of my current setup (two 4850s, aren't they PCI express x16??!)

I've been wanting to upgrade my Radeon 4850 to a 6870 ( ) and I have the money and am about to order it, but then I realized I better make sure my motherboard will support it… So will it? I don't know much about PCI or PCI-e or x16, x1, etc, etc… so I would really like some help!

My current 4850s are one slot. The 6870s are much thicker and appear to need two slots… ?

I'm just really confused and would like some help before I go buy a new video card. Will it fit in this motherboard? I will take both 4850s out and every PCI slot will be available. Thanks!

P.S. Normally very tech-savvy, but motherboards are something I've never really cared too much about… :/

EDIT: Just found a video of someone putting in a video card much like the 6870 into an XPS 630:
Maybe I'm worrying for nothing… ;p
10 answers Last reply Best Answer
More about will motherboard radeon 6870
  1. Dual slot means that the graphics card fits into 1 PCI express slot but has twice the width of a normal card. You CAN crossfire 6870 but that's be bad because the graphics cards would be right next to each other and cause heat issues. Therefore yes, a 6870 will work on your mobo.
  2. It will fit but as said above Xfire might be a problem but a sure way to find out is to get the dimensions and do some measuring :p
  3. Based upon the information, fit sure but - PSU?? - CPU/Chipset bottleneck??

    For example, the Intel Q6600 LGA 775 will bottleneck the GPUs, the $100 question is by 'How Much?' See, example of a Core 2 Duo -> Next PSU, I noted a 750W and ideally you need a 850W or more depending if there's an OC, assuming Dell allows the CPU OC but GPU OC'ing is certainly a possibility. At typical load you'll be hitting ~500W+, but peak load will be higher. Also, 'electrolytic capacitor aging' over 1~2 years decreases the PSU peak watt output by 15%~20%+, depending on use, or 750W * 0.8 = ~600W due to aging. This might not be a problem but it's something I thought you should be aware of nonetheless.

    CF Bridging - Use (1) bridge in 2-WAY and use the (1) on the 'right most' according to your photo {closest to the PCIe/GPU screw to the case.}

    Generic sizes:
    HD 6870 10.3" long
    HD 4850 9.6" long
  4. Thanks for all that info, jaquith!

    My CPU is a C2Q Q9550 2.8GHz and my PSU is 850W, not sure about the exact model. I've tried OCing my CPU and apparently this motherboard won't allow it. I've OC'd my current 4850 though, to a bit more than stock speeds and it runs alright.
    I think everything will be okay for now, though. Planning on building a brand new computer next year, once new chips and motherboards have come out. I hear it's a bad time to build one atm. ;p

    As for bottlenecking, I have never looked into that either! Thanks for the tip again. I looked around Google and found this:

    As well as a few other links/forum threads, and I think my C2Q will be fine with the 6870.

    Mainly just wanted to upgrade to a DX11 card with 1GB of RAM so I could play things like Battlefield 3, Crysis, etc… not on max, but high. (At 1280x800 res) Glad it'll fit, too. Thanks, everyone. ;)
  5. Best answer
    I do agree the Ivy Bridge would be a good upgrade path :)

    However, I do not agree with 'Yahoo' and it's easy to tell folks what they want to hear -- I'm long past that point. Most benchmarks are geared towards HD 1920x1080 so with 1280x800 -- I don't even want to guess?? As long as your Frame Rates are above 40~45 FPS with High Details and at least 4xAA or better then keep what you've got. ;)

    PSU??!! It says 'Maximum Output 750W' ->

    Typical Resolutions:
    Example -
    Single GPU 4% min to 21% bottleneck

    Example -
    "q9550 @4ghz to a 2600k @5ghz with gtx 570
    my 3d mark score went from 34k to 54k
    heaven from 104fps - 116fps
    metro2033 from 47fps - 82fps"

    It depends upon: 1. Game, 2. Detail and AA, 3. Resolution, 4. GPU(s) to know the answer. IF you simply said a 'single HD 6870' then I would ignored 'bottleneck', but in CF HD 6870 I thought you should be thinking about -- bottlenecking. The problems aren't until 'a games' frame rates drop below 40~45FPS and you get choppy rendering. Crysis maybe 10%~15% FPS reduction and my best guess is similar for BF3.
  6. Who ever said anything about Crossfire? I may have implied that I was switching both 4850s to two 6870s. But I only want one 6870.
    And sorry about the PSU, heh.

    So you're saying I shouldn't worry about bottlenecking with a single card?

    Also, from that link you sent me, I compared a Q9550 2.8GHz to the 2500k and the differences weren't that great/bad. As I said before, I do plan on building a completely new computer around this time next year, but I just wanted a single 6870 to carry me through until then.
  7. My misunderstanding regarding CF - it'll be bottlenecked but hardly worth worrying about. Since you're only adding (1) GPU then your 750W PSU is good.

    OC the GPU(s), use MSI Afterburner ->
  8. Yep, I already have MSI Afterburner. It's supposed to be the best for overclocking.

    Thanks for all your help. It helped.

    Oh, and the Ivy Bridge, yeah. Can't wait to see what that is all about once it is released to the public. ;)
  9. BTW - I have a 980X/X58 and compared to the SB on some tests I'm bottlenecked 1%~2%. Whatever CPU is the king of the hill for its segment there's going to be performance differences.
  10. Best answer selected by CaptainIcy.
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