April 14, 201214 yr Author No, the slot has nothing to do with DDR2 or DDR3. The slot is PCIe, which is a completely different standard. Can you post your current card? (I mean the exact card, not another one in the same family) I meant that my motherboard can't handle a DDR3 graphics card there to powerful for the outdated PCIe Slots It's kinda like RAM sometimes you can only have 1gb per slot but others you could have 4gb per slot