Whats the difference between PCIe 2.0 and PCIe 1.0

whats the difference between PCIe 2.0 and PCIe 1.0 and can i run a 2.0 card in a 1.0 slot and what would be the best graphics card for my system

System specs:
AMD Athlon 64 x2 dualcore processor 4200+ 2.2GHZ
4.00GB RAM
NVIDIA 8400 GS is the current card
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  1. PCIe 1.0 has half the bandwidth of a PCIe 2.0 slot of the same width

    PCIe 1.0 and PCIe 2.0 are backwards and forwards compatible so you can put a 2.0 card in a 1.0 slot, but it will run at 1.0 speeds
  2. So is it even worth buying a 2.0 card
  3. spliff5522 said:
    whats the difference between PCIe 2.0 and PCIe 1.0 and can i run a 2.0 card in a 1.0 slot and what would be the best graphics card for my system

    System specs:
    AMD Athlon 64 x2 dualcore processor 4200+ 2.2GHZ
    4.00GB RAM
    NVIDIA 8400 GS is the current card


    Other than bandwidth, there no difference between pci-e 1.0 and 2.0.

    As for can you run a 2.0 card on a 1.0 slot? Yes. PCI-e slots & cards of both versions can run in any of the configurations.

    http://en.wikipedia.org/wiki/PCI_Express

    As for what gpu to get. Kind hard to say. You are going to lose a little bit of performance by not running a pci-e 2.0 card on a 2.0 slot, but the cpu is going to be more of the bottle neck. :/

    Also what games are you playing?
  4. spliff5522 said:
    So is it even worth buying a 2.0 card


    Yeah it'll worth it.

    PCI-e 1.0 x16 bandwidth = PCI-e 2.0 x8 speed

    And we see even with the lastest gpu's that it takes a high end setup to see a difference between pci-e 2.0 x8 and x16.
  5. i want to play starcraft 2
    i forgot to mention my PSU is 450watt
    my budgets around $400
  6. yes it is worth it, you'll only see about a 4% drop in performance from x16 to x8

    i'd recommend an ati hd5770
  7. cool so with the ati hd5770 there should no isuues even with a 2.2ghz cpu or should i try and upgrade that as well

    sorry i'm still kinda new to the hardware stuff
  8. What cpu? how many cores?
  9. spliff5522 said:
    cool so with the ati hd5770 there should no isuues even with a 2.2ghz cpu or should i try and upgrade that as well

    sorry i'm still kinda new to the hardware stuff


    you might run into a slight bottleneck
  10. AMD Athlon 64 x2 dualcore processor 4200+ 2.2GHZ 2 cores
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