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Express 2.0 vs pci express 3.0

express 2.0 vs pci express 3.0
wht the different between them
i got 2.0 motherboard and the graphic is 3.0...
any idea
11 answers Last reply Best Answer
More about express express
  1. The core of it is that PCI-E 3.0 offers more bandwidth than PCI-E 2.0. IIRC, PCI-E 3.0 @ 8X is the same as PCI-E 2.0 @ 16X, so assuming a purely linear scale, it'd be double the bandwidth. I'm sure there are a few other minor improvements as well, but bandwidth would be the big one most people are going to care about.
  2. bandwidth=?
  3. performance wise there is hardly any difference between pci 2.0 and 3.0 since pci 2.0 has yet to get saturated (cause a bottleneck)
    Ivy Bridge PCI-Express Scaling with HD 7970 and GTX 680
  4. is there different between colour too they way it look ..blue=express?
  5. my SAPPHIRERadeon HD 7850 OC 1 Gb
    the motherboard is motherboard DH61ZE..
    i got 4 gb normal ram
    and i3 2120 processor
    need a powersupply and a cooler..=??
    so tht mean my 3.0 graphic is not gud with 2.0 ?
  6. and wht is a crossfirebridge
  7. Best answer
    you're fine. a pci 3.0 card will work in a pci 2.0 slot.

    the chart i posted shows that there is such small difference it is highly unlikly it will affect you gaming at all. and a pci 3.0 card is backwards compatible with a pci 2.0 slot on the motherboard.

    since you have a H61 motherboard you do not need to worry about cooling the cpu because that will not overclock and the i3 do not overclock at all.

    a crossfire bridge is a ribbon cable used to connect two similar AMD graphics card for a multi card configuration. if you care to read a little more about it:
    AMD CrossFireX
    the card you are looking at comes with one, i doubt you will be needing it.

    as far as a PSU; the 7850 is insanely low in power consumption around ~100 watts. and your i3 2120 with your hard drive, RAM and chipset won't go past another 100 watts for 200 watts total.
    (btw, if you didn't already get the card, i'd suggest the 2GB version instead. if you do have it, no worries)

    so a quality 350-400 watt PSU is fine but to give yourself a little room to upgrade with:
    CORSAIR Builder Series CX430 V2 $44.99
    $24.99 after $20.00 rebate(s)

    anything past that is completely unnecessary! getting too big of a PSU is as bad as getting too small of one.
  8. hmm ths for the info u really explain good...:)
    i will let u kn if i go to upgrade or going to buy anything..but my graphic is OC..
    is tht already OC or i can do OC ?
    if i can do then can u tell me wht MB do i need ?
  9. fireboy said:
    hmm ths for the info u really explain good...:)
    i will let u kn if i go to upgrade or going to buy anything..but my graphic is OC..
    is tht already OC or i can do OC ?
    if i can do then can u tell me wht MB do i need ?

    Please stop with the txt speak.
  10. Best answer selected by fireboy.
  11. This topic has been closed by Mousemonkey
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