Does my motherboard intel DG31PR have PCI-E 2.0 16x?

i want to buy a "EVGA GeForce GTX 550 Ti Superclocked" and add it to my motherboard...will it work on my rig.? im currently using 450w power supply do i need to change it too? my motherboard is mentioned's a pci express 1.

here is a link of the vga..

i also have a noob CRT bt that wouldn't be a problem right? (viewsonic e71f ,monitor)

Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz (2 CPUs), ~3.0GHz
4096MB RAM
Hard Drive:
500 GB Total
Video Card:
Intel(R) G33/G31 Express Chipset Family (Microsoft Corporation - WDDM 1.0)
Generic PnP Monitor (viewsonic e71f)
Sound Card:
Speakers (High Definition Audio Device)
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  1. Your Motherboard seems to have a PCI-E 2.0 X16 See website:

    As for your Power supply, it will probably be able to handle it but I would double check with this:

    Not sure If that CPU will bottleneck the GPU as well, since I'm an AMD fanboy and not as familiar with Intel CPU's
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