Use PCI-E 2.0 x 16 Graphic card in PCI-E x 16 Motherboard

I wouldn't. Cards at that level are going to start being bottlenecked by PCI-E 1.0

Not to mention an HD5850 + An OC will tear down the GTX470.

Yes it will work.

PCIe x16 2.0 is just double the bandwidth ofa a normal PCIe x 16

You will be able to play games very well...but considering u have PCIe x16 with half the data flow will throttle your card.

Basically, it will perform at half its potential.

I'd recommend that you get a new motherboard with 2.0 PCIe on it. Core 2 MOBO's are fairly cheap

Hope this helps

Uber

It won't perform at half its potential, but you might lose about 15-20% performance.

thanks @ shadow187 and @ UberGenocide

for your answer...

Not worth thinking about, only begins to show difference at about 4x I believe and even then it is game specific.

@ Latestyouwant: Yes and the performance drop will be very small:

http://www.techpowerup.com/reviews/AMD/HD_5870_PCI-Expr...

And from the Green Team:

http://www.techpowerup.com/reviews/NVIDIA/GTX_480_PCI-E...

Note, those articles use a PCI-E 2.0 MB, even so, at 4x the bandwidth is still only equal to PCI-E 1.0 at 8x!
It is far more likely, given the CPUs that the motherboard can support that that will be the limiting factor, rather than PCI-E bandwidth.

How do you figure? Half the bandwidth = half the performance...or am i wrong

Please explain

Uber

EDIT: sorry i read it wrong...u lose 15 to 20 percent...not just getting 15 to 20 percent performance

Because at x16 2.0 will not use the full bandwidth.

And would someone please post a sticky on this subject?
Not that anyone will read it