--- On Fri, 1/21/11, Uwe Soltau <[email protected]> wrote:
> I now discovered that the new cards are all for PCIe 2.0 x
> 16. My
> motherboard has only a PCIe x 16 slot.
> Will such a card work on such a motherboard (backwards
> compatible) obviously with reduced performance?
You'll just have to do research to find out if a PCIe 2.0 or 2.1 card is
backwards compatible with PCIe 1.x Some may not be, though they're supposed to
be.
PCIe 3.0 specifications should be finalized soon, so expect in the next couple
of years that will begin to be all that's available in new video cards.
Fortunately the older PCIe cards will all work with all newer PCIe versions.
> Do you think a better graphics card alone would help at
> all?
It can if the video card is slow enough to be a performance bottleneck. Having
a "too fast" video card is not a bad thing. :) Then it won't be holding back
the performance of any other part of the computer.
For the adventurous, it's possible to cut a slot in the front end of a PCIe
slot to plug in a card longer than the slot. It works because all the control
lines are in the space of the x1 slot with the rest all being additional data
lanes. All PCIe cards are supposed to be able to function with from 1 to the
maximum number of lanes on the card in use. (Would be neat if some board
manufacturer would invent open ended PCIe slots. Could have a buttress molded
on either side to reinforce the open end.)
That's why some boards have things like x4 slots that are only half connected
and it's how the external ExpressCard to PCIe video card boxes for laptops
work. They have an x16 sized slot but ExpressCard is only PCIe x1 plus USB 2.0.
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