So here is my question for those GPU experts among you: how true is this likely to be for my media pc? It has a GigaByte GA-K8NS-939 that has 3GB of DDR400 memory. It has a dual-core AMD Athlon 64 X2 3800+ running at 2GHz. And of course AGP.
I am not interested in the absolute highest frames/second on games, just hope to take advantage some of DX10 if possible. The automobile metaphor above was cute, but does anyone really know the bandwidth requirements well on this or is that just a hard-core gamer poo-pooing something that is not top end (no offense intended, this is an honest question).
If DX10 would have marginal or no benefit over DX9 on my system above with AGP, then I will not wait any longer and get a medium-high DX9 card that is known to have stable Vista drivers. (Any recommendations from the peanut gallery on this?)
Thanks in advance, much, for any info here.
It's only a matter of guessing until DX10 games actually come out, but I would expect that they will be rather CPU-demanding, and an X2 3800+ will
probably not cut it. I guess you could look at getting an Opteron 185 (essentially an FX-60) to put in the board if you wanted to get some more life from socket 939, but I wouldn't personally, as you can get a new Intel C2D or AMD socket AM2 motherboard and processor for less than the price of the Opty 185. I would definitely look into the Intel version
ASRock Dual-VSTA board and a low-end C2D like the E4300, that would support AGP and PCIe, as well as let you still use your DDR RAM (AM2 doesn't support DDR, only DDR2), if you were willing to spend enough to replace the CPU. Otherwise, I'd leave it alone and get a decent AGP card.
As for the AGP vs PCIe bandwidth, I think that only comes into play with very fast GPUs like the GF8800GTX. Check
this article out about PCIe scaling, and remember that AGP8x has a bandwidth of 2.0 GB/s as a point of reference. You should not count the PCIe's duplex bandwidth, just the single direction bandwidth, since the video card is primarily a uniderectional data flow (CPU -> GPU). All that said, they will probably not release the very best cards in AGP, but I doubt the bandwidth would cripple a moderate card.
The best AGP video card available now is the
X1950XT, only available from GECUBE as far as I know. The next best, and available from many vendors, AGP card is the X1950Pro. I'd go for the X1950Pro myself, it's a huge upgrade over a GF5xxx series, and you can snag
one from HIS for $185 after rebate.