4870 bottleneck?

Will the Radeon 4870 be bottlenecked by my Mobo GA-EP35-DS3R?

mainly becouse its not PCI 2.0, its PCI x 16.

ah cool thanks :)

i was just scared becouse this is the next gen card, and the bandwith it bigger.

It sure bottlenecks that's a fact. If you want the best performance for a PCIe2.0 card you'd be best to buy a PCIe2.0 motherboard.

Taking a look at those benchmarks that were posted here were for 3850 card which is a lot less performance than a 4870.

Still it bottlenecked Flight simulator by quite a bit and everyone could do with an extra frame or 2 on Crysis. They should have done some more games like Assassin's creed, Supreme commander, world in conflict etc, the ones tough on the GPUs not old games based on the doom3 engine.

So that's the benchmark I'm going to point out to show the Bottleneck.

so does my mobo only have 8x?

again this is my mobo GA-EP35-DS3R PCI-E x16 (dosent the 16x mean i have 16x like those benchmarks above?)

so does my mobo only have 8x?

again this is my mobo GA-EP35-DS3R PCI-E x16 (dosent the 16x mean i have 16x like those benchmarks above?)

costyssj4

Your mobo has pci-e x16, don't worry. There's no bottleneck, IF there is (big IF) you lose 2-3 fps at the most. Nothing to lose sleep over. And pci-e 1.0 or 1.1 != x8

Thanks :) well thats a relief, i guess it wasent worth paying 100+ dollars even if i loose 10%, so if the difference is so small

i guess im very happy with what i have now.

I don't think that PCI-e 2.0 at 8x necessarily equals PCI-e 1.1 at 16x. I see where you would get that (double the bandwidth, half the lanes), but I don't think it's that simple. I really wish there were some benchmarks out there comparing the two.kodex1717

So they may be a bigger difference with PCIe1.1 and PCIe2.0 than those benchmarks show because PCIe2.0 has more advantage and simply halfing them is not the same. I see what you mean. PCIe2.0 is a better architecture and enhanced consistency and readability and signalling etc. PCIe2.0 removes a lot of the signal integrity issues such as reflections and excessive signal jitter associated with longer, multi-drop buses. Cleaner signals mean tighter timing tolerances, reduced latencies, and faster, more efficient data transfers.