Thanks for the info on known issues for GPUs.

I’m in the process of building a system to run my newly arrived XP10 discs…. I had planned on buying the Radeon 7970 as on paper it blows away all the other single GPU cards. However I note that several ppl are having very poor performance on this card at the moment.

Can you do a piece on what the high end ATI/AMD card performance issue is? Any more info would be useful to help inform peoples decisions.

Many Thanks

Not any time soon – file a bug!

Can you please look what’s going on here and why this is not looking like a solid water body:
http://www.urlgone.com/d6eb29/

Hey, if YOU are happy then I am happy! My point is only that you can read its stats and the 6970M is cut down quite a bit compared to the 6970, so users should expect to tune settings accordingly. (Users who do not realize the 6970 and 6970M are quite different might be surprised that HDR at 1440p is slow.)

We _are_ trying to optimize fill rate – it’s a top prio. So things may get a bit better.

Ilari,

keep in mind that the Radeon 6990 is a Dual-GPU card (just as GeForce 590 GTX is). This means that the card has two GPUs in it, and behaves exactly like You had two traditional single-GPU cards configured in Crossfire to share workload.

It is known that a 3D application must be developed according to specific guidelines to take advantage of multiple GPUs, and *at the moment* X-Plane does NOT support such a configuration.

Therefore You can actually expect similar performance figures as You had a single-GPU Radeon 6970. As for future improvements on this aspect, it is up to LR folks…

Regards,
Filippo

You don’t have the high end 6970. You have the 6970M (mobile) – compare fill rate between the two on Wikipedia!

http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units

Your machine also comes with a huge 2560 x 1440 monitor. So you have a ton of pixels on what is fundamentally a laptop GPU.

We do want to improve fill rate efficiency, don’t get me wrong! But you are also trying to get a lot of performance out of a machine that has been optimized to be thin, not fast.

Yes. And HDR kills me…

GeForce ones.