HD 5870 and GTX 480 side by side
Do you remember this news ? Two years ago, it was possible to run in the same time a Radeon for 3D rendering and a GeForce for PhysX simulations.
But these last times, some bugs, like like this one AND weird phenomenons like the reverse gravity timebomb, have prevented the use of a dedicated GeForce for PhysX when a Radeon is used for 3D graphics rendering.
But in the new NVIDIA graphics drivers R257.15, another weird phenomenon has suddenly fixed everything: now you can use a GeForce for PhysX and a Radeon for graphics in the same time!
Great news my friends especially for Radeon owners. Hybrid PhysX is back!
GenL’s quotation (GenL is the author of the PhysX patch):
In Windows XP i’ve just extended the fake desktop, and on Windows 7 i created one non-extended – that’s all i needed to get GPU-PhysX working. And even more surprising – timebomb issue is gone too, at least for its normal time interval (~30 seconds in FluidMark).
Okay let’s make a test. In my testbed, I plugged a Radeon HD 5870 with Catalyst 10.5 and a GeForce GTX 480 with R257.15. After having tweaked Win7 desktop to enable GPU PhysX (like said right above and thanks to the video at the end of the post), I launched PhysX FluidMark 1.2.0.
And… THAT WORKS!
The following screenshot is the proof:
Click to enlarge
And here are the scores:
Score for 60’000 particles – HD 5870 and GTX 480
Score for 120’000 particles – HD 5870 and GTX 480
Good job NVIDIA!
Let’s hope it’s not an error from NVIDIA…
The HD 5870 and GTX 480 together in GPU-Shark (simplfied view)
PhysX on ATI 5870 / GeForce 470GTX – ATI 10.5 / NV 257.15 beta:
[youtube BRikKybcno0]
Need to make sure they don’t read this before the WHQL release!
Maybe there is a relation between this unclock and the departure of Manju Hedge 😉
i can now use my 9400GT again for physx even tho its not worth it next to a GTX470!
i noticed this a few days ago when playing with 257.15s..it allowed me to set CUDA on the 9400GT only and inturn allowed me to run physx! This will help thoes with <32 cores
Interesting, but without an official statement, this should be regarded as a….bug, lol!
thank for information man,
this will realy help me
actually it IS a bug:
“Yes, this is a bug in the latest build of PhysX that was packaged with the driver. We’ll be fixing this issue ASAP – the WHQL driver launching in early June won’t have this issue. -NVIDIA”
“NVIDIA tells us that they will also be “fixing” the 257.15 beta driver on their site, so new downloads of that driver will have the restriction in place”
http://www.anandtech.com/show/3744/nvidia-forceware-257-heterogeneous-gpu-physx-its-a-bug-not-a-feature
official statement here:
http://blogs.nvidia.com/ntersect/2010/05/update-on-release-256-physx-support-1.html
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