[Nottingham] OpenGL and OpenCL on nVidia GeForce 400 Series

Martin martin at ml1.co.uk
Thu Dec 9 00:57:30 UTC 2010


Anyone know how serious an issue this is?

nVidia GeForce 400 Series OpenGL Problems

The problem is that the GTX470/GTX480 suffer half or 1/4 the transfer
speeds for glReadPixels() compared to the previous generation cards

Is that a killer for OpenCL calculations? Or just a slowdown for 3d
render applications such as Blender?

Is it a problem through the entire 400 series range?

Keep with the 200-series? Or does the new Fermi architecture include
'must-have' features?


Martin Lomas
martin at ml1.co.uk

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