Comment 38 for bug 252094

I don't have an Intel graphics chipset, but I find 3D in Intrepid is considerably slower with an nvidia chipset as well - in Hardy with compiz on, I get close to 5000 fps, but in Intrepid with compiz on I get either 4200 fps with the older 173.14.12 driver or 3000 fps with the new 177.80 driver (40% slower!). With compiz off both Hardy and Intrepid can manage around 5800 fps.

So maybe this bug also has something to do with compiz?