Fedora 16: how to disable vsync for Intel Graphics card?

[Sagari]

Hello,

Motherboard: Asus P7H55-M PRO
CPU: Intel i3 530

Fedora 16 x86_64 is used, the default X11 setup (no xorg.conf)

The glxgears shows slow performance, i.e.

372 frames in 5.0 seconds = 74.273 FPS
375 frames in 5.0 seconds = 74.851 FPS
375 frames in 5.0 seconds = 74.846 FPS
...

and warns vsync is in effect. I have looked for vsync disabling instructions, but they expect Xorg conf files I haven't (defaults are used).

What is the simplest way in such a case to disable vsync, to get faster video rendering?

Thanks.