https://bugs.freedesktop.org/show_bug.cgi?id=31635
--- Comment #1 from Roland Scheidegger sroland@vmware.com 2010-11-15 12:51:46 PST --- There are a couple of asm optimizations which are only available on 32bit and not not 64bit (or some of them only on 64bit with 3dnow). Your gpu doesn't support hw TCL so this could maybe make a difference. But gallium drivers shouldn't really be affected by this. Some profiling data might help possibly.