Ati have again leaked some Radeon X1950XT, X1950XTX, and X1950 Crossfire benchmarks. These benchmarks show a more skewed, read 'optimised' towards ATi, results than the Radeon X1950 Crossfire benchmarks leaked by an Ati vendor.
Here are the leaked single-slot benchmarks, which oddly show the X1900XTX being faster than the GeForce 7950 GX2.

Second, here are the leaked dual-card benchmarks to show Crossfired X1950 cards beating quad SLi, which is believable seing as quad SLi is rather buggy.

Until a full set of benchmarks by an independent review site, such as
Anandtech appear, I would continue to use the
Radeon X1950 Crossfire benchmarks leaked by one of ATi's vendors instead of these ones.