Futuremark has released a patch for 3DMark03. With this new 3DMark03 patch, a user can now specify whether he wants specific tests that can run using ps_1_1 code paths or ps_1_4 code paths to run in either code paths. I'd also checked out the performance benefit of two-sided stencil in 3DMark03. A Radeon 9700PRO is used.
PS 1.1 versus PS 1.4 in 3DMark03.
PS 1.1 versus PS 1.4 in 3DMark03.