Benchmarks Of GCC 4.5.0 Compiler Performance
Written by Michael Larabel in Software on 19 April 2010. Page 4 of 6. 44 Comments

There was a regression hurting the multi-threaded C-Ray ray-tracing engine in GCC 4.4 that caused it to run noticeably slower than GCC 4.3, but fortunately that appears to be mostly cleared up with the 4.5.0 release.

The OpenMP-driven GraphicsMagick application is running slower with GCC 4.4/4.5 when using the HWB Color Space conversion task.

Image resizing in GraphicsMagick is also slower with the 4.4/4.5 generated binaries.

The image sharpening performance though is marginally faster when built with GCC 4.4/4.5.