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Radeon HyperZ In Open-Source On Older Hardware

The Radeon X1800XL and X1800XT graphics cards go from sub-30 FPS at 1920 x 1080 without HyperZ to about 40 FPS with HyperZ, which is about a 40% performance boost for the R520 class GPUs.

The performance in Nexuiz was a bit weird and hitting other bottlenecks.

Having HyperZ enabled allowed the Radeon X1800XL frame-rate to go up by 26% while the Radeon X1800XT went up by 18%.