A color buffer cache may be implemented in a way that reduces memory bandwidth. In one embodiment this may be done by determining whether a corresponding tile being rendered is completely inside a triangle. If so, the cache lines that correspond to this tile may be marked as “less useful”. As a result of being marked as less useful, those cache lines may be replaced before other cache lines in one embodiment. Thus a color buffer cache is used for those tiles that overlap with at least one triangle edge. The use of such a color buffer cache scheme may be more efficient and therefore may reduce memory bandwidth in some embodiments.