PCMark04	Source: FutureMark

PCMark04 is an application-based benchmark and a premium tool for measuring overall PC performance. It uses portions of real applications instead of including whole applications or using specifically created code. This allows PCMark04 to maintain a smaller installation size while still giving accurate results.

PCMark04:
Overall	Points	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	6316
2x 512MB Crucial Ballistix PC2-5300 (200/667)	6441
2x 512MB Corsair Twin2X1024-8000UL (200/800)	6526
2x 512MB Corsair Twin2X1024-8000UL (239/957)	7113
Memory	Points	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	5144
2x 512MB Crucial Ballistix PC2-5300 (200/667)	5209
2x 512MB Corsair Twin2X1024-8000UL (200/800)	5220
2x 512MB Corsair Twin2X1024-8000UL (239/957)	5971

PCMark04 scales nicely as the memory bandwidth is increased. Overclocking boosts overall scores too.

PCMark05	Source: FutureMark

PCMark05 is a premium tool for measuring both normal home use and simple 3D performance of the latest PC hardware. There are 11 system tests - each one is designed to represent a certain type of PC usage. By running these tests, PCMark05 stresses the components in a similar manner as they are stressed in normal home usage.

PCMark05:
Overall	Points	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	6103
2x 512MB Crucial Ballistix PC2-5300 (200/667)	6095
2x 512MB Corsair Twin2X1024-8000UL (200/800)	6142
2x 512MB Corsair Twin2X1024-8000UL (239/957)	6447
Memory	Points	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	4103
2x 512MB Crucial Ballistix PC2-5300 (200/667)	4126
2x 512MB Corsair Twin2X1024-8000UL (200/800)	4124
2x 512MB Corsair Twin2X1024-8000UL (239/957)	4874

Things are closer overall in PCMark05, and overclocking boosts the memory score.