PCMark2002	Source: FutureMark

PCMark can be used on desktop PC's, Laptops and even Workstations and tests everyday computing from home to office usage. PCMark specifically stresses the CPU, memory subsystem, graphics subsystem, hard drives, WindowsXP GUI (if WinXP is used), video performance and even laptop batteries.

PCMark2002 Benchmark Results
Memory	PCMarks	Ranking
AMD Athlon64 System Results
2x 512MB Corsair TwinX3200XL (200/400)	9046
2x 512MB OCZ PC3200 Plat LTD Ed (200/400)	9043
2x 512MB GeIL Ultra-X PC3200 (200/400)	9045
2x 512MB GeIL Ultra-X PC3200 (227/454)	9573
Intel Pentium 4 System Results
2x 512MB Corsair TwinX3200XL (200/400)	9106
2x 512MB OCZ PC3200 Plat LTD Ed (200/400)	9099
2x 512MB GeIL Ultra-X PC3200 (200/400)	9108
2x 512MB GeIL Ultra-X PC3200 (240/480)	10026

It's funny to see the single channel Athlon64 perform so well here compared to the dual channel memory controller Pentium 4's use.

PCMark04	Source: FutureMark

PCMark04 is the latest version of the popular PCMark series. PCMark04 is an application-based benchmark and a premium tool for measuring overall PC performance. It uses portions of real applications instead of including very large applications or using specifically created code. This allows PCMark04 to be a smaller installation as well as to report very accurate results.

PCMark04 Benchmark Results
Memory	PCMarks	Ranking
AMD Athlon64 System Results
2x 512MB Corsair TwinX3200XL (200/400)	3684
2x 512MB OCZ PC3200 Plat LTD Ed (200/400)	3688
2x 512MB GeIL Ultra-X PC3200 (200/400)	3678
2x 512MB GeIL Ultra-X PC3200 (227/454)	3926
Intel Pentium 4 System Results
2x 512MB Corsair TwinX3200XL (200/400)	4295
2x 512MB OCZ PC3200 Plat LTD Ed (200/400)	4338
2x 512MB GeIL Ultra-X PC3200 (200/400)	4316
2x 512MB GeIL Ultra-X PC3200 (240/480)	5107

Things are a bit farther apart here... but at stock speeds everything is about the same.