ScienceMark 2.0	Source: ScienceMark

Mol Dyn: Molecular Dynamics is a method for simulating the thermodynamic behaviour of materials using their forces, velocities, and positions. Most important of the afore mentioned is the force. Primordia: This code calculates the Quantum Mechanical Hartree-Fock Orbital for each electron in any element of the periodic table Lower times indicate better results.

ScienceMark 2.0
Mol Dyn	Points	Ranking
Intel Pentium D 840 (WinXP 32/32 Bit)	80.69
Intel Pentium D 840 (WinXP 64/32 Bit)	80.38
Intel Pentium D 840 (WinXP 64/64 Bit)	35.75
Intel Pentium D 940 (WinXP 32/32 Bit)	75.42
Intel Pentium D 940 (WinXP 64/32 Bit)	75.44
Intel Pentium D 940 (WinXP 64/64 Bit)	33.15
AMD Athlon64 4000+ (WinXP 32/32 Bit)	71.56
AMD Athlon64 4000+ (WinXP 64/32 Bit)	71.56
AMD Athlon64 4000+ (WinXP 64/64 Bit)	22.41
AMD Athlon64 FX-60 (WinXP 32/32 Bit)	56.29
AMD Athlon64 FX-60 (WinXP 64/32 Bit)	56.29
AMD Athlon64 FX-60 (WinXP 64/64 Bit)	18.46
AMD Athlon64 X2 5000+ (WinXP 32/32 Bit)	56.94
AMD Athlon64 X2 5000+ (WinXP 64/32 Bit)	56.94
AMD Athlon64 X2 5000+ (WinXP 64/64 Bit)	19.43
AMD Athlon64 FX-62 (WinXP 32/32 Bit)	52.89
AMD Athlon64 FX-62 (WinXP 64/32 Bit)	52.89
AMD Athlon64 FX-62 (WinXP 64/64 Bit)	16.95
AMD Sempron 3600+ (WinXP 32/32 Bit)	83.15
AMD Sempron 3600+ (WinXP 64/32 Bit)	83.15
AMD Sempron 3600+ (WinXP 64/64 Bit)	40.61
Primordia	Points	Ranking
Intel Pentium D 840 (WinXP 32/32 Bit)	441.35
Intel Pentium D 840 (WinXP 64/32 Bit)	438.53
Intel Pentium D 840 (WinXP 64/64 Bit)	269.58
Intel Pentium D 940 (WinXP 32/32 Bit)	425.33
Intel Pentium D 940 (WinXP 64/32 Bit)	425.32
Intel Pentium D 940 (WinXP 64/64 Bit)	252.32
AMD Athlon64 4000+ (WinXP 32/32 Bit)	340.15
AMD Athlon64 4000+ (WinXP 64/32 Bit)	340.08
AMD Athlon64 4000+ (WinXP 64/64 Bit)	244.56
AMD Athlon64 FX-60 (WinXP 32/32 Bit)	261.41
AMD Athlon64 FX-60 (WinXP 64/32 Bit)	261.25
AMD Athlon64 FX-60 (WinXP 64/64 Bit)	231.18
AMD Athlon64 X2 5000+ (WinXP 32/32 Bit)	255.76
AMD Athlon64 X2 5000+ (WinXP 64/32 Bit)	255.73
AMD Athlon64 X2 5000+ (WinXP 64/64 Bit)	235.74
AMD Athlon64 FX-62 (WinXP 32/32 Bit)	244.49
AMD Athlon64 FX-62 (WinXP 64/32 Bit)	244.37
AMD Athlon64 FX-62 (WinXP 64/64 Bit)	213.26
AMD Sempron 3600+ (WinXP 32/32 Bit)	352.36
AMD Sempron 3600+ (WinXP 64/32 Bit)	352.04
AMD Sempron 3600+ (WinXP 64/64 Bit)	276.46

We definitely can see the impact of L2 cache on the ScienceMark 2.0 benchmarks. If you need to do some hard computing, you'll definitely want to invest in a more powerful processor. Moving to a 64-bit platform does not do much for 32 bit applications (as we all know already) however jumping to 64 bit apps does give a significant performance boost and brings the 2.0GHz AMD Sempron 3600+ performance closer to that of the other processors.