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	Seconds	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
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
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
Primordia	Seconds	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
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
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

ScienceMark 2 results for the Intel Pentium D 940 when it is running in pure 64-bit mode with a 64-bit operating system are quite competitive to much of what the various AMD Athlon64 processors are capable of yielding. The increased L2 cache certainly aides the Pentium D 940 a bit here and there, although it is still a ways behind the AMD Athlon 64-based test systems.