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.

Scores are measured in seconds; lower times indicate better results.

ScienceMark 2.0 Benchmark Results
Mol Dyn	seconds	Ranking
Pentium 4 540	83
Athlon64 3800+	68.42
Athlon64 4000+	72.35
Athlon64 X2 4800+	62.31
Athlon64 X2 4800+ 64-bit	62.43
Pentium D 840	80.69
Pentium D 840 (4.02GHz)	64.64
Pentium D 840 64-bit	80.38
Primordia	seconds	Ranking
Pentium 4 540	471.47
Athlon64 3800+	341.45
Athlon64 4000+	344.09
Athlon64 X2 4800+	267.62
Athlon64 X2 4800+ 64-bit	282.94
Pentium D 840	441.35
Pentium D 840 (4.02GHz)	354.8
Pentium D 840 64-bit	438.53

The Sciencemark 2.0 benchmark obviously gains no advantage from 64-bit operation. The dual-core Intel Pentium D 840 posts noticeably better results than the Pentium 4 540, especially when overclocked. At stock it lags behind both the single and dual-core AMD processors in this benchmark though.

ScienceMark 2.0 64-bit	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. This is the 64-bit version of the benchmark and requires a 64-bit operating system and compatible processor to run.

Scores are measured in seconds; lower times indicate better results.

ScienceMark 2.0 64-Bit Benchmark Results
Mol Dyn	seconds	Ranking
Athlon64 X2 4800+ 64-bit	21.63
Pentium D 840 64-bit	35.75
Primordia	seconds	Ranking
Athlon64 X2 4800+ 64-bit	243.27
Pentium D 840 64-bit	269.58

Our second pure 64-bit benchmark sees the Athlon64 X2 4800+ considerably ahead of the Intel Pentium D 840 in the Mol Dyn test, but the Intel processor posts a much improved result in the Primordia test. Both scores are outstanding, showing the power of the new dual-core, 64-bit processors as they tear through the benchmarks in half or a quarter of the time taken in 32-bit mode.