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Wednesday, November 21, 2007
Corsair Dominator TWIN3X2048-1800C7DFG

3. Comparison with other DDR3 modules

The Corsair TWIN3X2048-1800C7DF G has the advantage to perform CL6 at DDR3-1600 and CL7 at DDR3-1800, therefore it has the advantage in all possible benchmarks. We wanted to compare the new memory modules with other DDR3 memory, so we used the following memory timings/cache latencies:

DDR3 comparison
Memory Frequency
Real Frequency
Voltage
FSB:RAM
CPU x
FSB
CPU Speed
DDR3 1067
CL5-5-5-15 (1T)
533,50
1.80
1:2
9
267
2403
DDR3 1150
CL5-5-5-15 (1T)
575,00
2.00
1:2
9
288
2592
DDR3 1250
CL5-5-5-15 (1T)
625,00
2.10
1:2
9
313
2817

In all cases we used the same timings and the same CPU internal multiplier. All these tests were performed with the following Bios settings:

  • AI overclocking: Manual
  • CPU Ratio Manual: 9
  • FSB Strap: Auto
  • FSB Frequency: 266~313
  • PCI Frequency: Auto
  • DRAM Frequency Manual: Auto calculated from FSB:RAM (1:2) divider
  • DRAM Command Rate Manual: 1T
  • DRAM Timing Control Manual: 5-5-5-15
  • DRAM Static Read Control: Auto
  • DRAM Dynamic Write Control: Auto
  • Transaction Booster: Auto
  • Clock Over-charging mode: Auto
  • CPU/PCIE Spectrum: Disabled
  • CPU Voltage, CPU Voltage Reference, CPU Voltage Damper, CPU PLL Voltage, DRAM Voltage, FSB Termination Voltage, North Bridge Voltage, North Bridge Voltage Reference, South Bridge Voltage: Auto

Memset offers information about what exactly memory timings Asus P5K3 Deluxe has chosen:

All test results are showed below:

The Crucial DDR3-1600 seems to perform not only equal but better than Corsair DDR3-1800 in most Sisoft Sandra tests. Things seem to change in SuperPI, since SuperTalent had the lowest SuperPI 2M calculation time:

Lastly, in Science Mark, the Corsair DDR3-1800 achieved the highest performance




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