DDR3 Round-Up: Core i7 Performance Analysis

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Testbed and Synthetics

Test System Details
Specifications and Revisions

  • Intel Core i7 920 (2.66 GHz Quad-Core, 45nm)
  • Asus P6T Intel X58 Motherboard
  • Nvidia GeForce 9600 512 MB
  • Western Digital VelociRaptor 150 GB SATA-II 10K RPM Hard Drive
  • Plextor PX-755SA DVD+/-RW Drive
  • Corsair HX620W 620W Power Supply
  • Microsoft Windows Vista Ultimate Edition (64-bit, SP1)

  • Patriot Baseline Set (1066 MHz, CAS 9-9-9-24)
  • Corsair XMS3 Dominator (1866 MHz, CAS 9-9-9-24)
  • OCZ Platinum XT (1600 MHz, CAS 7-7-7-24)
  • Kingston HyperX 1600 (1600 MHz, CAS 8-8-8-24)
  • Kingston HyperX 1800 (1800 MHZ, CAS 9-9-9-27)
Synthetic Memory Benchmarks
SiSoft Sandra 2008 SP1

With their stock settings enabled, the OCZ Platinum and Corsair Dominator modules give the best performance out of box. Both deliver about 26.5 GB/s of memory bandwidth with sub-60ns latencies. Our Kingston HyperX modules delivered about 24 GB/s with 60ns+ latencies. The OCZ modules tested surprisingly well here, considering they are running at a significantly lower clock speed compared to the Corsair. However, our Corsair modules have fairly high latencies by default, whereas the OCZ modules are a tight 7-7-7 which helps make up for the clock speed deficiencies.

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