Patriot Viper II Sector 7 PC3 14400 Cas 9 6GB Reviewccokeman - August 1, 2010
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Testing the Patriot Viper II Sector 7 1800MHz will require the use of a small overclock to get the rated speeds. To keep the CPU close to its 2.66Ghz clock speed I will be reducing the clock multiplier and raising the bclock to get the 1800MHz speed. The testing will include both stock and overclocked testing to see just how much headroom this set of modules has. Each set of modules is tested in this method to keep the CPU as close to the 2.66Ghz default speed as possible.
- Processor: Intel Core I7 920
- Cooling: Cooling: Air:Noctua NH-U12P SE 1366
- Motherboard: MSI X58 Eclipse SLI
- Memory: Patriot Sector 7 9-9-9-27 1800MHz
- Video Card(s): Sapphire HD 5870 1GB
- Power Supply: Mushkin 800 watt Modular power supply
- Hard Drive: 1 x Seagate 1TB SATA
- Optical Drive: NEC DV5700
- OS: Windows 7 Professional 64-bit
- Case: Thermaltake Armor +
- Comparison Module #1: Mushkin Redline 996805 6-8-6-24 1600MHz
- Comparison Module #2: G.Skill Pi Series 7-8-7-24 1600MHz
- Comparison Module #3: Mushkin 998687 8-9-8-24 1866MHz
- Comparison Module #4: Corsair Dominator TR3X6G1600C8D 8-8-8-24 1600MHz
- Comparison Module #5: Kingston HyperX T1 9-9-9-27 1600MHz
- Comparison Module #6: Mushkin Blackline 998677B 7-7-7-20 1333MHz
CPU-Z: This application shows us the settings that we have chosen in the BIOS. Items shown in this application include CPU speed and bus settings, motherboard manufacturer, BIOS revisions, memory timings, and SPD chip information.
Task Manager: We use this utility to show physical memory, kernel memory, page file, and processor usage.
- Processor: Intel Core i7 920
- Memory: Patriot PC3 14400 Sector 7 2074MHz 9-10-9-27
To reach the 1800MHz speed required, an increase of the bclock to 150MHz was needed. This was needed since the memory ratios skipped from 1600MHz to 1866MHz based on the factory default bclock setting of 133MHz. Overclocking the Sector 7 modules went pretty smoothly up until just over the 2000MHz mark. Bumping the QPI volts up on the modules helped stabilize the overclock as the speed increased. Once above ~2000MHz I had to bump up the TRCD setting to 10 to keep going and higher. The highest stable clocks I could achieve with this set was 2074MHz with timings of 9-10-9-27. Going higher than this is possible, but a those latencies, it really starts to hit performance so cas 9 was the maximum tested. What this means is that this set had 135MHz of overclocking headroom or a good solid 15%. While big speeds are always nice when you are chasing records some people don't overclock their systems but still want higher rated memory. In that case the Patriot Sector 7 modules sub timings can be tightened up to 7-8-7-24 for some increased performance at the rated 1800MHz. Pretty solid results from a kit that is competitively priced.
The maximum memory speed for each set of modules when overclocked is a measure of how well the modules ran on these particular modules and test system. As such, your results may differ in either a positive or negative way based on the capabilities of your hardware. That said, your mileage may vary!
The benchmarks used in this review include the following:
- CPU-Z Version 1.54
- Windows Task Manager
- PCMark Vantage
- Geekbench 2.1
- Super Pi 1.5
- SiSoft Sandra 2010
- Batman Arkham Asylum