Patriot PVS32G1866LLK Viper Series PC3-15000 2GB
Test Setup, Settings & Overclocking
With DDR3 speeds ramping up on an almost weekly basis, It's extremely difficult to obtain two or more memory kits with similar specifications to perform any kind of worthwhile comparison. Therefore, the Patriot PC3-15000 kit will be placed up against the recently reviewed OCZ Platinum PC3-12800 kit with it's stock frequency, latencies and voltage changed to match the Patriot kit.
Patriot PVS32G1866LLK PC3-15000
OCZ Platinum PC3-12800
|Processor||Intel Core 2 Quad Q6600 "G0" 2.4GHz 2x4MB|
|Motherboard|| Asus P5K3 Deluxe|
|Graphics Card || Sapphire Ultimate X1950 Pro 256mb PCI-E|
|Hard Disk ||Hitachi Deskstar 80GB 7K80 SATA2 7200RPM 8mb|
|CPU Cooling ||Stock Intel Aluminium Cooler|
|Operating System ||Microsoft Windows Vista Ultimate (Latest Updates)|
|Graphics Drivers ||ATI Catalyst 7.4.44981|
|Motherboard Drivers ||Intel INF 8.300.1013|
To guarantee a broad range of results, the following benchmark utilities will be used:
Synthetic Memory Subsystem
• Sisoft Sandra XII 2008c
• Lavalys Everest 4.0
File Compression & Encoding
• 7-Zip File Compression
• River Past ViMark
3D / Rendering Benchmarks
• Cinebench 10
• Quake 4
Test Settings & Overclocking
As with all memory reviews on Overclock3D the Viper PC3-15000 modules were subjected to a series of benchmark tests under several different configurations. The configurations used tested the memory's ability to run at high frequencies with stock timings, high frequencies with loosened timings and also ensured that that the modules could run with 100% stability at their advertised speed, latency and voltage settings.
Stock Frequency & Timings
DDR3-1866 / 8-8-8-24 / 1.90v
It is an unfortunate fact that many memory kits tested here at Overclock3D fall at the first hurdle by not being able to run with 100% stability at their advertised stock settings. A recent example of this was when we tested Patriot's PDC32G1866LLK
kit and failed to perform any level of overclocking due to stability issues.
However, after several hours of intense gaming benchmarks coupled with SuperPI and Prime95 stability testing, I'm pleased to say that the Patriot Viper kit didn't falter once, managing to run at advertised speeds with 100% stability. This is extremely good news, and shows that our previous experience with Patriot's PDC1866LLK kit was more than likely an isolated incident.
Highest Frequency @ Stock Timings
DDR3-1964 / 8-8-8-24 / 1.95v
With the Viper kit already running at an extremely nippy 1866mhz, I certainly wasn't expecting to see much in the way of overclocking from these modules. However, with a little bit of extra voltage and some additional tweaking, the kit managed to hit DDR3-1964 with relative ease. This is actually the highest speed we've obtained from any DDR3 kit tested on Overclock3D without changing the manufacturers stated timings.
For those interested in getting the maximum memory overclocks out of their Asus DDR3 boards, please try the following as these proved extremely beneficial on the Patriot kit:
- Moving ram to A2 / B2 memory slots
- Set Transaction Booster to "Relaxed Level 3"
Highest Frequency @ Relaxed Timings
DDR3-1972 / 8-9-9-24 / 2.0v
Loosening the timings to 8-9-9-24 allowed the modules to be pushed even further with system stability only becoming a limiting factor at DDR3-1972 (just 28mhz short of 1ghz!!). I have no doubts in my mind that by increasing the voltage to 2.1/2.2v, we could have easily seen Viper kit hit DDR3-2000 (1000mhz) and possibly even beyond!
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