HEXUS Pifast CL5

Hexus Pifast computes, based on a multithreaded algorithm 10'000'000 decial places of Pi. Therefore it is possible to provide every core of the CPU with 100 percent load. Like this it is possible to show differences between different architectures.

We decided to test the GTX2 Modules using 1.8 VDImm and 5-7-7-21-T1 timings whereby the time it took to compute the decial places is not relevant. What we were looking for has been the point where the memory stopped scaling with lowering the temperature.
 

HEXUS Pifast		Percent
25°C	1622Mhz	100.00 %
15°C	1682Mhz	103.60 %
5°C	1750Mhz	107.00 %
-5°C	1820Mhz	112.20 %
-15°C	1880Mhz	115.90 %
-25°C	1916Mhz	118.10 %
-35°C	1940Mhz	119.60 %
-45°C	1965Mhz	120.60 %
-55°C	1964Mhz	121.10 %
-65°C	1968Mhz	121.30 %
-75°C	1950Mhz	120.30 %

At a temperature of -70°C the graphs culmination point is reached and relative to the best result the results start to scale negatively. In our test the best operating temperature for the Corsair GTX2 modules was -65°C. Therefore we could see a remarkable increase of 21 percent clockwise.

Page 1 - Intorduction	Page 5 - Setup
Page 2 - Preview	Page 6 - Test
Page 3 - Specifications	Page 7 - Conclusion
Page 4 - Test System

Discuss this article in the forums