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Zalman AlCu Heatsink CNPS6500A-AlCu (3)
Overclocker 17 Feb 2002

Benchmark

  • Intel Pentium 4 ES 1.5Ghz
  • Thermaltake P4 Volcana 478 & Zalman AlCu CNP S6500A-ALCu
  • IBM 13.5GB 7200 RPM HD
  • MSI Geforce Ti200
  • 256MB Nanya DDR333 DDR CAS 2.5
  • IBM 20G ATA-133 HD 7200RPM

The benchmarks are done under room temperature of 27 Deg Celsius. RAM timings are put to 100/133 at Ultra timings. We monitor the temperatures based on WinBond Hardware Doctor Ver 2.70 provided with the ABIT SD7-533 mainboard. The fan on the zalman is turned to it's max fan speed 2482~2519rpm as recorded in the Winbond monitor.

Let's take a look at the results of Thermaltake Volcano 478 first. 

IDLE

after Q3

After 3Dmark2001

Using the Zalman

IDLE

After Q3

After 3dmark2001

Summary

CPU Temp / °C Idle After Quake3 Demo1 After 3Dmark
2001
Thermaltake Volcano 478 44°C 48.5°C 50°C
Zalman AlCu Heatsink CNPS6500A-AlCu 41°C 45.5°C 46.5°C

Conclusion

It looks like Zalman has done an impressive job of reducing the temperatures and yet maintaining a low noise as compared to high speed fans. In fact, Aluminum Copper heat sink does help to dissipate heat better. In our tests, we also turn off the fan by unplugging it the power connector. The system still functions but you can see the temperature raising to above 55°C. Under constant load of 3Dmark2001 without fan and aggressive timings, the system still functions. One thing I noticed is that when i tried to run aggressive timings, e.g. CAS 2, Ultra and at Async DDR333 (100/166) mode, 3Dmark2001 hangs after some time. This could be due to the ram. The positioning of the fan also makes a difference in the results obtained. Our test results were based on the fan blowing directly on top of the heatsink.

I would recommend this heat sink to those who uses the heatsink/fan for normal PC usage and those who runs it at non-overclocked environments to make the system noiseless.

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