Thermalright T-Rad2 Video Card GPU Cooler

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Test System

Thermaltake TRad2 

I used my temporary LGA775 Intel test system to test the heatsink. The card I’m using is a voltage modified Gigabyte HD 4850 that’ll let me adjust the core frequency and voltage from a stock HD 4850, stock HD 4870, and a heavily overclocked HD 4850/4870. I used a single 25mm thick 120mm wide fan that rotated at 1200 RPM and blew 60CFM.

For testing purposes I started with a 15 minute idle period followed by a 15 minute load period with the average temperature measured for the final 5 minute of the load period. This was repeated for each frequency/voltage combination and then each heatsink was also completely tested three times with the average temperatures presented as results.

Intel Test Platform



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Intel Core 2 Quad QX9650

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Asus X48 Rampage Extreme

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Corsair PC3-14400C7 Dominator 2x1GB

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Video Card

Gigabyte HD4850

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Hard Drive

Seagate 7200.10 320GB

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QX9650 Box Cooler

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Power Supply

Corsair HX1000 PSU

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Operating System

Windows Vista Ultimate

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