jmke

In 2008 TTIC (nPowertek), known for their heat column technology, will introduce a VGA cooler integrating their cooling tech. It was quite a challenge to get the product to be compact and still carry the advantages of the heat column, but it seems like they pulled it off.

The TTIC GAT-300 will fit 8600 and 8800 NVIDIA cards:


Here you can see the heat column in the middle:


TTIC send along some early test data with a simulated heat source to see how their unit did, they express their results in °C/W; amount of the °C increase per Watt; the lower the number, the better.

They run their tests inside a 50°C chamber and compare it to the Zalman VF-900; their units were build with Copper and Aluminum Copper; here are their results:


It's worth nothing that the GAT-300 fan is running ~300rpm faster than the Zalman unit. Nevertheless, only by looking at the TTIC results, the most interesting data can be seen; as the load increases, so does the cooling capacity of the GAT-300. The Zalman unit gets hotter as the load increases, the GAT-300CU (and AlCu) get cooler.

From OC.com

For the DATA presented above; Taking 60W for 8600 range, 100W for 8800 range, 25°C room temp:

GAT-300CU: (60 x 0.465) + 25 = 52.9°C
ZalmanCU: (60 x 0.558) + 25 = 58.5°C

GAT-300CU: (100 x 0.451) + 25 = 70.1°C
ZalmanCU: (100 x 0.751) + 25 = 100.1°C

Hopefully at the start of the New Year, we'll be able to verify these quite promising test results


We received a new data chart with the GAT-300 running at lower fan speed, -330rpm here are the temp results:


GAT-300CU 60W: ~54.8°C (+2°C)
GAT-300CU 100W: ~74.2°C (+4°C)

It's clear that the GAT does benefit from higher airflow, especially at higher heat output, but even with fanspeed below that of the Zalman VF900, the load temperatures remain considerably lower!

Attached Thumbnails

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jmke

^Update with the load test results, running at lower fan speed!

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