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TTIC will start 2008 with new VGA Cooler
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Old 24th December 2007, 10:31   #1
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Icon17 TTIC will start 2008 with new VGA Cooler


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 50C 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

Quote:
To calculate what to expect for other CPUs, for every watt the CPU radiates, the heatsink will cool the core by the (C/W x watts) plus ambient temp. For example, at a fan inlet temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that the CPU temp will be 50 x 0.25 = 12.5 C over ambient temp, or 37.5 C.
For the DATA presented above; Taking 60W for 8600 range, 100W for 8800 range, 25C room temp:
GAT-300CU: (60 x 0.465) + 25 = 52.9C
ZalmanCU: (60 x 0.558) + 25 = 58.5C

GAT-300CU: (100 x 0.451) + 25 = 70.1C
ZalmanCU: (100 x 0.751) + 25 = 100.1C
Hopefully at the start of the New Year, we'll be able to verify these quite promising test results

================================================== ==============================================
UPDATE!
================================================== ==============================================

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


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

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!
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Last edited by jmke : 27th December 2007 at 11:40.
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Old 27th December 2007, 11:40   #2
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^Update with the load test results, running at lower fan speed!
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