Zalman VF1000 LED VGA Cooler Review
Our Tests
Contents
We ran some simple tests to check the performance of the Zalman VF1000 LED, measuring the GPU core temperature with the aid of the SpeedFan software, and sound pressure level (SPL) with a digital noise meter set 4" (10 cm) from the video card, with the GPU at full load running the folding@Home GPU client. For this measurement, we turned off the CPU cooler, so its noise wouldn’t interfere. Please keep in mind that sound pressure level measurement is just for comparative purposes, because a precise measurement would have to be done in an acoustically insulated environment, which we don’t have.
We compared the results from the VF1000 LED at minimum and maximum speeds with the VGA stock cooler. You can check the results in the table below.
| Product | Noise | Room Temp. | Core Temp. | Temp. Diff. | Speed |
| Stock Cooler | 61 dBA | 16 °C | 73 °C | 57 | – |
| VF1000 LED (min.) | 44 dBA | 16 °C | 74 °C | 58 | 1400 rpm |
| VF1000 LED (max.) | 51 dBA | 16 °C | 61 °C | 45 | 2600 rpm |
In the graph below, you can compare the temperature differences between the GPU core and the room. Remember that, the lower the value, the better performance is.
As you can see, the VF1000 LED, when at minimum speed, performed similarly to the VGA stock cooler, but with a far lower noise level (actually, practically inaudible). At high speed, it lowered GPU temperature by about 12 °C, while still being a lot quieter than the stock cooler.