|NVIDIA GeForce GTX 570 Video Card Performance|
|Reviews - Featured Reviews: Video Cards|
|Written by Olin Coles|
|Tuesday, 07 December 2010|
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GeForce GTX 570 Temperatures
Benchmark tests are always nice, so long as you care about comparing one product to another. But when you're an overclocker, gamer, or merely a PC hardware enthusiast who likes to tweak things on occasion, there's no substitute for good information. Benchmark Reviews has a very popular guide written on Overclocking Video Cards, which gives detailed instruction on how to tweak a graphics cards for better performance. Of course, not every video card has overclocking head room. Some products run so hot that they can't suffer any higher temperatures than they already do. This is why we measure the operating temperature of the video card products we test.
To begin my testing, I use GPU-Z to measure the temperature at idle as reported by the GPU. Next I use FurMark's "Torture Test" to generate maximum thermal load and record GPU temperatures at high-power 3D mode. The ambient room temperature remained at a stable 20°C throughout testing. FurMark does two things extremely well: drive the thermal output of any graphics processor much higher than any video games realistically could, and it does so with consistency every time. Furmark works great for testing the stability of a GPU as the temperature rises to the highest possible output. The temperatures discussed below are absolute maximum values, and not representative of real-world temperatures while gaming:
Even though the GeForce GTX 580 uses all 512 GPU cores compared to 480 in the GTX 570, the temperatures actually favor the more powerful product. While the core count favors the GTX 580 with a 6% difference, the thermal difference between these video cards went in the opposite direction under load resulting in a 15% temperature increase for the GTX 570. After several re-tests, I confirmed the accuracy of these surprising results. Despite these interesting results, GTX 570 temperatures actually match up to those we produced with the late-production ASUS GeForce GTX 480 video card.
The GeForce GTX 570 matched idle temperatures with the GTX 580, but once the GPU was stressed to 100% the differences came to the surface. The GeForce GTX 570 produced 82°C under full load (measured at 20°C), which is 12°C more than the GTX 580 and equal to the refined GTX 480 (which originally produced 53°C at idle and 93°C under load). This raises the question of differences in the thermal cooling solution between products; a difference that doesn't exist. The only other explanation would be fan speeds, which idle at 40% power for both cards but raise at a different slope between them. As a direct result of NVIDIA's new hardware power monitoring circuitry, idle temperatures are kept to their lowest level in many years. Even the loaded temperatures are noteworthy compared to previous products. At first I suspected GPU load throttling, but there's no evidence of this on the GPU-Z histogram when we re-tested the GTX 580.