![]() ![]() SpeedFan seems to be the only thing that can control case fans and read the temperature of a GPU, which seems really weird to me. well my GPU will sky rocket in temperature. My GPU gets hotter than my CPU, so if I'm not playing something CPU intensive while my case fans are controlled by my CPU temps. I don't understand how SpeedFan has this functionality and nothing else does, I can't think of any reason AI Suite or my BIOS can't detect my GPU temperature and let my case fans be controlled by it. Yet you don't need to buy anything special to control your fans with CPU temps, which are just as easily accessed by a program like HWinfo. It was hard to find this information, mostly everybody says to buy a dedicated fan controller or a thermal probe to attach to the GPU. It doesn't make sense when I can open GPU-Z or HWinfo and many other things that report my GPU temps, yet somehow all these fan control programs can't access that data and use it. SpeedFan isn't the easiest thing to use, it has some stupid default settings and isn't self explanatory at all, but it appears to be the only thing on the planet with this capability.ĪI Suite, BIOS, everything else that controls fans don't use GPU temps, but CPU, Mobo, PCH etc temps. After all, the video card is not designed for any and all standard case fans, and for adding extra fans to its outputs.Just now figured out this is possible with SpeedFan, I did research this forever ago and gave up. ![]() Then you also need to know the limit of the power the video card can send to its fans. ![]() Before doing that you would need to know whether the video card's fan signals are really the same as a standard case fan uses. That way the fan would be powered and controlled by the video card, not by the mobo. My last possibility would require a bunch more custom work and some preliminary info search first, and might void the video card warranty! Since the card has its own cooling fan and its own fan speed control system based on the card's own temp sensor, you MIGHT be able to tap into the fan power (and speed) control system on the CARD and feed those signals out also to an external standard case fan. This would "over-cool" the mobo, but would increase air flow in the video card area. You could just tell the header that controls fan(s) that blow toward the video card to run faster than the normal pre-defined curve would do. Maybe that is how you can change your card's settings to run its fan faster at high temperatures.Īnother possibility is to use that common feature of the mobo SYS_FAN headers that allows you to specify your own custom fan speed control curve, even though it is still based on the temperature sensor on the mobo, and NOT on the video card temp. As I said, many video card makers' card management tools include a way to observe what their own on-card cooling fan control system is doing AND allow you to customize that, just as you can create custom fan cooling curves for a CASE fan controlled by the mobo header. However, that does offer another route for you to investigate. I have to presume that they can only work on cards that the software maker has all the secret non-standard suff for and that you must customize the software a bit when you install it. There are some third-party fan control software tools that include the ability to control the video card fan system. So obviously they have a way to make their card's temp sensor info available through the PCIe bus, but there's still so standard way that a mobo maker could rely on. Many video cards come with management software that somehow can display the cards' temperature, and ALSO allows YOU to set up your own version of how the card's cooling fan responds to temperature changes. Other video card makers have a small part of this done, but not so you could use it. So, on some of their mobos IF you also install one of that same maker's video cards, this trick can be done. There is at least one mobo maker who also makes video cards, and they have created their own "brand-specific" non-standard way to do this. So no mobo maker can be sure that any video card plugged into its slots will give it such info to use for fan control. The root of this problem is that there never has been any industry-standard way for an added video card (in a PCIe slot, typically) to send out to the mobo the video card temperature sensor signal. ![]()
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