However I think VRAM or the Voltage Regulators, could also be at fault because they don't actually clock down RAM frequency at idle, and VRs have to work harder to produce low voltage, while receiving no cooling at all, especially since the card is stuck in this dead air bottom corner of the case.įull disclosure, although I picked the first thing off image search for the OP, I actually have the Strix 750 Ti. It's a well known fact that passive cooling needs high temperature delta to get convection going, in this case it's a difference about Δ20☌. This is actually a kind of smart choice, because with fans off the temps will slowly creep into the 4O's just with a browser and basically idle use.
With the "0dB" mode the fans are pre-set to not start until 50☌ is reached. My card will Idle at about 8 W, according to Tom's hardware, this heat results in a temperature below 30☌ with the fans spinning. I've also had soft crashes that saw the screen black out shortly but then come back with the Windows desktop looking different somehow. CPU crashes give you the new Windows with the sideways ":-(" bluesreen, the other producing just a visual mess of red an green lines, squares etc. Only later I kind of faced or rather wised up to the fact that CPU crashes and GPU crashes look very different. Personally I was also very incredulous and blamed the crashes on my CPU overclock, which I had meticulously tested and documented.
This topic is supposed to give myself the motivation to further investigate the issue.
Isn't the whole point of it that it should turn the fans on when it needs to cool it? It sounds like your system was just malfunctioning, otherwise they'd have cards blown up all around the world. TLDR: Don't buy cards that advertise "zero noise" mode, now available from various brands. I really should do some more testing, maybe you can recommend a lightweight stress test that would get this thing cooking. Now, I have to auto run ASUS's stupid "GPU Tweak II" so it will turn off this terrible nonsense on every startup so the fans keep spinning, to prevent my card from getting too hot, aging it prematurely and also crashing randomly. Even still, all passive cooling is bad and really hot. Accidentally stumbling upon this by touching the protruding heapipe, which was piping hot! Heat pipes are an amazing technology, but I suspect that, they are not suited for passive cooling! They actually need one end of the pipe to be cool to work properly. In my case this caused my PC to crash randomly for years, before I discovered the culprit. What sounds like a good Idea in theory, is a complete shit-show in practice. When the GPU is idle it would clock down and under-volt itself like all GPUs, also switching off the cooling fans. ASUS has started this abominable Trend with their STRIX branded graphics cards, calling it the " 0dB" mode.
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