Depends on weight of cooling solution for the particular card model.
What you can do is to flip your pc to the side, so graphics card stands vertically.
Or if your pc case supports it, you could mount graphics card vertically with pcie extension cable.
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Guys I was removing my RTX 3070 to clean it and I accidentally broke the x4 pcie retention lock, the x16 where the RTX 3070 is installed is fine, can I fix this in India or not? Help me, what will happen if I install the GPU without the locking clip? Will it fall off? I don't use the x4 slot I only use the x16 slot where the 3070 is installed!
The PCIEx16 motherboard slot has a superior connection to the CPU and DRAM, enhancing performance and stability. It should also supply 66 watts of 12 V power and about 9 via 3,3 V. I don't know how much is used by the card, but 20x0 models appear to break down quite regularly.
It will most likely use some of the power for the GPU core. (I'm guessing, don't know if this information is available). And it will very likely be used for some extra charge or stability when VRAM or core voltage from auxiliary adapters don,'t cut it.
High RAM clocks will drain most power, and these can result in the core throttling down to remain stable. Starting to play around with power and voltage settings after this, would be the most harmful.