Timothy Kim60 said:Yeah, but that's just the GPU—specifically the GPU-chip—not the entire graphics card. That's how the data comes through if you're looking at monitoring software.
These GPUs pull about 200W during actual gaming, though they jump up to the 220-250W range during stress tests, depending on which model you're running. I highly doubt you can cut power consumption in half just by undervolting—you guys are only looking at the GPU portion.
The GPU alone can pull 75W, then you’ve got another 25W going to the memory and everything else. I'm talking about mining here, which is pretty intense, though you can always go the underclocking route. Personally, my card runs dead silent and stable at 0.925V and 1150Mhz. You can hit 1200Mhz if you bump it to 0.95V—which is close to the base clock of around 1250Mhz—but obviously, that depends on the specific card you're holding.
I have no idea how this works in those programs wanderingbison9 needs. Does performance take a massive hit when you drop the clock speed, or is it more memory-focused like mining?
Look, that GPU-chip power draw figure isn't exactly pinpoint accurate on its own. But generally speaking, you can just look at the actual measurements. If you've got a rig with six cards and a Pentium pulling 700W straight from the wall, it’s not exactly rocket science to figure out what each individual card is sucking up.
wanderingbison9 said:I measured exactly how many watts the whole rig pulls from the wall—running both the CPU and GPU under full stress simultaneously—and it hit between 380 and 400 W. When I ran Unigine Heaven, it pulled 300 W, but that's because the CPU isn't being pushed to its absolute limit there.
The absolute max undervolt I managed to pull off without the driver crashing was from 1.150 down to 1.075 V.
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What clock speeds? Stock?
If you want to cut down on power consumption, undervolting helps a ton compared to just underclocking.
Also, have you tried switching the settings from "Graphics" to "Compute"? It makes a massive difference for mining. Not sure if that applies to whatever you're working on, though.