King of Cable Management
- Apr 28, 2017
Just wanted to chip in with my 12V experience in case it helps someone else. A few months ago, I upgraded my system (R5 1600, GTX 970, EPP-400-12), to a 3060ti. I started having several GPU issues with game and Windows crashes, most of which had some version of "GPU Not There Anymore" as the error.
I remembered people talking about instantaneous current draw on 30 series GPUs when they came out, so I figured the EPP-400 just didn't have enough output capacitance to keep it going during spikes. To fix this, I wedged a 1000uF capacitor in the EPP-400's output terminals. And it actually solved it! No more crashes.
In an effort to reduce jank, I designed a circuit board that has a bunch of capacitors on it, and two XT30s for 12V outputs. I'm aware that XT30s are only rated for 15A (180W at 12V) continuous, but my 3060ti only pulls 200W, and I'm willing to risk it for how small this solution is. It screws directly onto the EPP-400's terminals using the included screws, so mounting is pretty easy and it helps with wiring anyways.
The details and source files are available at this Github repo, so if you think this'll help you, give it a try!
Very nice. I'm surprised that such a small amount of capacitance did the trick. Maybe since you were only running a ~200w card, it doesn't take very much capacitance increase to have a big positive effect. Would need tools to really be able to measure what is going on. I tried a similar idea using 12x 470uf caps for 5,640uf on a y-splitter in parallel with the GPU 8-pin connector. And my project was copying another one which used like 16,000uf of caps.