Recent content by cyrix

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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    Well I have managed to get my hands on a pws-862a-1r. The pcb is about 10mm shorter than the 804. The input fuse and some of the emi capacitors are on a little pcb hanging off the power connector. It is also using at least one GaN fet. This is a comparison between the 804 and 862. Ignore that...
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    Log *complete* S4MAX'23 / World's smallest 4090 build: Brickless 5l S4Mini, 4090FE, 7950X3D, 800W, water cooled

    If you're talking about drilling through the pcb on the power supply on the output side, of course it isn't going to work; the top is ground and the bottom is +12v. Drilling through and putting a wire through the hole would cause a direct short circuit to ground for the main output. There also...
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    There appears to be a new Supermicro psu out. Same size as the pws-804p-1r and similar name plate ratings. It is the pws-862a-1r. It gets an efficiency bump to titanium from platinum. Might look into using one if this thing gets revived. https://store.supermicro.com/us_en/800w-1u-pws-862a-1r.html
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    I am unsure why it was so loud however, as far as I can tell, it wasn't a one off since I've tried 2 power supplies and both were the same. Truth be told, every single part of this computer had terrible coil whine and was changed multiple times. Went through 3 Asus B650e-i before settling on a...
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    I didn't know that these were 60mm wide. That's a bit of a problem, at least for me, since the super micro I was previously using was already too wide at 54.5mm wide. I might use this one though to see what else there is out there.
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    You wouldn't happen to have one of those on hand would you? If I were to use one, I would probably make a little pcb that plugs into the end like my last one. For that I would need to know what connectors fit onto that end. I wouldn't leave it on all the time; the last psu I made would pass the...
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    I had a look at the dell supply and it seems promising however, there is little data about it out there. I also found that there is a 1400 watt variant that is generally cheaper on eBay. From the little I could find out about it, it is slightly less efficient, at least according to dell however...
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    I did attempt to trace out what component in particular was making the noise in the previous psu and found that it was a combination of the main transformer and a choke on the output. I attempted to replace the choke with one with a design that I thought would make less noise and increased the...
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    I had a fairly quick look around at Meanwell's stuff and didn't see anything that would be close to the kind of size that I need. For reference, the cut down pws 804p that I used is 54 x 40 x 180mm including the protrusion for the gold finger connector on the end. Both Petricor and myself came...
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    No I don't mind, thanks. Unfortunately the HDplex 500 is both too big mechanically and too small electrically. It is about an inch longer than the modified pws 804p and is taller than the internal height by some amount. The 250 would fit but they don't provide anywhere near the power needed.
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    Log Cooj sparrow mq5 with many things that ultimately didn't work out

    After many months of work, unfortunately I must abandon my project of packing everything I could into a Cooj sparrow mq5. The power supply makes a ridiculous amount of coil whine when the GPU is active and I cannot solve it. Petricor, I don't know if yours makes anywhere near the racket I'm...
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    Log *complete* S4MAX'23 / World's smallest 4090 build: Brickless 5l S4Mini, 4090FE, 7950X3D, 800W, water cooled

    I was finally able to measure the height of the connector off the end of my power supply It is approximately 13.5 mm past the end of the metal casing of the power supply if you include the cables and zip tie. Approximately 9 mm for just the pcb and the pins that stick through from the connector...
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    Log *complete* S4MAX'23 / World's smallest 4090 build: Brickless 5l S4Mini, 4090FE, 7950X3D, 800W, water cooled

    I don't normally go for the plastic sleeving on the cables; I tend to either prefer none or cloth, however those look really nice. I also think those gpu power wires look nicer individually run rather than together in one sleeve. As for performance, it looks pretty good as is, however I think...
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    Log *complete* S4MAX'23 / World's smallest 4090 build: Brickless 5l S4Mini, 4090FE, 7950X3D, 800W, water cooled

    I can't measure it right now but from what I can guess, it is about 10mm past the end of the psu pcb. With a minor redesign, it could probably be made to accept all the wires on the psu side of the connector. The 12 volt 12ga wire for the gpu connector is partially behind the psu side connector...
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    Log *complete* S4MAX'23 / World's smallest 4090 build: Brickless 5l S4Mini, 4090FE, 7950X3D, 800W, water cooled

    This is what I did It adds a significant amount of extra length onto the end of the power supply so might not work in every circumstance.