Additional Improvement for a Silent Modified Jasminer X4 1U ASIC Miner

Mining

Plainly we type of missed one thing necessary within the silent modification of the Jasminer X4 1U miners described right here and that’s to have in mind the one different factor that generates warmth contained in the miner. That’s the controller chip on the miner’s management board that usually doesn’t include a cooling heatsink on high of it. The Xilinx Zynq-7000 SoC (XA7Z020) used shouldn’t be a conventional FPGA like we type of assumed with out correctly checking the specs of the chip. It’s in reality a dual-core ARM Cortex-A9 Software Processor Unit (APU), and as you realize having a processor, even a decrease energy ARM one can get issues sizzling when working and underneath load 24/7…

So, what apparently occurred through the evening, with nobody current across the miner is the management board of the Jasminer X4 1U that we had been utilizing for testing simply dying on us for no obvious motive. The one factor that involves thoughts is the chip overheating for some motive and dying on us, though the conventional working temperature doesn’t appear to recommend any overheating points. Usually, when the miner is in its unique bundle contained in the 1U field with all of the high-rpm server followers the within ambient temperature might be decrease and thus no further cooling has been offered for the controller board’s processor, however whenever you open it up and modify it to make use of silent followers issues may turn into totally different. Fortunately we’ve had a spare controller board already ordered simply in case one thing like that occurred, so we changed it instantly and the miner continued to perform like earlier than.

We’ve measure the working temperature of the Zynq APU on the brand new controller board and it’s nowhere close to harmful ranges for such chips, at round 52 levels Celsius (125.6 F) it must be just about protected even with out additional cooling, proper. Properly, it may be now, but when what for some motive this temp rises for some time, in all probability that’s what occurred for some motive with the APU getting greater load for an extended time period leading to overheating (thouhg it is also some completely unreleated motive as effectively, can’t make certain). Simply to be on the protected facet, it’s a good suggestion so as to add a small reminiscence chip cooler on high of the Zynq APU as a way to hold the working temperature decrease always. Particularly when you plan on utilizing a silent modified miner and the the usual configuration the place the difficulty might be much less susceptible to seem.

Additionally, a very good recommendation may be to order a spare controller board simply in case, particularly in case you are operating greater than only a single Jasminer X4 1U ASIC miner. That is to keep away from potential downtime in case one thing occurs with the controller board in your miner. Do notice you can join a number of hashing boards with Jasminer X4 ASICs to a single management board (our each had 3 connectors for hash board), although we’ve seen board with extra connectors as effectively. We’ve tried and the management board detects and features with a hashing board related to all the three out there ports. So, as a brief resolution you may use a single management board to drive a number of hashboards of a number of miners in case you’ve got greater than juts one and also you get a useless controller board.