Mining Decentralization
 We value decentralization and our GPU miners who are an integral part of the community. Changing algorithms is an extremely complex activity and we are not going to rush into a decision that may compromise the safety or integrity of the Zen network. It’s important that we take time to conduct research and evaluate options to properly formulate a plan.
https://blog.zencash.com/mining-decentralization/ Thanks for sharing! I'm impressed. It's beginning to look like the developers here at ZEN are more supportive of GPU miners than ZCash. I just might have to point my rigs at ZEN instead. Honestly, I'm genuinely impressed...  |
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Not sure if any of you saw one of my builds for 6 x EVGA 1080 Ti KINGPIN's. I have 5 x EVGA 1080 Ti KINGPIN 6 card rigs and 4 x EVGA 1080 Ti FTW3 6 card rigs. I absolutely love these EVGA 1080 Ti KINGPIN's. The copper heat sinks on these baby's are absolutely gorgeous! Here are the specs for the KINGPIN's: https://www.evga.com/articles/01116/evga-geforce-gtx-1080-ti-kingpin/More photos of the build for this rig and four others exactly like it WITHOUT the copper paint: https://imgur.com/a/v0klbThe particular 1080 Ti KINGPIN rig I'm showing here is a 7 card rig.  Here it is without the PSU and Motherboard shortly after painting it with copper spray paint to match the copper heat sinks:  |
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This post is to simply show my 30 Amp circuits are currently TEMPORARY. The inspector will be here tomorrow morning to inspect for the last time, hopefully. THEN, I can finally make these circuits permanent. By the way, I will be taking out those temporary 30 Amp circuits before the inspector arrives in the morning. The only reason they are hooked up now is to avoid losing too much mining revenue. If I installed these circuits into the new electrical panels, the inspector will also want to see the room(s) they were installed to inspect the outlets as well. I don't want an inspector in my mining room with the current shape/predicament it's in. No?  |
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Another View:  |
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Another View:  |
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In this photo you are seeing the back side of these racks that do NOT have the fan frames built and mounted like on the one in the back. That's what I have to tackle next are those fan frames with 12 fans in each frame for each of those two racks.  |
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That is a pretty awesome project you worked on with your father. Nice.
I can tell he has enjoyed it. I too have looked forward to working with him on his crypto currency journey. |
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Currently what I have at my place:
12 x EVGA NVIDIA 1070 Ti FTW2
52 x EVGA NVIDIA 1080 Ti FTW3
12 x XFX R9 390
36 x Sapphire R9 Fury
24 x R9 380
89 x RX 480
7 x RX 580
TOTAL OF 232 x GPU's at my place.
Those RX 480s are pretty much the dream GPUs. How long have you been mining for? Congratulations you probably don't have to work a regular job for the rest of your life by now eh. I would also love to know why you are still mining with power hungry R9 Furys. Is electricity so cheap at your location that they still give you a decent profit (for all the risk vs resale value)? Yes, the R9 Fury's are VERY power hungry. The best price to power ratio with Fury's and a BIOS Mod is ZEC at approximately 420 Sol's each and 130 Watts. Currently mining ETH at 32 MH/s each card. Not sure how many watts. I'm sure I could make them hash faster. Took them back to factory BIOS with ETH. Thinking about using AMD software to make them more power efficient. I'm holding on to them as long as they keep making me money. I bought most all of my 480's the first couple of months they came out. They've ROI'ed at least 3 times over. The price I paid for those 480 8GB's was literally half of what most people paid for their 580 8GB's. I paid $145 each for the R9 380 4GB's back in May and June, 2016. They ROI-ed 3 times over. I had 78 x R9 380's at one time. Along with a lot of Fury's and R9 390's. I've had the NVIDIA's since July and August for some and the remainder in December. I paid between $600 and $820 for most every EVGA 1080 Ti I have. They were going for $1,200 "Used" quite easily a few months back. I haven't worked a regular job in a long time. |
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Another 77 inch wide rack is about to be setup inside here and the rigs on the 48 inch wide rack will be transferred over to it. The 48 inch can hold eight rigs. The 77 inch wide rack can hold 12 rigs at 3 rigs per shelf.
-snip-
That is a pretty sick mining room. I love the custom built mining rig cases. Seems like a good combination of wood and aluminum(?). Although some might say that all the wood is a big fire safety risk. You mind me asking what GPUs are you using? Seems like you've diversified into both AMD and NVIDIA. Thanks, appreciate it. I "hope" it will be to everyone's liking when completed. I have other things I could have done with plexiglass and LED's but that will have to wait a while. It's not a fire safety risk to me. I have several smoke alarms, fire extinguishers, I'm ready. Currently what I have at my place:12 x EVGA NVIDIA 1070 Ti FTW2 52 x EVGA NVIDIA 1080 Ti FTW3 12 x XFX R9 390 36 x Sapphire R9 Fury 24 x R9 380 89 x RX 480 7 x RX 580 TOTAL OF 232 x GPU's at my place. 2 x Sapphire R9 Fury rigs and 1 x NVIDIA 1080 Ti rig is in the office in addition to what you see in the mining room I'm remodeling.I gave my dad the following OLD rigs: 48 x R9 380's 7 x Bitmain S7's He will also be purchasing some NVIDIA's very soon. I plan on giving him my remaining R9 380's as I replace them with NVIDIA cards. |
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Still more work going on: More updates to continue every so often...   |
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All the wood is a big fire safety risk.
Pardon me, but if you know what you're doing with open air PC builds, you should have no problem. I would be more concerned with ASIC's than I would open air PC builds. But that's me... Anyway, all of this will be done properly. I will even have each rack grounded with #4 Copper ground wire to the "Bridged Ground" outside at the power meter and Main Distributing Panels. I've been mining since 2014 (The days of the Bitmain S1 and S2). I've also owned S3, S4, S5 and S7. I never did own the S9. I bought GPU's instead; after selling most of my S7's. I gave the remaining 7 x S7's to my dad. I had a total of 42 x S7's at one time and not enough power to run them all.  All of this is going to be done right in my remodel. It will be organized similar to the way my dad's was organized; only two more additional 77 inch wide racks with fan frames on the back of them like the one in the back. |
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I got two sticks of 3 inch in diameter Electrical Gray PVC pipe to act as "sleeves" for 9 x 30 Amp Circuits and 4 x 20 Amp Circuits. I'll use a smaller 1.5 inch Gray PVC pipe for comms.  |
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If I were you, I would just split the ductwork in ceiling to create another exhaust that's over your rigs instead of moving. Having the exhaust over your rigs can also help move more of the air towards your rigs.
Maybe I'm not understanding exactly what you mean ... But why would you go to all of that trouble, when I could easily move the shelving unit a few feet to position it directly under the exhaust vent in the ceiling? Did you notice the photo of the exhaust fan my dad and I installed in his ceiling inside the mining room? Did you notice how spaces were made for box fans to keep all heat inside that room separate from fresh air coming into the garage. This way, the rigs are not sucking in hot air that heat they released may have mingled with. There's no chance for the heat from rigs to co-mingle with fresh air with that design in his garage. The racks act as bracing for your wall. Simply attach some 2"x4"'s to the racks and start building... adding doors, etc... This photo below is the 30 inch 7,800 CFM Exhaust Fan in my dad's mining room. I have two of those at my place [One for intake and one for exhaust].  |
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So here is what I currently have going on ...
31 GPU's ranging from 1070ti's to 1080ti's ... Six of them are XFX Vega 56 blower cards. According to fan specs, we're doing 3100ish cfm on intake and exhaust in a room that is 1680 cubic feet. There is another window in that room that I could put another intake fan in, not sure about that yet. If I do that, I assume I'm going to need to put in another exhaust fan. All rigs other than the vega blower card rig have a box fan behind them.
I'm wondering if I should move the shelving unit a little closer to the exhaust, so the heat is sucked directly upwards, but the box fans are pushing hot air off of the cards in a forward motion. Not sure how much.
Currently the room is around 7-8 degrees above the outdoor temp. Without the exhaust fan (and with the intake and box fans), it was 15-18 degrees above the outdoor temp, so it has certainly made a big difference.
Temps here are going to be heating up, so we will see what happens. The next step in this project is venting all the way outside rather than into the attic.
If anyone has any suggestions on gable vents or roof vents that have fittings for a large diameter hose, please let me know.
Yeah, I found I had to make different rooms for best efficiency possible. A room for heat and a room for cool. You cannot allow the heat generated by the rigs to mingle with fresh cool air. Otherwise, it will heat up the cool fresh air before it is sucked into the fan which blows warmer air onto the rigs. The rig gets warmer; the air coming off the rig gets warmer, the room air gets warmer; the warmer room air blows on warmer rigs to release even warmer air in a big circle like a convection oven recirculating heat. At least this is what I determined once I got over 100 cards. I have over 200 cards now. No idea on who to contact for the roof vents. Good luck. My dad had to rig stuff up his own. |
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Another sad view of rigs sitting idol.   |
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Another 77 inch wide rack is about to be setup inside here and the rigs on the 48 inch wide rack will be transferred over to it. The 48 inch can hold eight rigs. The 77 inch wide rack can hold 12 rigs at 3 rigs per shelf.  |
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This one rack will be left alone because it is already placed where it will remain and already has a 12 box fan frame built and attached on the back of it:   |
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As far as the mining room goes, everything is pretty much disconnected and getting ready for remodel to obtain better cooling for mining during the summer. I will send a string of one image after another with a few comments.  |
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