Wouldn't just using the Coinbase VISA card accomplish the same thing? Maybe fees higher, and you'd need a physical card, but otherwise isn't it essentially the same?

That's interesting. At least on my cards (AMD 50th anniversary & AsRock cards) around or above 83 C (as reported by MSI Afterburner) I start seeing diminished Ethereum hashrates. I believe this is a core limited card, so any core throttling will immediately impact hash rates.

I have a 50th anniversay R7 hashing occasionally here, and it's very reliable around 90.7 Mh/s. MSI Afterburner says 74 C, Fan speed set at 64 %, Core 1801 MHz @ 980 mV, Memory 1040 MHz, Power limit -10%

https://eth.nanopool.org/account/0xa63ffc523e284bfb4a09b46ed2336afe824c57eb

78 C with box fans blowing on them in an open air rig (exactly the kind BBT uses). Just undervolt them and make sure they have adequate (external) cooling.

P.s. I think you misspelled Mh/s.
P.s. 2. It's normal for these cards to run hot. They'll throttle down once you reach high enough temps. I'm not sure but I think 83+ C will start throttling.
P.s. 3. If the card is inside a computer case, it's possible you may never be able to run it at it's full potential. You'll need extra cooling.

Good luck!

I once thought of using some of those enclosed IKEA clothes racks. They are sold on Ikea (I couldn't find it on their website) for like $25 or something. The idea was to position the rack near a window , cut open holes at the back, near the bottom for intake, and one for hot exhaust at the top. Then place rigs inside it. That way it would be an enclosed system, while still using outside air for cooling. It also wouldn't look insanely ugly.

https://sg.carousell.com/p/ikea-clothes-hanger-rack-207248788/

Never got into executing this plan though. For now I have my miners in the patio with box fans blowing at them.

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Very Breaking Badesque (my retinas will never forget the "Methlab-RV" outside scenes with Mr. White)

I believe that is a common misconception. If you've secured a low enough electricity pricing with your current power company, you can still make better profits (after the power bill) while happily burning away electricity. The whole point is about finding a balance of revenue vs. efficiency vs. electricity rates. With my rates I have no problem running my 7's all at or above 90MH/s in an open air rig.

The few R7's I own are currently on Dagger Hashimoto, each making around $2.26 on ETH (0.00693 ETH) per day. About 10 cents less on ETC. Power is $0.62, so each one is netting $1.64 a day on ETH. ROI at 414 days. Not exactly great, but it's good enough for me to encourage a hobby. Most of my ETH I exchange to BTC, and some to other coins and patiently wait for a payday to happen.. which, judging by how markets are behaving, may be sooner than I expected.

If fan control doesn't work with Global Wattman or Afterburner while the miner is not running, then your problems lie elsewhere. Did you try latest drivers?

I remember Bitcoin being mentioned several times on the radio back when BTC was around 12K to 18K. Usually in news, sometimes in talkshows. Around North Texas.

Depends what algo you run. Ethereum is 215W for 82 MH/s, 245W for 89 MH/s or 300W for stock settings.

I'm already getting about 90MH/s with nothing more than AMD Afterburner tweaks. 

I could be woefully wrong about this, but I thought Radeon VII was core limited not memory limited. If this is the case, optimized memory timings won't help.

This is my own personal understanding on the subject.

I've been getting regular payouts from Nicehash from their repayment program as soon as I started mining again. If you're not mining, the repayments will not be regular; instead they will accumulate in your mining account until the preset limit is reached, at which point they pay it out to the wallets. The minimum payout limit is dictated by the network fees

Please use Google for general questions.

https://www.google.com/search?q=turn+off+windows+test+mode

Get one miner for 6 gig cards and one miner for 3 gig cards. Not a good idea to mix and match cards and algorithms too much.

Yeah what I hear over the forum (and popular YT commenters, such as Bitsbetrippin'), Corsair no longer makes quality power supplies that last. People have been moving to Thermaltake Toughpower and EVGA Supernova. I've personally have had no issues with EVGA or Thermaltake.

1. Unpack the miner in C:\MINER\
2. Edit the .bat file to include the parameters you need.
3. Open the start menu.
4. Type in "cmd" without quotes.
5. Right click "Command Prompt" and select "Run as administrator"
6. Type "CD\" (that is CD with a backslash)
7. Type "CD MINER".
8. Type in the name of the .bat file you edited in section 2. For example, "start.bat"

IF this does not work, do the following:
1. Unpack the miner in C:\MINER\
2. Edit the .bat file to include the parameters you need.
3. Click on the bat file with the right mouse button. Choose Run as Administrator.

If this does not work, open up Start menu, type in "UAC" and turn user account control off. Then try the previous procedures again.

I second this. Most US household plugs are rated for 15 amps. That's 110V * 15A = 1650W. My extension cords get scary warm at already 1250W even without tripping the fuses... So please take care, measure your consumption if you don't know it, and stay safe.

You can go to http://www.whattomine.com/ to check current profitability.

What are you talking about  Claymore did add it to his latest binary, it's accessed with the parameter -rxboost

Some generic brand. I don't think it becomes that hot, otherwise the plastic housing around the red light at the corner would melt too. Electrical tape is usually rated for higher temperature tolerance.  But I don't know if it will leave sticky stains after removed.