Yeah DO NOT rent from there. I've rented twice: once for 18 hours at 620 MH/s and once for 24 hours at 420 MH/s. I was never given any of the Ethereum that was mined and never refunded any bitcoin for renting the miners. I have contacted the admin 3 or 4 times and never get a reply. Save your BTC and rent somewhere else. Rigs.Online is a scam for sure. Really can't believe the link is allowed on the front page of the pool.

You can ROI on an ethereum rig in 3.5 months right now if you don't go out and buy all new parts. My rig just cost me $900 and will ROI in 110 days. Even less if the price stays like it is now(it will correct itself soon i'm sure). I'm hashing at around 80 MH/s at 950 Watts thats with an underclocked 7990 and two 7950s on an old ass AMD athlon 2 processor+ motherboard I had left over.

Building a second rig almost the same and will have roughly 6 months of profit. Even if PoS comes when they say it will I will have already made $750 in profit per rig. And I can sell those cards on ebay to make back more.

Mining Ethereum may only last 10 months but it's still very much worth it and may provide you the extra cash you need to buy the next gen 16nm ASICs or something else...

Ah didn't know it was on nicehash. I remember reading this in their FAQ when renting some hashrate from them a while back. Too bad, I was hoping there was something interesting happening and there was something more to the "sweet spot" found on that frequency ;(

Interesting that your best hashrate occurs at your lowest max frequency. Any explanation? Voltages seem relatively close, varies only ~100 mV.

I keep hearing this as well, but i don't think I've seen enough data to be sure about this yet, or the reason why the 380s aren't affected. Is it the difference in memory types or what? Also what kind of difference if any does the trashing have on the 380 vs 380X?

Waiting for one more wave down and buying at the bottom at 0.00538 BTC/ETH lets see how this plays out. Sold 165.0 ETH at .00676 yesterday so already pretty far up in the short game! Not a lot of doe but its been a fun pump!

I'll be the guy in the crater with my buy order 

I've used https://www.myetherwallet.com/ and bittrex as my online wallets. the only thing with myetherwallet is you need to save your Encryption key and the password for it for every wallet you create. Don't lose them or you'll have to contact support and see if they can help you out.

Bittrex might serve you better as on online wallet since it is an exchange as well in case you want to buy/sell and not just used as a deposit/payment wallet. Hope this helps.

Depends on how long you've been running and what kind of quality your PSU is. Depends on what you are mining but things like Ethereum are heavily Memory dependant and not core dependent. You shouldn't lose any hashrate by lowering your core clocks and keeping your mem clocks the same or a little higher. may save you on power usage and lifespan on the card as well.

As always keep your cards COOL. Big fans are a great to help this in open air rigs.

Big selloff just hit last hour. Did we pop or did we just blow off the  stage 1 booster rockets on the way to the moon?

Not sure I will want to buy into one of these until some of the competitors release their new line of products. would like to see what kind of efficiency Bitmain can push out with their S8/S9 or whatever their going to call it. Any news on Avalon producing something in the 16nm realm? If the price is sub $1800 however is may be worth it to get it early and just get to mining if its the first to hit the market.

lol he took off right after my 46th transaction so i didn't lose really anything, but i find it funny he takes off as soon as the exchange price hits a high for the last 3 or 4 days.

Yeah I'm hoping that underclocking them a tad will help in the not burning department  But if they go I will just swap to full 7950s

I'm building a GPU rig the next week or so using an old AM1 socket mobo for a few weeks but will most likely be picking up a refurb'd MSI g45 from newegg to replace it. I've had that board in two different machines and never had issues. I'll be putting a Corsair RM1000 to power 2 7990's. Probably the lowest PSU wattage you wanna go if you run two 7990's I may try to get two more and power them with a 1000w HP server PSU that people have been using here to power their bitcoin miners. Look up dogie's guides he has it listed there and its pretty cheap i think $45 on amazon. So hopefully won't have any issues mining on the MSI G45 with 4 sapphire 7990's. Essentially 200 MH/s of mining power on 2000w without being full load. If you're looking for the most efficient card for your money it's gong to be the 7990. .

https://docs.google.com/spreadsheets/d/1s5SaThZ5eOSAiVMpmuIjz-_YjIlcxttAzKuWKAbczds/edit#gid=0
Look here for a spread sheet the ethereum guys have put together...That's what i'll be mining.

Probably one of the best/easiest clalculators out there. I have a few suggestions though:

1) Maybe add the approximate halving date in there around mid July (very important for the last half of the year in mining).

2) Include hardware costs into the calculations.

Also, do you happen to work in the Hydro generation field? I may work for a company who's contracted with you in the past (judging from your BCHydro username).

Cheers.

Got the refund thanks man. I'll try again today.

Admin can you check this for me please?

Admin its been around 18 hours now and no payment to my account can you please check payment

34LweGjML2EfLmVkW1Y5DZyrwWS16mhfb4  of 0.05003171 BTC

Refund if possible, let me know if we can try again.

You guys will have my confidence as soon as I see something post and i'll make sure to show it here. Hope you guys get the kinks worked out. I'll be patient for the next day or so. Will keep the rest of you posted. As of now its been 7 hours and nothing posted to my wallet.

I deposited about 4 hours ago and haven't received anything back yet. They say they're having issues due to blockchain. If I don't see something by tomorrow I'm considering scam. Doubling an investment is kinda too good to be true. Seems like a textbook ponzi but we'll see.