If you run them at "efficient" settings it's cool enough.
My "mining room" was getting into that range at times last summer, and I didn't even have most of the "convert to riser rigs" work started at that point.

And if even ONE big folder starts hitting up your coin, your profitability will drop to near nothing.

Less than 4 million PPD is not a big folder, I was pulling more like 20 million the last month I folded, and I've added quite a few Nvidia GPUs since then.
Last time I checked the top folder was pulling over 70 million PPD.

I count it as poor design that you force folks to fold on your team - that destroys any possibility of merge folding with CureCoin (conflicting team requirements) or FoldingCoin (conflicting coin address requirements).

Blower cards tend to be LOUDER, as they usually have to run higher fan settings to stay cool.

Cards with good cooling, set for efficient mining, in a riser rig with plenty of space between the cards, will usually result in a very quiet rig.
Use a standard box-type fan instead of small computer fans also tends to help keep it quiet, as you can probably leave the fan set on "low" and still get more than enough airflow.


Due to ram shortages and pricing on RAM, 1080 ti cards are "worth" more like $800 now - and that's not looking likely to change for quite a while.


The additional heat in a small room like a bedroom might be an issue though, especially if your rig is fairly high powered.

Hint - the "big boys" were here long before YOU started mining.
If you know HOW to make your rigs efficient, and are located in an area with low-enough cost electric, you CAN compete with them - lower overhead for starters - even as a fairly small operation.

If you're a SMALL scale part-time miner, you don't HAVE overhead, or barely have any.

Buying parts to build GPU rigs with is not "highly speculative", as there will be SOME remaining value to the parts even if profitabilty collapses.
Buying COIN with a credit card would be "highly speculative".

Because it's dollars they would not have - there is no point to NOT mining with gear if you already have it.

I suspect even most small-scale miners pull in a lot more than "a couple dollars a day" anyway - that's SINGLE GPU territory in many cases.

Also, why do you ASSUME they don't have a "regular job"?


And to be blunt about it, GPU mining right now is a LOT more profitable on a $/watt basis and in some cases on a $ per dollar INVESTED basis than most ASIC return, with a lot lower risk.


38 cards is what I'd call "medium scale home miner" or "very small scale pro", depending on the specific cards. 18 1080 ti > 38 RX 460....

Unless you like replacing fans, avoid Gigabyte other than the Aorus models.

Also, the Ampere rumor appears to be from a single source that has been repeated a few times, and conflicts with the STATEMENT from TSMC back in October that they were going to be shifting production from Pascal TO VOLTA GPUs around the end of the year.

I suspect there WILL be stock available for Volta when they're released, given how much production lead time exists, but I suspect that pent-up demand will chew through that stock in a hurry.

Tradeoff on the "low MERV" stuff is it doesn't filter much - but if all you want is dust removal the MERV 4 level stuff is enough, and has fairly low air restriction.
If you just want to keep water out, there are "fiberglass" type washable "filters" that have VERY low restriction but don't actually filter anything at the particulate level.

ANY filter is going to kill airflow, unless you use fans designed for "high restriction" or "high backpressure" usage, and even THOSE will lose some airflow.

Near as I can figure, a standard Lasko 20" box fan (officially rated around 2400 CFM but I can't remember where I finally found that figure) MIGHT manage 300 CFM pulling through a 3M "Filterete 800" level filter (This equates out to about MERV 9 I think?).

Auto air filters are VERY high restriction - they are designed to work with an engine that generates a LOT of vaacum at the air intake.

Newegg has a sale right now on a couple Gigabyte "refub" cards - 480 2-fan Windforce and 1070 3-fan Windforce models.

They're cheap enough by CURRENT pricing that it's worth it even though you PLAN to have to replace the fans a few months to a year down the road.

I'd not have mentioned it except I'm SURE they will be out of stock by the time my "48 hour wait to order more" runs out. 9-)

For reference, just moved all 3 of my Aorus 1080 ti cards to one rig together yesterday (long planned change that I finally got around to driven by my moving my Vega into my gaming machine to replace one of the 1080 ti cards).
There is noticeable variation between the cards depending on position IN the rig (the outside card does noticeable better no matter WHICH actual card is in that slot).

Boost clock reaction to temperature of the GPU (and RAM perhaps?) makes a noticeable difference on hashrate AND efficiency for those 3 cards, even though actual card-t0-card variation is very small between the 3.

The 1050 ti doesn't want core overclocked at all on ETH - there are very few IF ANY cards that are not RAM limited on ETH mining (even my R9 290 cards with the VERY WIDE memory bus are RAM limited).
It also seems limited on how far you can OC the RAM before you bump up to a higher-latency "strap" that ends up slowing ETH mining performance or it gets unstable.

There just isn't a lot of tuning you CAN do on these cards.

 More like 6 million, perhaps as high as 7, is my estimate - but I also estimate that 75% more or less of those were AMD.

 Vs over 50 million discrete GPUs sold in 2017 total, noticeably but not a BIG factor especially on the Nvidia side.

 2017 4Q saw the FIRST year-vs-year increase for the quarter, and IIRC 2017 as a whole saw a tiny increase, both for the first time in several years, on PC sales in general - and most reports included commentary that "high end" and "gaming type" systems saw a bigger jump.

All of the Pascal cards are listed as CUDA Compute 6.0 or 6.1 capability.
I'm not sure where the numbers you are getting are from or about?


Might just be card-to-card variation. Have you tried +100 core +200 memory yet, since you're running it on Linux?

It would be nice if OverdriveNTool was available in a normal .zip file instead of that wierd NOT WIDELY SUPPORTED .rar format junk.

Or use the LONG_standing Curecoin and FoldingCoin "shared folding" option.
Is "Medic coin" even up and running yet?


RX 470 does NOT pull 25Mhash+ on ETH on 80 watts much less 60 - more like 100-120 in actual usage.
I've got a FEW of those.
GPU-Z does NOT give accurate power draw information, according to my wattmeter, even after factoring in for PS efficiency.

They're not rare - they've just been out of production for quite a while so NEW ones are rare.

No clue on cuda version.
I THINK they are running the 384.98 drivers, as I also have 1070 ti cards in the machine.

Are you getting the same hashrate on the Aorus as on the Zotac?

Also, try +100 core +200 memory - I figured out LINUX works with "effective" clock rates not with "base" clock rates a couple nights back, and the +100 +100 came from testing on a Windows machine.

Iffy if they have any plans at all to make a equihash miner.
Probability zero of them going bankrupt anytime soon, they're making money hand over fist on the S9's they CAN get made, not to mention the L3+ and other lower-volume models.

If space is at a premium, a current-model Backblaze 4u rackmount case mounts 60 drives - abet it's a little longer than a "normal" 4u case, but it is specifically optimised for lots of drive throughput.
They use a Supermicro motherboard, should be able to upgrade the specified CPU to one with more cores *IF* needed to handle that many drives in a reasonable read timeframe.

 What happened is that ETH price kept climbing, while AMD cards got way expensive due to lack of supply and a few folks ever started buying Nvidia cards - but the supply of cards did NOT keep up with the price climb so the hashrate KEPT climbing 'till the price drop around mid-Feb - at which point ETH hashrate has almost flattened out other than normal day-to-day "luck" variation and the variations when other "basket of equal profitability" coin or coins have a price jump or drop causing folks and autoswitch software to change coins.

I don't see ANY point of "near vertical" on the chart, especially after expanding it out.

*IF* anyone actually released an ASIC for ETH, it should also work on ETC or any other ethhash/daggerhashimoro algorithm based coin just like the current GPU miners do, just point at an applicable pool.

I was using EWBF - have played with DSTM a little but so far it gives the same hashrate (give or take 1%) as EWBF on my cards at the settings I use - NOT worth the 2% dev fee.

This is not to say "don't try DSTM yourself", as YOUR cards at YOUR settings might see more than a 2% improvement in hashrate and there is no way to know for sure 'till you TRY it.

I have not tried BMiner and am unlikely to do so as all of my Nvidia systems at this point are LINUX based and I see ZERO reason to move back to the instability of Windows on them.
I only tolerate Windows on my Polaris and Vega AMD based rigs as the LINUX drivers for the recent generation AMD cards are junk and support is WAY worse than for the fglrx (R9 3xx and older) generation cards, which wasn't SUPER great to start with.