1080SLI or 1080ti

[nurzhankz]

Hello guys. I'm new to this forum and to mining itself.
Tried to find such topic but could't do it.
So I have some budget to get GPU and can't really decide, is it better to get 1080 x2 or 1080ti x1 with same budget for both?
Would be greatful to get some advice.

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[CryptoPlay]

2 will always be better than 1 but 1080 is not good for mining.
You'll be better with 3 1070.

Yeah, i know. Some 1080 are really cheap exactly cuz of that.
The 1080 will perform similar to a 1070 using little more W.
If you are willing to game and mine, 2x1080 could be good.

[QuintLeo]

Are your 1080 cards amazingly cheap, or is your 1080 ti amazingly overpriced?

 1080 ti normally runs more like 50% higher price than a 1080 of the "same model", not double.

 The REAL debate would be "3 x 1070 ti  vs 3 x 1080  vs 2 x 1080 ti" based on normal pricing I see.

[Moondoggie]

1080ti is much better

[nurzhankz]

Are your 1080 cards amazingly cheap, or is your 1080 ti amazingly overpriced?

 1080 ti normally runs more like 50% higher price than a 1080 of the "same model", not double.

 The REAL debate would be "3 x 1070 ti  vs 3 x 1080  vs 2 x 1080 ti" based on normal pricing I see.

I'm comparing Gigabyte GTX 1080 AORUS x2 (price at my local store is 710$) to Asus 1080 ti Poseidon (price at my local store is 1300). Price matter is only 120$.

[VirosaGITS]

Are your 1080 cards amazingly cheap, or is your 1080 ti amazingly overpriced?

 1080 ti normally runs more like 50% higher price than a 1080 of the "same model", not double.

 The REAL debate would be "3 x 1070 ti  vs 3 x 1080  vs 2 x 1080 ti" based on normal pricing I see.

I'm comparing Gigabyte GTX 1080 AORUS x2 (price at my local store is 710$) to Asus 1080 ti Poseidon (price at my local store is 1300). Price matter is only 120$.

Be careful taking replies here for granted, it seem like you got a few people giving misinformation there.

1080 is actually great, just not for eth mining. Both 1080/ti are a good choice for Zcash, but 1070/ti are better for ETH. For current mining Zcash scene, 1080 is more power efficient than all others. You can get 580 sols for 160w~ Its about twice the profitability of the other cards on ETH. Meanwhile the TI version can do over 700 sols with ease but at lesser hash per watts.

But if Equihash was to crash and you would want to go mine ETH, you would have difficulty with the 1080, while the 1080 ti would fare okay.

You will want to take everything you read here with lots of salt, fetch the price, watts and hash of the main algos and compare yourself on https://whattomine.com

[QuintLeo]

The Aorus is a nice card - I've got 3 of the 1080 ti models of those - but they do require 2 x 8-pin power which makes getting power to them a bit of a pain for a multi-GPU setup.

 I prefer the EVGA SC model on 1080 ti cards - cooling isn't quite as good but since I aim for efficiency in my mining it's plenty good ENOUGH.
 Even that ASUS blower-type card has "good enough" cooling (and like the EVGA SC it's also 8 + 6 power) when mining EFFICIENTLY with it - and it tends to be one of the lower-cost 1080ti options (other than FE cards with their REALLY BAD cooling setup).


 Isn't the Poseidon a "water-cooling" type card? Those ALWAYS run a good bit higher cost than normal air-cooled cards.

 I'm also guessing you're not in the US, as BOTH of those prices are insanely high.


 1080 is not the most efficient equihash mining card - the 1070 ti is - but the 1080 is VERY close when both are set for "best efficiency".

 NOTHING NVIDIA is worth considering for ETH mining other than the 1060, as AMD cards can pull almost the same hashrate as a 1070 (1070 ti is same on ETH, 1080 is WORSE) while costing about HALF what a 1070 costs.
 1080 ti isn't that much better than the 1070 on ETH hashrate - 20% ballpark - while costing commonly more like 70-80% more for "same model" cards - which makes it a FAR WORSE option on hash/cost than the 1070 which is ALREADY a very bad option on hash/cost.

[VirosaGITS]

 1080 is not the most efficient equihash mining card - the 1070 ti is - but the 1080 is VERY close when both are set for "best efficiency".

I think you are spreading minsinformation yourself? You're not presenting any numbers, here are my 1070 at upper hash vs 1080 at same power limit;

GTX 1070
GPU0: 448 Sol/s GPU1: 450 Sol/s GPU2: 453 Sol/s GPU3: 453 Sol/s GPU4: 461 Sol/s GPU5: 460 Sol/s
https://i.imgur.com/3RZaqMj.png
2.8 Sols per Watts

GTX 1080
GPU0: 558 Sol/s GPU1: 564 Sol/s GPU2: 558 Sol/s GPU3: 560 Sol/s GPU4: 555 Sol/s GPU5: 557 Sol/s
https://i.imgur.com/lBHgW6d.png
3.45 Sols per Watts

GTX1080 is thus way more efficient *and* more powerful. You can drop the GTX 1070 to 120w and keep >400 Sol's, the efficiency go way up but the GTX1080 at same draw is still 100 Sols higher.

[QuintLeo]

You're not reading what I POSTED.

 I SAID "when set for best efficiency", not "AT HIGH HASHRATE".

 I also said "1070 ti" NOT "1070".

 1070 ti does 460+ sol/s at 106 watts, at that same power point the 1080 models I've worked with sometimes match but usually give a little LOWER hashrate, while the 1070 ti costs less than the 1080 for "same model" cards by normally around 10%.
 Nothing else in my experience EXCEPT THE TITAN V can manage 4.4+ efficiency reliably - but that thing is horrible on hash/$ basis.

 1080 does better when you push it harder, but it never manages 10% higher hashrate at any given power point on ANY of the cards I've tested - it starts pulling ahead on efficiency past about the 120 watt power point, but BOTH cards are getting less efficient fairly fast by that point.

 I'm not saying the 1080 is a BAD card - it's just not the king of efficiency on ZEC mining, by a fairly narrow margin it's #2 in my testing but for EFFICIENT mining it loses on a hash/$ basis to the 1070 ti (unless you get a SUPER sale on the 1080 or have horridly high overpricing on the 1070 ti).


 1070 ti is a complete waste on ETH - it has the SAME hashrate as the 1070 - and the 1070 at RECENT pricing is a waste on ETH as it gets blown away on hash/$ by the AMD RX 470/480/570/580 AND by the GTX 1060 (possibly even by the RX 460 and the GTX 1050 ti for that matter).
 The only reason the 1070 ever got widely used as an ETH mining card was when AMD pricing got into the SAME price range, but the 1070 hashes a LITTLE better than the AMD high-end Polaris cards.
 AMD high-end Polaris gouge pricing during the "extreme demand" period is also why 1070 pricing got pushed into 1080 pricing for a short while.


 I am not giving misinformation AT ALL, you just aren't reading what I'm SAYING.



 For the record, SOME 1070 cards manage 400 sol/s at 102-104 watts, but some are closer to 380, depends on the model and high the memory clocks reliably - but that's quite a bit less than either the 1070 ti that I was talking about or the 1080 we both were.