Buying GPUs, need an opinion | Bitcointalksearch.org

btcgolong

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Quote from: puwaha on July 03, 2017, 01:26:32 AM

Quote from: SubZer0 on July 02, 2017, 06:24:32 PM

Lol, i was confused with the 1080ti's with the other memory.
Yes i know 1070's can do a lot more than 1080's.
But i thought the AMD cards could mine way better and efficient in other coins.. or am i wrong lol

AMD cards are more efficient at certain algorithms, and Nvidia more efficient in others. They can both mine practically all the same coins that matter though. When cards were available, the RX470 was the sweet spot for Etherium when it came to price per Megahash. An nvidia 1070 is the current sweet spot for cards that are available. A plain 1080 is not a good value at today's prices, and a 1080ti is a powerful card when you put it on the algos that nvidia does best.

Great post, thanks for the info...but I don't know where he is getting the RX 580, that card is impossible to find (esp. at a far price).

SubZer0

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I am building on ASUS Z270A, i wanted to begin with 2 1070's and than expand.
Will it work good if i start with one 1080ti and 2 1070's? Will they work good combined?

Jating

hero member

Activity: 2842

Merit: 772

Quote from: QuintLeo on July 03, 2017, 04:55:01 PM

GTX 1080 is lower hashrate than GTX 1070 on ETH, but somewhat better on everything else I've seen.
For Skein Groetsl and the ZEC algo in particular, it's about 15-20% higher hashrate than a GTX 1070 if they are set to similar "OC vs a Founder's Edition" settings.

Whattomine assigns hashrates arbitrarily, sometimes they are "reasonable" sometimes they are quite a bit off, and OC/UC/UV/TDP settings will affect that a LOT anyway.
Nothing they can do about that, given how wide a range of hashrates the SAME CARD (much less the same GPU in different cards) will demonstrate depending on settings and luck in the Silicon Lottery.
They do seem to assume "modded BIOS" cards on the AMD side, and some OC from most of the hashrates I've seen them use.

It's a useful site, but you need to know what YOUR cards will manage for it to be a good comparison site.

I just use the 1080 for ZEC. It is much better there.

QuintLeo

legendary

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GTX 1080 is lower hashrate than GTX 1070 on ETH, but somewhat better on everything else I've seen.
For Skein Groetsl and the ZEC algo in particular, it's about 15-20% higher hashrate than a GTX 1070 if they are set to similar "OC vs a Founder's Edition" settings.

Whattomine assigns hashrates arbitrarily, sometimes they are "reasonable" sometimes they are quite a bit off, and OC/UC/UV/TDP settings will affect that a LOT anyway.
Nothing they can do about that, given how wide a range of hashrates the SAME CARD (much less the same GPU in different cards) will demonstrate depending on settings and luck in the Silicon Lottery.
They do seem to assume "modded BIOS" cards on the AMD side, and some OC from most of the hashrates I've seen them use.

It's a useful site, but you need to know what YOUR cards will manage for it to be a good comparison site.

Calatravo

newbie

Activity: 65

Merit: 0

Hi guys
Im thinking of buying some 1070s but today i saw that the 1080 wouldnt be much more expensive so i checked on what to mine whats about the profit. They give me a better Prof about 50%! I read about that the are not that eficient in mining ether or zcash because of gddrx?!? but on "whattomine" it says its just like the Prof of the 1070.
So i habe some questions:
How are the profits on whattomine calculated (overclocked etc?) ?
Anybody running some 1080s and what algo with?
What would you recommend to buy? 1070 are just about 50 cheaper.

THX a lot! Sry for my Bad english and im Kind of noobie

Calatravo

puwaha

sr. member

Activity: 700

Merit: 294

Quote from: SubZer0 on July 02, 2017, 06:24:32 PM

Lol, i was confused with the 1080ti's with the other memory.
Yes i know 1070's can do a lot more than 1080's.
But i thought the AMD cards could mine way better and efficient in other coins.. or am i wrong lol

AMD cards are more efficient at certain algorithms, and Nvidia more efficient in others. They can both mine practically all the same coins that matter though. When cards were available, the RX470 was the sweet spot for Etherium when it came to price per Megahash. An nvidia 1070 is the current sweet spot for cards that are available. A plain 1080 is not a good value at today's prices, and a 1080ti is a powerful card when you put it on the algos that nvidia does best.

JungleOnion

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Activity: 868

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I got myself a amd rig and its a mix of 570, 580 and 470, both 4gb and 8gb, all of them in stock give me around 24MH/s only the rx470 gives me 23, but after modding them they give around 29-30. At the end with the rx 4xx or 5xx series what matters is the wattage. I am building an nvidia rig, will be fun to compare them later on.

SubZer0

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Activity: 274

Merit: 100

Quote from: puwaha on July 02, 2017, 05:45:49 PM

Quote from: SubZer0 on July 02, 2017, 05:09:58 PM

I'm having the same problem with choosing between 1070's or RX580's 8GB.
I like the fact that the AMD cards can mine a lot of coins, but they are way overpriced at this moment.

I suggest you wait for the RX 580s to come back into stock and leave all the GTX 1070s for me to buy... since you don't think that nvidia cards can mine the same coins as AMD.

Lol, i was confused with the 1080ti's with the other memory.
Yes i know 1070's can do a lot more than 1080's.
But i thought the AMD cards could mine way better and efficient in other coins.. or am i wrong lol

puwaha

sr. member

Activity: 700

Merit: 294

Quote from: SubZer0 on July 02, 2017, 05:09:58 PM

I'm having the same problem with choosing between 1070's or RX580's 8GB.
I like the fact that the AMD cards can mine a lot of coins, but they are way overpriced at this moment.

I suggest you wait for the RX 580s to come back into stock and leave all the GTX 1070s for me to buy... since you don't think that nvidia cards can mine the same coins as AMD.

SubZer0

full member

Activity: 274

Merit: 100

I'm having the same problem with choosing between 1070's or RX580's 8GB.
I like the fact that the AMD cards can mine a lot of coins, but they are way overpriced at this moment.

talkingdreams

member

Activity: 89

Merit: 10

I would have gone for the 1070 gtx or the 580. It also depends on where you live (how much electricity you pay).

Vann

hero member

Activity: 1036

Merit: 606

Actually the R9 295 X2 can do ~65 - 70 MH/s but use ~500 W each. If you can pick up used cards and have good electric rates, they are a good option to get a lot of MH from a few cards. Problem is they are going for 3x what they were going for used two months ago.

https://youtu.be/TM8Pj_uLqxA?t=5304

1234ms

newbie

Activity: 29

Merit: 0

Buy the 1070 gpu. The 295x has a good hash rate (ethereum 50-60mhs), however it consumes a lot of power and generates a lot of heat. You will require one 1000w psu for each 295x2 and if you have several of them you will have to invest in cooling. Additionally, the 295x2 tends to burn VGA cables, I have a total of 4 spoilt VGA cables and 1 idle sapphire 295x2.

Jating

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Activity: 2842

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Quote from: smartcrypto on June 10, 2017, 02:51:09 PM

i guess i should stick with rx 580. price difference is $50 per card to rx 480. and power consumption not so much.

580 is the same as 480, but it might have more resale value.

smartcrypto

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i guess i should stick with rx 580. price difference is $50 per card to rx 480. and power consumption not so much.

Emoclaw

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Quote from: Vann on June 10, 2017, 07:32:23 AM

Quote from: Emoclaw on June 10, 2017, 07:28:41 AM

Quote from: MATHReX on June 10, 2017, 06:55:26 AM

Get 580s, they are great for dual mining! I would recommend 8GB Variants as the DAG file gets bigger time by time, 8GB will be long lasting and moreover, they are easy to sell.

The DAG limit is projected to be hit by September 2019, by which the cards will be extremely obsolete for mining and/or Ethereum will have switched to PoS.
The 4GB variants are the best value, except for when the price difference is in the neighborhood of 20 dollars or less.

Yea, but once the Dag gets over 3GB by early next year, you won't be able to dual mine effectively with 4GB cards. You already can't dual mine with 3GB cards.

Still, by early next year you will have made ROI plus enough money to replace all your RX GPUs with Vega ones.

Jating

hero member

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Quote from: adaseb on June 10, 2017, 01:13:20 PM

Don't worry about the DAG. Once the DAG >4GB you won't be mining anyways by then.

I heard there will be mixed PoS and PoW for long time.

adaseb

legendary

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Don't worry about the DAG. Once the DAG >4GB you won't be mining anyways by then.

smartcrypto

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Quote from: MATHReX on June 10, 2017, 06:55:26 AM

Get 580s, they are great for dual mining! I would recommend 8GB Variants as the DAG file gets bigger time by time, 8GB will be long lasting and moreover, they are easy to sell.

enlighten me on the dag file? i used to mine doge and other coins and back then it didnt matter what gpu you had or how much memory other than the hashrate.

Vann

hero member

Activity: 1036

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Quote from: Emoclaw on June 10, 2017, 07:28:41 AM

Quote from: MATHReX on June 10, 2017, 06:55:26 AM

Get 580s, they are great for dual mining! I would recommend 8GB Variants as the DAG file gets bigger time by time, 8GB will be long lasting and moreover, they are easy to sell.

The DAG limit is projected to be hit by September 2019, by which the cards will be extremely obsolete for mining and/or Ethereum will have switched to PoS.
The 4GB variants are the best value, except for when the price difference is in the neighborhood of 20 dollars or less.

Yea, but once the Dag gets over 3GB by early next year, you won't be able to dual mine effectively with 4GB cards. You already can't dual mine with 3GB cards.

Topic: Buying GPUs, need an opinion (Read 2004 times)