Bitcoin Forum

let us suppose that 4 cards RX 570 4GB , RX 570 8GB , RX 580 4GB and RX 580 8GB
now we want to know how much profit you can get from them from highest to lowest in regard of electricty cost and with it this is my question
in my search i found that RX 580 8GB comes first then RX 570 4GB then RX 580 4GB in nicehash calculator and no pressence for RX 570 8GB

AMD GPU profit greatly depends on its memory type. you can easily have a 470 that performs better than a 580.

You should buy the rx570 4GB because it's the cheapest.  The few percent extra hashrate that you *might* get (and it really is might b/c of silicon lottery and memory type) won't pay the premium on the card for a very long time.

Seriously, the lowest-end rx 570 4 GB can reach 30 MH/sec.  You can get them for $250, sometimes less, like $220.  A higher end RX 580 8GB is about $350.  If you're lucky you can push it to 32 MH/s.  You'll make an extra $2/month.  With those numbers, it'll take about 50 months to pay off the premium on the higher-end card.

Even if you're lucky and get the higher end card at a $50 premium over the 570 4GB, it would still take at least two years to pay off the premium.

that is for ethereum but what about other coins like monero or loki or sumo

All those cards have an only bit different on profit. I have few Polaris cards rigs, several Vram types (Micron, Samsung, Hynix) most of it running in almost similar hashing speed, and nearly same at power consumption, what makes it a bit different only on Vram size (not only on Ethash, also on some other algorithm). (based on my experience)

so you think it's only Vram size then if you chosse between RX 580 8GB or RX 570 8GB what you chosse ?

I have those both (almost can see the difference in performance), but I choose the younger one.

Only 400's series that has a few issues on power used, but it can handle with a few ways. If comparing to 400's series, I chose RX 500 series.

The RX 580 also has more cores than the RX 570, 36 vs 32. But I agree the difference in performance is not enough to pay a significant premium. Less than 5% on ETH and maybe up to 10% for core dependent algorithms. RX 580's also use about 15-20W more power than 570's. 8 GB cards will have better resale value for gamers and also will be able to mine Ethash much longer than 4 GB cards. I would get either card as long as it's not overpriced and has good cooling.

Yeah, I forgot about it. That was also one of my consideration choosing.

For me Comparing 570 and 580 same as comparing between R9 290 and 290X or 390 and 390x.

8GB cards also have much better hashrate on Cryptonight Heavy. just sayin

Why? The rx 400 series consumes less power while only losing 1-2 MH. When you do the math with economies of scale you should be getting higher profit ratios with the rx 400 cards. I have an rx 470 rig i've been running for almost a year now and it is my favorite because it is most stable and profitable.

Very true.  I’m running 480s on heavy and the 8gb cards get about 250hs more than my 4gb cards.  I’m in the process of switching out all my 4’s for 8’s.

For Eth algos, the 8gb cards aren’t worth it right now, but I like the flexibility of being able to run what ever algo suits my fancy at the time.

That is so true. Correct me if i'm wrong but 4 GB cards will be fine for ETH algos until up to 2020 i believe. That is more than enough time for those cards to ROI themselves twice over. You can then use the revenue to purchase new cards that will probably be more suited for mining.

Just saying that i've also experienced some bad 8 GB cards. Some of them were Elpida memory and were a pain to BIOS mod and get running stable.

On Windows 10, 4GB cards should be able to mine ETH until epoch 282, or ~09/2019 at the current block times. Since Windows 10 reserves 20% of GPU memory, once the DAG gets over 3.2GB, you will need to switch to Windows 7 or Linux to keep mining ETH for about another year and a half with 4GB cards. Just like once the DAG got over 2.4GB, 3GB can no longer mine ETH on Windows 10.

https://image.ibb.co/g75DA8/ETH_4_GB_Dag.png

https://investoon.com/tools/dag_size

Also generally speaking, GPU manufacturers will use the best binned chips and memory for the higher priced models within a linup vs the entry level cards.

It because most of 400's series, especially 480 has a power issue (PCIe power issue).

https://www.gamingonlinux.com/articles/the-amd-rx-480-seems-to-have-power-issues-you-may-want-to-be-aware-of.7555

http://www.techtimes.com/articles/169253/20160711/amd-fixes-rx-480-power-draw-issue-as-promised-with-16-7-1-driver.htm

Its very difficult to pick a card because you are correct that the larger memory cost more and hash faster, they generally cost more. Also the RX580 have more cores but depending what you are mining it might not make a difference.

Also it depends how retailers are pricing them. Usually there was a $50-75 price different between the 570 and 580, however later it seems that you are better off paying a couple of bucks more and getting the 580 8gb, even though its very expensive the 570 4gb is way overpriced at the moment over MSRP.

If you can get them at or close to MSRP then you should definately just get the 570 4gb and you will get 29MH/s no problem with that gpu.

why you buy 580 if 570 is make same hash rate ??

the deference 1-2 mh only and you pay 50-70$ more than 570

So All those cards have an only bit different on profit.
 

for me i only bought 4GB cards
because the profit not a big between 8gb + 4gb

and 4gb can we use to 2020 no problem

but the diffrent is at cryptonote algo ..8gb can got more about 220H

I have all those series GPUs,  I think hasn't a significant difference from all those although I know if see from how many cores, what price, and how many TDP, of course, there have the difference.

but if about profit, I think it depends on miners itself and other fees to be paid