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Hello, i don't pay electricity cost so i want to find the most powerful GPU to mine ethereum even if the electricity cost is pretty high. Graphic card around 200-300$
Thank you

I think you may look for good, old and cheap rx580 8gb cards. I think it have best price/performance ratio.
or something from new amd 5700 series, there are plenty models

RX400 series are like nothing online, 50$USD per some places used
get a bunch of them maybe, they do average 30mh/s
Power you say is not an issue so even get 580's if they are cheap, as they will do maybe 10% more hash

if power not an issue go AMD imo, Nvidia cards hold value well and are still expensive to flat out purchase :(

Totally agree - also look out for the sapphire rx470 mining versions, they're now dirt cheap. Just obviously harder to resell, but they'll give 30+mh/s each...

You can check the AMD Radeon VII this is one of the most powerful and higher hashrate with ethereum compared to Nvidia cards.

Those cards mention above like rx570 or rx580 are much cheaper AMD cards but since you are looking for higher hashrate I suggested the VII but if you are ok on filling up all PCIe in your rig RX570 is a better option.

all valid suggestions above:)
you should probably go with AMD 8GB Polarises (RX570 with 8 GB, get Sapphire Nitro as it has excellent performance and great cooling) it will almost certainly hash above 31MH. no point getting 580 as there's almost no benefit, see below:

These are all 570 (mixed 4gb and 8gb) except the four 580

https://i.postimg.cc/qMnk7CDT/gplh.jpg

the highest stable hash on polaris - 32.7MH I'm getting on RX570 8GB(samsung)

Thank you guys for your responses. I'm going for some RX 570 Sapphire Pulse 8GO, i can buy them for 170euros.

if I make a rig of 4 radeon cards, what will be my monthly profit without counting the electricity cost ? (ethereum or USD)

 :)


edit : if i build a rig with 4 radeon rx 570, do i need 2 power supply or just 1 with more power ?  thx

Use calculator like https://whattomine.com/

Anyway, according to whattomine this is what will be your daily earning $1.44 without electricity cost.



One PSU with 700+ watts is fine for 4 AMD cards these cards are not powered hungry if you modify the BIOS.

you should get a good psu, its a critical part of the whole setup. something like evga or seasonic with lots of cables and good efficiency
...also why 170E?

here it is 127E new (no vat)
https://i.postimg.cc/KvtPhK0g/rx570-8g.jpg

I think that the best deal for you should be Radeon Vega 64 since you say that power is not an issue and your budget is 200-300 per card.If you have a total of 200-300 budget to spend go for Rx 470/570 as they can easily do near 30 or even 30mhs per card depending on the brand.

Definitely go with RX 580 series as others have already recommended.
You can easily find them for cheap on second hand online selling sites.
Do check if the cards have dual bios as the newer version tends to have it as it will save you from bricking in bios modding if things go wrong.

well... I don't find dual bios to be that critical. most of my polarises (and I have a lot) are Sapphire nitro(or nitro+ as they were called before 570/580 release)
In fact I used dual bios only once and without any actual benefit. And I had several temporary "bricked" GPUs - wrong bios flashed, which I fixed with flashing the proper bios (it was long time ago so I don't remember the details, it works fine, maybe you need to DDU the drivers to make it boot - the GPUs will still sit on the PCIE and ATIflash will see it)

Most of the RX series don't come with dual bios's. I think the Sapphire one was the only RX series that came with dual bios. Most of mine with various manufactures never came with it. Actually even many of my old R9 280X also didn't come with the dual bios.

I think its a cost cutting measure and these are low priced tier GPUs and they don't want to put too many components on the PCB which are mostly never used. I think these days manufacteurs don't want people modding their bios anymore like in the old days. Back then you would check for new BIOS's every 6 months for your GPUs like you would for your MOBO's but these days that's rare. Its not really needed.

If you brick the GPU, you just need to short 2 pins on the PCB and it enters the GPU in a testing mode and then you can use DOS and do a manual flash that way to recover your BIOS. But honestly as long as you don't do multiple flashes to GPUs at once you shouldn't run into any issues.

Just dump your current bios, open up a software to mod the straps and save the bios and flash that exact bios. Worst case is you get crashes during mining and you can always re-flash your backup bios.

I have two of these 580 sapphire cards for sale and they have already been flashed getting 33.5mh/s and have dual bios physical switch on them.
They are the special editions with the blue led fans.
Have them listed in the goods section if the OP still hasn't found an amd card they like and will mail to Europe for em.

The AMD Radeon RX Vega 56 is one of the best value-loaded graphics card on the market right now. Benchmarks confirm that it runs faster than the Nvidia GTX 1070 and, thanks to the Bitcoin mining craze, it’s also cheaper to boot. Again, it can be a tricky GPU to track down, and it's power consumption means it might end up being an expensive GPU to run 24/7 in a mining rig. Still, it's excellent at mining, so if you can find one, it's definitely a worthy contender.