AMD Radeon RX 480 What do you think?

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Comments

  • thesmokingmanthesmokingman Member Posts: 152 ✭✭
    Jukebox said:

    Eastwind said:

    The memory bandwidth is just 256 bit, R9 390 is 512 bit. It might not be good for Eth mining.

    7970 have 384 bit and 2048 SP
    380X have 256 bit and 2048 SP

    But 380X sligtly faster than 7970 on ETH mining

    RX 480 seems to be good for but I see one problem - most reviewers say that power delivery will be divided - 75 W through PCI-E slot and 75 W through 6 or 8 pin power plug.

    So we definitely need to use powered risers with RX 480 or we burn our mobo's.
    7970 is also loosing hashing speed with each EPOCH change, however it appears the 380's are unchanged.
  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.
    The real gem in here should be the rx 470 which I expect to perform like r7 370 around 14-15MH/s but using 75 instead of 120-130W
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    bbcoin said:

    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.

    Mem bus is a big question. Actually in ETH mining
    [email protected]@384 bit slower than [email protected]@256 bit
    Fury [email protected]@4096 bit slower than [email protected]@512 bit
    bitcanuck said:


    Most cards (R7 370, R9 380, etc) are the same way and draw 40-70W through the PCI-e bus 12V supply.
    I use unpowered risers with R7 370s and the ribbon cables don't even get warm.

    Most 7870/270/370 cards have dual 6-pin power plugs
    The same is for 7970/280/380 cards - dual power plug.

    Reference RX 480 have only one 6-pin plug
  • HelioxHeliox Member, Moderator Posts: 634 mod
    bbcoin said:

    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.
    The real gem in here should be the rx 470 which I expect to perform like r7 370 around 14-15MH/s but using 75 instead of 120-130W

    Just a little edit there.

    A nano does 27-28 stock settings :)

    Does 23.5Mh underclocked to 800 core @ around 75watt :)
  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    Jukebox said:

    bbcoin said:

    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.

    Mem bus is a big question. Actually in ETH mining
    [email protected]@384 bit slower than [email protected]@256 bit
    Fury [email protected]@4096 bit slower than [email protected]@512 bit
    bitcanuck said:


    Most cards (R7 370, R9 380, etc) are the same way and draw 40-70W through the PCI-e bus 12V supply.
    I use unpowered risers with R7 370s and the ribbon cables don't even get warm.

    Most 7870/270/370 cards have dual 6-pin power plugs
    The same is for 7970/280/380 cards - dual power plug.

    Reference RX 480 have only one 6-pin plug
    370 has got one 6-pin = 75via plug +~40W via unpowered risers, all works fine.
    Heliox said:

    bbcoin said:

    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.
    The real gem in here should be the rx 470 which I expect to perform like r7 370 around 14-15MH/s but using 75 instead of 120-130W

    Just a little edit there.

    A nano does 27-28 stock settings :)

    Does 23.5Mh underclocked to 800 core @ around 75watt :)
    Ok, ok ;) hah I expect rx 480 to perform in a similar way effectively killing off nano for mining or causing it to drop in price... that is unless people with ITX boards are nuts.
  • HelioxHeliox Member, Moderator Posts: 634 mod
    edited June 2016
    bbcoin said:


    Heliox said:

    bbcoin said:

    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.
    The real gem in here should be the rx 470 which I expect to perform like r7 370 around 14-15MH/s but using 75 instead of 120-130W

    Just a little edit there.

    A nano does 27-28 stock settings :)

    Does 23.5Mh underclocked to 800 core @ around 75watt :)
    Ok, ok ;) hah I expect rx 480 to perform in a similar way effectively killing off nano for mining or causing it to drop in price... that is unless people with ITX boards are nuts.
    Well, i'm a big nano fan, but in a way i truely hope you're right though..

    As said before, i will be definitely getting me some :)
  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    Heliox said:

    bbcoin said:


    Heliox said:

    bbcoin said:

    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.
    The real gem in here should be the rx 470 which I expect to perform like r7 370 around 14-15MH/s but using 75 instead of 120-130W

    Just a little edit there.

    A nano does 27-28 stock settings :)

    Does 23.5Mh underclocked to 800 core @ around 75watt :)
    Ok, ok ;) hah I expect rx 480 to perform in a similar way effectively killing off nano for mining or causing it to drop in price... that is unless people with ITX boards are nuts.
    Well, i'm a big nano fan, but in a way i truely hope you're right though..

    As said before, i will be definitely getting me some :)
    Same here :) hence why I ordered my 370's off of Amazon to have time till 20th of July to make my decisions. If rx series turns out good I will simply send them back the 370's and get rx.

    Would love to see 14MH/s out of rx 470 as it's tdp is supposed to be 75w. No additional power required.
    6x470 with a good 550W PSU yes please ;)
  • HelioxHeliox Member, Moderator Posts: 634 mod
    bbcoin said:

    Heliox said:

    bbcoin said:


    Heliox said:

    bbcoin said:

    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.
    The real gem in here should be the rx 470 which I expect to perform like r7 370 around 14-15MH/s but using 75 instead of 120-130W

    Just a little edit there.

    A nano does 27-28 stock settings :)

    Does 23.5Mh underclocked to 800 core @ around 75watt :)
    Ok, ok ;) hah I expect rx 480 to perform in a similar way effectively killing off nano for mining or causing it to drop in price... that is unless people with ITX boards are nuts.
    Well, i'm a big nano fan, but in a way i truely hope you're right though..

    As said before, i will be definitely getting me some :)
    Same here :) hence why I ordered my 370's off of Amazon to have time till 20th of July to make my decisions. If rx series turns out good I will simply send them back the 370's and get rx.

    Would love to see 14MH/s out of rx 470 as it's tdp is supposed to be 75w. No additional power required.
    6x470 with a good 550W PSU yes please ;)
    Haha definitely!

    But remember (as you probably know), it will probably consume more than 75w .. (with a non modded rom that is.. :p)
  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    edited June 2016
    Heliox said:

    bbcoin said:

    Heliox said:

    bbcoin said:


    Heliox said:

    bbcoin said:

    RX series is limited by the memory bus.
    For mining ETH I expect it to perform the same as Nano, around 25mhs at 150w @ stock settings.
    The real gem in here should be the rx 470 which I expect to perform like r7 370 around 14-15MH/s but using 75 instead of 120-130W

    Just a little edit there.

    A nano does 27-28 stock settings :)

    Does 23.5Mh underclocked to 800 core @ around 75watt :)
    Ok, ok ;) hah I expect rx 480 to perform in a similar way effectively killing off nano for mining or causing it to drop in price... that is unless people with ITX boards are nuts.
    Well, i'm a big nano fan, but in a way i truely hope you're right though..

    As said before, i will be definitely getting me some :)
    Same here :) hence why I ordered my 370's off of Amazon to have time till 20th of July to make my decisions. If rx series turns out good I will simply send them back the 370's and get rx.

    Would love to see 14MH/s out of rx 470 as it's tdp is supposed to be 75w. No additional power required.
    6x470 with a good 550W PSU yes please ;)
    Haha definitely!

    But remember (as you probably know), it will probably consume more than 75w .. (with a non modded rom that is.. :p)
    BTW. do you think running gear like that would increase the chance of a breakdown since all the power needs to travel via motherboard lanes?

    @greenuser make yourself useful here, what would be a safe amount of electricity on motherboard lanes?
    Let's assume we run 6x75W gpu's are the lanes all separate for each PCI or is there a junction somewhere that could potentially burn facing high amperes?
  • greenusergreenuser 50.8862°N 4.5537°WMember Posts: 439 ✭✭
    Why risk the mobo. You are amusing the mobo manufacture QCs all boards for full load current.
    You may get a good one, but you may get a bad one. Remember, these boards are not military spec, they are made by the lowest bidder and only 1 in 10 (if you are lucky) tested to full load.

    The problem with low voltages is “volt drop” over a given length of circuit track/wire/connection. The lower the voltage and the longer the run, the greater the proportion of loss. This means that the joints on the edge connectors have to be shiny and spotlessly clean, The pins in the socket have to of good quality and in 100% A1 condition. And the PCB etching has to be accurate and well calculated. Remember, your going to its limits. A sudden rise in temp could drive you over the edge.

    Then you have the issue with propagation delay, are all of the voltage tracks on the PCB the same length? what with all these confounding variables I would use powered risers, but use the type with TO-220 sized voltage regulators packages.

    I would power each rises from the same source used for supplying the GPU that it is hosting. Which need not be the same source as the mob. Moreover: although, the risers want +12v, 0v, 0v and 5v from a SATA or MOLEX, I would use the 3.3v instead of the 5v so that the regulators of the risers don't have to work so hard.

    In all, when calculating current carrying capacity for a given size of cable/wire, always consider its length.

    12Vdc @ 75w = 6.25A So a 400mm long 18AWG is fine, but at 800mm long you would need to be at 16AWG... IF yo wanted less that 1% loss in volt drop.

    Cheap PSUs use cable at 3% volt drop. They are on the edge from new. It don't take long for it to start heating up.

    So to sum up, Use good risers, calculate the length of your cables as well as their current carrying capacity, and clean all connections with IPA. Never leave solder flux residue. And use 3.3v from your PSU for powered rises instead of 5v if you have the capacity. Keep cables as short as possible.
    Any unusual smells, shut down and feel for warmth.

    Useful too for calculating cable length/size
    http://www.solar-wind.co.uk/cable-sizing-DC-cables.html

    Good luck!
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    edited June 2016
    bbcoin said:



    Same here :) hence why I ordered my 370's off of Amazon to have time till 20th of July to make my decisions. If rx series turns out good I will simply send them back the 370's and get rx.

    Would love to see 14MH/s out of rx 470 as it's tdp is supposed to be 75w. No additional power required.
    6x470 with a good 550W PSU yes please ;)

    It's already known that 470 will be based on Polaris 10 chip with some SP's disabled - 2048 or so, and 4 GB VRAM

  • TermieTermie Member Posts: 130
    470 specs seems not to be sooo far away from 480:
    http://forum.ethereum.org/discussion/comment/42544/#Comment_42544
    sounds like a quite interesting mining card for me. :)
  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    edited June 2016
    Nice one @greenuser as I suspected. It might not burn but there's a bigger chance it will crash due to voltage instabilities.

    BTW some new info:
    rx 470 4gb $149 6pin 110W
    rx 460 2gb $99 no pin - under 75W probably bios locked around 60W for safety.


    Honestly? This might be a flop (for mining). rx 470 does have more shaders and speed than 370 but only a 128bit bus and the same power draw.
    rx 460 looks like r370 but it's got 128bit bus meaning it will suffer for ETH performance and be closer to R7 360.... Meaning under 10mh/s

    This starts to look like just another revision of same old shit by amd.

    Rx 480 is power limited by 6pin connector to match the 150w power draw.
    We will see many aftermarket revisions with single 8pin or 2x6pin to make it just another revision of 7950.
    AMD is getting seriously long milage out of that idea.
  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    Jukebox said:

    bbcoin said:



    Same here :) hence why I ordered my 370's off of Amazon to have time till 20th of July to make my decisions. If rx series turns out good I will simply send them back the 370's and get rx.

    Would love to see 14MH/s out of rx 470 as it's tdp is supposed to be 75w. No additional power required.
    6x470 with a good 550W PSU yes please ;)

    It's already known that 470 will be based on Polaris 10 chip with some SP's disabled - 2048 or so, and 4 GB VRAM

    From what I gather it will have 1300 or 1500 shaders. All depends on the memory bus. With 256 bit we have a winner but with 128bit bus it will be a flop.
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    bbcoin said:



    From what I gather it will have 1300 or 1500 shaders. All depends on the memory bus. With 256 bit we have a winner but with 128bit bus it will be a flop.

    Sure 99% that 256 bit, because of Polaris 10
  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    edited June 2016
    Jukebox said:

    bbcoin said:



    From what I gather it will have 1300 or 1500 shaders. All depends on the memory bus. With 256 bit we have a winner but with 128bit bus it will be a flop.

    Sure 99% that 256 bit, because of Polaris 10
    Well then with 1536sp 256bit 110w draw we should see 17mhs stock and 19 oc
    At 123-133w from the wall making it one of the best cards for mining. Would be nice and stable too because of the headroom for power Where rx480 is limited by the 6pin and could crash when temp increases.
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    edited June 2016
    bbcoin said:


    Well then with 1536sp 256bit 110w draw we should see 17mhs stock and 19 oc
    At 123-133w from the wall making it one of the best cards for mining. Would be nice and stable too because of the headroom for power Where rx480 is limited by the 6pin and could crash when temp increases.

    Think that
    470 is 1792-2048 SP, 256 bit, GPU OC up to 1250-1300 Mhz, 22-24 MH on ETH
    480RX - 28-30 MH on ETH

    My Sapphires 380X run on stock clocks with 0.1 V downvolt and make 21.5 MH now
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    bitcanuck said:


    With the 7Ghz memory on the 470, with a slight OC it should get 25-26Mh/s.

    1536 SP's - not to much :( 20-22 MH max IMHO
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    edited June 2016
    bitcanuck said:



    @Jukebox How about a wager of 1 eth? >24Mh I win, <23Mh you win, and 23-24Mh is a draw.</p>

    =) OK, but some positions must be noted.
    1. Card must use stock air cooling system.
    2. Original, Genoil or Claymore miner only can be used.
    3. No testnet, no benchmark - only ETH network.
    4. Card must keep 24-hour mining under 75 C on GPU with less than 75 % RPM with +25...+30 C air temp.
    5. No additional blowing/cooling can be used.
    Comments?
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    bitcanuck said:


    My MSI R7 370s run 75-80C with the stock BIOS running < 50% fan speed, so the temperature restrictions don't seem appropriate.
    How about just restricting it to stock BIOS, and to keep me from cherry-picking a card, using special cooling, etc, I'll agree to a max 10% OC over the stock BIOS clock speeds. I'm fine with Genoil or Claymore's miner, and of course I'm talking about mining on the current DAG.
    We'd also need a specific date when the bet gets decided. I'd suggest July 31st.

    Polaris seems to be able to run +50% GPU clock on stock voltage and cooling.
    Any OC, less than 75 C GPU temp with no more than 75% RPM, stock BIOS, soft volt-mod is allowed - seems to be honest conditions.

    It's only my own conditions to long-term mining.

    Time - 30 days after official release seems to be OK.

    BTW I think that we will see modded BIOSes, that unlock disabled SP's B)

  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    edited June 2016
    @bitcanuck Thats some poor msi you got. Ive just bought the cheapest xfx 370s with a single fan And at 55% they sit at 64C Currently running at 1038gpu and 1596 memory.

    It kind of doesnt make sens that those double fans provide less cooling...

    1536sp I say 17.5mhs stock, 19 stable OC and 20 max with some crashes. 1536 wont go over 20.
  • Dr_House86Dr_House86 Member Posts: 566 ✭✭✭
    Are you guys talking about the 480 or 470?
    What's a realistic power consumption in your opinion?
    I hope these cards do well.
  • BiodomBiodom Member Posts: 693 ✭✭✭
    edited June 2016
    @Dr_House86
    Realistic would be probably achieved by multiplying TDP by 1.5
    480 TDP 150, therefore, 225W max
    470 TDP 110, therefore, 165W max

    I am thinking that one EVGA 1300 can run seven 470, a nice 140-160mh rig.
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    bitcanuck said:


    OK. I haven't played with fan profiles before but that shouldn't be a problem.
    I accept those terms.

    One final point. The winner must confirm receipt of payment on these forums within 24hrs of receiving payment. Failing this, the looser is allowed to publish the eth address the payment was sent to along with the transaction ID in order to prove his honesty.

    I'm accept too. Just PM me if i miss deadline.
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    Biodom said:

    @Dr_House86
    Realistic would be probably achieved by multiplying TDP by 1.5
    480 TDP 150, therefore, 225W max
    470 TDP 110, therefore, 165W max

    I am thinking that one EVGA 1300 can run seven 470, a nice 140-160mh rig.

    Hoping that AMD keeps downvolting capability. Maybe you can run up to 10 of 480 RX
  • BiodomBiodom Member Posts: 693 ✭✭✭
    edited June 2016
    isn't rx 480 slightly below r9 390 in teraflops? maybe 26-27 Mh?
    I hope for 22-24 mh for 470.
  • bbcoinbbcoin Member Posts: 377 ✭✭✭
    Biodom said:

    @Dr_House86
    Realistic would be probably achieved by multiplying TDP by 1.5
    480 TDP 150, therefore, 225W max
    470 TDP 110, therefore, 165W max

    I am thinking that one EVGA 1300 can run seven 470, a nice 140-160mh rig.

    This guy... where did you get this from?

    110w for rx470 and 150w for 480. 150w is the physical limit of those cards due to a single 6pin

    Power draw depends on the efficiency of your power supply. 90% gold will give you 123 for rx470 and 167 for rx 480
  • JukeboxJukebox Member Posts: 640 ✭✭✭
    Biodom said:

    isn't rx 480 slightly below r9 390 in teraflops? maybe 26-27 Mh?
    I hope for 22-24 mh for 470.

    We don't know OC capabilities of Polaris 10 yet, but they mich higher than Hawaii.
  • Dr_House86Dr_House86 Member Posts: 566 ✭✭✭
    If this is the case i must sell my 390's and hope for a good price.
  • BiodomBiodom Member Posts: 693 ✭✭✭
    edited June 2016
    bbcoin said:

    Biodom said:

    @Dr_House86
    Realistic would be probably achieved by multiplying TDP by 1.5
    480 TDP 150, therefore, 225W max
    470 TDP 110, therefore, 165W max

    I am thinking that one EVGA 1300 can run seven 470, a nice 140-160mh rig.

    This guy... where did you get this from?

    110w for rx470 and 150w for 480. 150w is the physical limit of those cards due to a single 6pin

    Power draw depends on the efficiency of your power supply. 90% gold will give you 123 for rx470 and 167 for rx 480
    THAT guy...
    A single 6 pin PCIE connector CAN deliver much more than 75W (75W PCIE, 75W from the slot). They just cannot legally say that. In BTC land people routinely put up to 140-150W on a single PCI connector, so the max would be 140-150W from PCIe+75w (at least) from the 16X PCIe slot on the mobo or powered riser=215-225W max. It is possible.
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