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Testing the AMD Radeon RX 480 for Ethereum Mining

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The new AMD Radeon RX 480 is now officially out and we have some outcomes from tests we have truly carried out ourselves, outcomes that fairly a lot confirm an earlier leak that was posted about the anticipated hashrate. As you will see the quantity of examined algorithms is only 1 &#8211 Ethereum&#8217s Ethash as it seems that there are some problems at the moment running sgminer with most algorithms on RX 480&#8230 could be a driver issue, could be one thing else. Anyway, we are certain that most of you are interested in the Ethereum hashrate that the RX 480 is in a position to deliver and we have information about that. The hashrate for Ethereum mining that thr Radeon RX 480 delivers is great, however the power level is not that great, the cooling of the reference layout RX 480 is also not that great for mining and the value is also not what some individuals in some regions expected and on prime on shortages, even though in a lot of areas you can get the card at the value that AMD announced or close to it and there are ample cards.

Prior to we move to the tests we need to note that there are two variants of the Radeon RX 480, a single with 4GB video memory that apparently runs at 7 GHz and is with a decrease price (the $ 199 USD price) and a more pricey 8GB model with memory working at 8 GHz. At launch it is tough to locate 4GB versions as apparently they are a lot fewer as in contrast to the 8GB models, but if you are purchasing a card for mining the 8GB model is the one particular you would want. We have examined an ASUS reference style Radeon RX 480 card with 8GB and eight GHz video memory, so the benefits beneath are for mining Ethereum with that card. The 4GB model with seven GHz video memory must be slower by about two-3 MHs compared to the 8GB 8 GHz model, so if you are buying these for mining Ethereum go for the eight GB designs.


We are making use of Claymore&#8217s Dual Miner, starting with the default settings of 1266 MHz for the GPU and eight GHz for the video memory withing the common 150W TDP limit of the Radeon RX 480 GPU. The end result we are obtaining is about 24.7-24.eight MHS at stock settings with GPU-Z reported energy usage of about 108 W, but with actual power utilization measured at the wall of 177 Watt. So taking into account the energy conversion efficiency of an 80 Plus Gold PSU that was utilized the actual power utilization of the card is apparently 150W at the default settings. This is additional confirmed by the reality that even though mining Ethereum with the default settings the GPU frequency hovers up to about 1240 MHz and does not go all the way up to 1266 MHz. Primarily hitting the electrical power limit of 150W that the card has, increasing a bit the electrical power limiter by a number of percent more than the default 100% permits the GPU to remain at the total 1266 MHz&#8230 not that it makes any variation for mining Ethereum, but it could be crucial for other not so video memory intensive crypto algorithms.

With dual mining mode enabled to mine the two Ethereum and Decred at the exact same time the final results display about 24.three MHS for Ethereum and about 365 MHS for Decred (at default intensity of 30). More rising the Decred intensity to 35 decreased the Ethereum hashrate to about 24 MHS and increases the Decred mining hashrate to about 450 MHS. So essentially the RX 480 does rather nicely in dual mining mode with not so a lot of a drop in the Ethereum hashrate whilst delivering some good extra efficiency for mining Decred.


Moving to overclocking, the only issue we need to do is increase the video memory to the highest and in this case this implies 9 GHz (the card may be able to deal with much more, but the overclocking application or the driver is apparently capped at 9 GHz max). With the video memory at 9 GHz the RX 480 is capable of delivering about 28 MHS hashrate for mining Ethereum. It is highly achievable that even greater hashrate could be attained if you manage to get previous the 9 GHz limit for the video memory, but for the moment AMD&#8217s WattMan software or the Asus instrument that we employed do not currently let for much more. With the memory overclocked the energy usage is enhanced with just about seven-8 Watt at the wall, so undoubtedly really worth overclocking it for mining Ethereum. We have been a bit disappointed by the lack of overclockability headroom of the GPU that was in a position to get just about 1340 MHz with the stock voltage. Of course no point in overclocking it for Ethereum mining, in fact you might want to in fact downclock it to get much better power efficiency if mining only Ethereum.


What we are not also satisfied with is the stock cooling remedy and how it handles the heat from the RX 480. AMD has optimized the default profile for the fan to preserve the card silent and very sizzling, so clearly it is a no go for mining. What looks to work rather effectively is setting up the fan to about 80% and acquiring respectable temperatures with a moderately noisy card &#8211 great decision if noise from the mining rig can be an issue. With the cooling fan at 80% you can count on temperatures of about 72 degrees Celsius for the GPU, some thing that is a bit increased than you&#8217d probably want for 24/7 mining. Going for 100% fan the noise increases drastically and the temperatures drops to about 68 degrees Celsius, so not by significantly.

We are not too happy with the energy usage and the hashrate you get from the RX 480 for mining Ethereum, we type of anticipated greater outcomes in that spot. But then again by lowering the GPU operating voltage and frequency you may possibly be ready to get far better energy efficiency without actually loosing any functionality and this is a have to if you are mining Ethereum&#8230 that is if you are truly able to downclock the GPU, a modified video BIOS with the right settings may possibly be a very good resolution to that issue, but that would also need some time.

We are going to be doing some more exams to see if things with the sgminer crashing on most algorithms and seeking for other alternatives to increase the energy utilization when mining Ethereum and so on., so keep tuned for far more data about the RX 480. For the moment nonetheless we are not quite impressed by the new AMD Radeon RX 480, although a non-reference layout with some added tweaking might be capable to alter our viewpoint.

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