Archive for the ‘Mining Hardware’ Category

asrock-h81-pro-btc-motherboard

With the recent spike of interest in GPU mining thanks mostly to Ether a lot of people are getting back to building GPU mining rigs using more up-to date hardware much like back in the days of the Litecoin and prior to that of the Bitcoin mining boom. Nowadays it is much easier and you have way more options for different motherboards that have the option to work with 4, 5 or even 6 video cards by utilizing not only full width x16 PCI-E slots, but also the multiple available PCI-Express x1 sots with the help of extenders. We have prepared a list of all possible candidates for use as motherboards for multi-GPU mining rigs 4-6 GPU mining from ASRock, the company that has made its name among miners thanks to their dedicated BTC-branded motherboards made especially for GPU mining rigs. Other motherboard manufacturers such as Asus, Gigabyte, MSI and others also have products that might do for a multi-GPU mining rigs, but these are not dedicated for such use and this may cause some problems.

Nowadays ASRock has a lot of BTC-branded motherboards that are designed for use as multi-GPU mining rigs for different processor platforms from both AMD and Intel. There are also quite a few more non-BTC named motherboards that could do the job perfectly and some that might also work fine, but some of the PCI-E slots might not be available for GPU use under specific conditions, so you need to be careful. What is important for a motherboard that will be used with multiple GPUs for mining is for the motherboard to have enough PCI-E slots, to be affordable in terms of price as you don’t need extras targeted at gamers or enthusiasts and to be able to be used with cheap dual-core CPUs. ASRock’s BTC-branded motherboards do come with some extra features that may help by minimizing possible issues such as the fact that they have been designed to provide extra power to GPUs and have dedicated connectors for additional power from the PSU. They do not share PCI-E lanes with external hardware such as network controllers, audio cards, storage controllers or USB controllers that may cause problems if you want to use all of the available PCI-Express lanes for video cards and so on. These motherboards are offering just basic features, but ensure stable and problem free operation even under not so good conditions that often are available with GPU mining rigs that generate a lot of heat an may not be optimally cooled.

The list below covers all possibly suitable ASRock motherboards for 4-6 GPU mining rigs, you should choose to go for the models that do have the BTC in their model nae as they will most likely be the best choice. The next are Anniversary and Pro series and then the others if you have no other choice, but with such a big list you should have a lot of options. Unfortunately the only 6 GPU capable motherboards are for Intel socket 1155 and 1150 CPUs, still no affordable options for the latest Intel 1151 platforms or AMD FM2 sockets. Sure the company has some high-end enthusiast level products that can do 6 GPUs, but these are pointless for use as multi-GPU mining rigs as they will add to much to the price of the setup and you will be better off spending the extra cash for more video cards or more powerful models. After all you need to find the right balance that includes cheap motherboard, cheap processor and powerful GPUs along with some PCI-E extenders (powered preferably) with PCI Express x1-x16 USB 3.0 Extenders being the best choice if available.

Intel Socket 1151 ASRock Motherboards

5 cards:
ASRock B150A-X1
ASRock B150 Pro4D3
ASRock B150 Pro43.1
ASRock H170A-X1
ASRock H170 Pro4
ASRock H170 Pro4D3
ASRock H170 Pro4S

4 cards:
ASRock B150 Combo
ASRock B150M Pro4S
ASRock B150M Pro4
ASRock Q170M vPro
ASRock H170 Combo
ASRock H170M Pro4S
ASRock H170M Pro4

Intel Socket 1150 ASRock Motherboards

6 cards:
ASRock H81 Pro BTC
ASRock H81 Pro-G
ASRock B85 Anniversary
ASRock H97 Anniversary

4 cards:
ASRock H81M BTC
ASRock H81M-G
ASRock B85M BTC
ASRock B85 Pro4
ASRock H87 Pro4

Intel Socket 1155 ASRock Motherboards

6 cards:
ASRock H61 Pro BTC
ASRock H61 Pro
ASRock H61DEL

4 cards:
ASRock H67DE3
ASRock P67 Pro
ASRock P67 Pro3 SE
ASRock P75 Pro3

AMD FM2/FM2+ ASRock Motherboards

5 cards:
ASRock FM2A58+ BTC
ASRock FM2A58 Pro+
ASRock FM2A78 Pro3+
ASRock FM2A88X+ BTC
ASRock FM2A88X Pro+ R2.0
ASRock FM2A88X Pro+
ASRock FM2A88X Pro3+

4 cards:
ASRock FM2A58M+ BTC
ASRock FM2A78 Pro4+
ASRock FM2A88M+ BTC

kncminer-titan-scrypt-asic-miner

The KnCminer Titan Scrypt ASIC is still probably the fastest and most power efficient miner for Scrypt coins out there, but at the same time it is also one of the most problematic one to use and run. There are hardware issues resulting in dying cores and problems with the DCDC power modules, the software is also far from perfect, even though there are modifications over the last official firmware such as GenTarkin’s Custom KNC Titan Scrypt ASIC Firmware, there is still more to be desired. One of the things that is quite annoying is that the Load Balance pool strategy in the official Firmware 2.0 for the Titan is not working, so you are essentially left only with the Failover option.

Even if you run just one Titan cube you are still getting quite significant hashrate and while this is fine if you are mining for high-difficulty coins such as Litecoin for example, it is not for low difficulty coins that may have just a couple of MHS total network hashrate. Throwing your full KnC Titan hashrate at a coin with low difficulty and total network hashrate will simply increase the difficulty in very short period of time (depending on the difficulty adjustment algorithm of the coin) making it pointless to be mined. What you would want to have for low difficulty Scrypt crypto coins is to be able to split your Titan hashrate between multiple cons on a single multipool or between multiple mining pools in order to maximize your mining profit without bumping the difficulty to a level making it unprofitable for a given coin to be mined.

gentarkin-balance-pool-strategy

GenTarkin’s custom firmware has implemented support for the alternative Balance strategy in the web interface, though it is essentially something supported by the bfgminer as an alternative to the Load Balance pool strategy. Considering that the Load Balance strategy is not working properly and you cannot dedicate lets say 10% to one coin, 30% for another and the remaining 60% to a third one, you might at least try the equal spreading of hshrate that the Balance strategy should provide. The Balance strategy should split the hashrate in equal parts between the multiple defined pools, so if you have 4 pools the total KnC Titan hashrate should be equally split between them with about 25% for each. The Balance pool strategy works just fine not only on the custom GenTarkin firmware, but also on the stock Titan 2.0 firmware as both rely on the bfgminer 5.1.0 and the miner provides the actual functionality, you just need to configure it.

{
"pools": [
{
"url": "hash-to-coins.com:4444",
"user": "titan.1",
"pass": "d=512"
},
{
"url": "hash-to-coins.com:4444",
"user": "titan.2",
"pass": "d=512"
},
{
"url": "hash-to-coins.com:4444",
"user": "titan.3",
"pass": "d=512"
},
{
"url": "hash-to-coins.com:4444",
"user": "titan.4",
"pass": "d=512"
}
],
"scrypt-n": 10,
"balance": true
}

With the stock firmware you will have to go to the Manual edit mode and edit the pool configuration file by hand, what you need to essentially do is add the option "balance": true at the end of the configuration file to tell bfgminer to use the Balance pool strategy. Above is an example configuration file with four different coins and Balance pool strategy that should equally split the total hashrate to about 25% for each of the coins. GenTakin’s latest custom firmware adds support for the Balance strategy in the Normal edit mode as well, making it a bit easier for users, but the end result is the same. As we have said already, the Balance pool strategy will work just fine with the latest official Titan 2.0 firmware, so you can try it even without a modified firmware. However custom firmwares such as GenTarkin’s add a lot of other and more useful features than just making some of the things that do not work properly in the official firmware more user friendly.

what-to-mine-x11

The first batch of 50 units of the first on the market iBeLink DM384M X11 ASIC miner were shipped at the beginning of this month and everyone that has pre-ordered is probably quite happy at the moment. The profitability is quite good with selling X11 hashrate at NiceHash still the most profitable choice at the moment, based on our test of a unit we have purchased we can say that the miners are pretty good, even if they do lack some extra features both hardware wise and on the software side. If you re interested in the iBeLink DM384M X11 ASIC miner and you have missed our posts about different aspects of the device that we have published already, then you might want to check them out.

ibelink-dm384m-2

It seems that the company making the iBeLink DM384M miners does not have a very large production capacity and they need some time to make another batch of miners (and probably money from the sales of the first batch). The answer they give at the moment when more units are expected to be available is “we expect to have next batch around mid of May“, definitely a good news for first batch owners and not so good for people that will want to purchase an X11 ASIC now. This low number of devices available however is generally good for the X11 coins as they will not be overwhelmed by a very big wave of new hashrate pouring in pushing out the GPU miners that mine X11. Actually a lot of the GPU miners are currently switching to Ethereum mining because of the better profitability it offers, so the X11 ASIC miners could fill the gap and offer enough supply to cover the hashrate demand. We are looking at at least a few more months before mining X11 with a GPU might become pointless, unless of course we see a bunch of other companies releasing more X11 ASICs on the market. It seems that this is not going to happen in the next few months, so don’t be in a hurry to write out the X11 algorithm as ASIC only yet…


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