Litecoin GPU mining with AMD R9 290 and R9 290X – Sweet Spot for 1000KHash/sec

Litecoin GPU mining with AMD R9 290 and R9 290X – Sweet Spot for 1000KHash/sec

Litecoin-GPU-mining-with-AMD-R9-290-and-R9-290X-Sweet-Spot-for-1000KHash

With the recent price of Litecoin skyrocketed 400%, many have begun showing interest in mining. The most popular GPU being the AMD Radeon 7950, well known for its high hash per watt ratio. The other day i went to shop around and found out that most of IT providers have ran out of stock on Radeon HD 7950. Found one or two units from small vendors but the price itself have spiked for at least 20 percent. That being said, I got hold of another GPU from AMD, that is Radeon R9 290.

 

AMD has increased the par with two new releases of the Radeon R9 290 and Radeon R9 290X which boasts even higher hash per watt ratio than the reigning HD Radeon 7950. Let me show you some rough figures (please keep in mind that these are rough estimations with some variance, but will give you an idea of the difference between these few GPU) :

 

The HD 7950 was a great card for mining Litecoin, but with the new kids introduced, the attention will be shifted to the R9 290 and R9 290X. But do keep in mind that R9 cards are relatively loud and runs pretty hot. That being said, let’s look at the sweet spot for the R9 cards for mining Litecoin.

 

R9 290 @ 900KHash/sec

CGminer.conf

{
“pools” : [
{
“url” : “stratum+tcp://coinotron.com:3334”,
“user” : “<USER>.<WORKER>”,
“pass” : “<PASS>”
},
{
“url” : “stratum+tcp://stratum.give-me-ltc.com:3333”,
“user” : “<USER>.<WORKER>”,
“pass” : “<PASS>”
}
],

“intensity” : “20”,
“vectors” : “1”,
“worksize” : “256”,
“lookup-gap” : “2”,
“thread-concurrency” : “32765”,
“gpu-engine” : “1000”,
“gpu-fan” : “40-100”,
“gpu-memclock” : “1350”,
“gpu-powertune” : “20”,
“temp-cutoff” : “99”,
“temp-overheat” : “95”,
“temp-target” : “90”,

“api-port” : “4028”,
“expiry” : “120”,
“failover-only” : true,
“gpu-threads” : “1”,

“log” : “5”,
“queue” : “1”,
“scan-time” : “60”,
“temp-hysteresis” : “3”,

“scrypt” : true,
“kernel” : “scrypt”,
“kernel-path” : “/usr/local/bin”
}

 

Updated: MSI & Sapphire R9 290 @ 940KHash/sec (thanks to our reader for sharing his configuration – Adrian)

CGminer.conf

{
“pools” : [
{
“url” : “stratum+tcp://coinotron.com:3334”,
“user” : “<USER>.<WORKER>”,
“pass” : “<PASS>”
},
{
“url” : “stratum+tcp://stratum.give-me-ltc.com:3333”,
“user” : “<USER>.<WORKER>”,
“pass” : “<PASS>”
}
],

“intensity” : “20”,
“vectors” : “1”,
“worksize” : “256”,
“lookup-gap” : “2”,
“thread-concurrency” : “32765”,
“gpu-engine” : “1075”,
“gpu-fan” : “40-100”,
“gpu-memclock” : “1470”,
“gpu-powertune” : “20”,
“temp-cutoff” : “99”,
“temp-overheat” : “95”,
“temp-target” : “90”,

“api-port” : “4028”,
“expiry” : “120”,
“failover-only” : true,
“gpu-threads” : “1”,

“log” : “5”,
“queue” : “1”,
“scan-time” : “60”,
“temp-hysteresis” : “3”,

“scrypt” : true,
“kernel” : “scrypt”,
“kernel-path” : “/usr/local/bin”
}

Basically, the settings is similar to the above except the clock speed and memory speed. It will be a good starting point for those with the same cards. But do keep in mind that every card with a different combination of hardware and software will result in a slight difference in output. So that i would suggest to take this as a base and keep tweaking from there.

R9 290X @ 1000KHash/sec

CGminer.conf

{
“pools” : [
{
“url” : “stratum+tcp://coinotron.com:3334”,
“user” : “<USER>.<WORKER>”,
“pass” : “<PASS>”
},
{
“url” : “stratum+tcp://stratum.give-me-ltc.com:3333”,
“user” : “<USER>.<WORKER>”,
“pass” : “<PASS>”
}
],

“intensity” : “20”,
“vectors” : “1”,
“worksize” : “256”,
“lookup-gap” : “2”,
“thread-concurrency” : “33792”,
“gpu-engine” : “1025”,
“gpu-fan” : “40-100”,
“gpu-memclock” : “1350”,
“gpu-powertune” : “20”,
“temp-cutoff” : “99”,
“temp-overheat” : “95”,
“temp-target” : “90”,

“api-port” : “4028”,
“expiry” : “120”,
“failover-only” : true,
“gpu-threads” : “1”,

“log” : “5”,
“queue” : “1”,
“scan-time” : “60”,
“temp-hysteresis” : “3”,

“scrypt” : true,
“kernel” : “scrypt”,
“kernel-path” : “/usr/local/bin”
}

Basically,  the two R9 will have very similar settings except for the thread-concurrency and gpu-engine. Another area worth tweaking would be the GPU voltages. Most of the time, they run much better at lower voltage than stock. The reason being that you will be running at 100% GPU load all the time, and if it is getting too hot, the higher hashrate could not be maintained. I will look at voltage figures between 1.110V to 1.150V.

 

What about profitability in using these cards for mining? With the current price of Litecoin, the R9 290 could reach break even point in a little less than a month. That might sound crazy, but even with increasing difficulty level, it’s not impossible to break even before the beginning of next year. No matter what, always remember the rule of thumb, only invest in what you can afford to lose.

 

Update 18/1: Configuration of MSI and Sapphire R9 290 @ 940KHash/sec from our reader, Adrian. Appreciate your taking the time to write to us.


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