The Perfect Gigabyte R9 270 CGMiner settings

[xbudahx]

I've been playing with these cards for quite a while, tracking every change in config and it's affect and I think I've found the perfect CGMiner settings.


These settings get me 480 khash/s

So here are my settings, cards are running at low temps, reject rate is low and like I said 480 khash/s per card.

For under $200 a card, I'm quite pleased.

"api-listen" : true,
"intensity" : "19",
"vectors" : "1",
"worksize" : "256",
"kernel" : "scrypt",
"auto-fan" : true,
"temp-cutoff" : "85",
"temp-overheat" : "75",
"temp-target" : "70",
"expiry" : "10",
"gpu-dyninterval" : "7",
"log" : "5",
"queue" : "0",
"retry-pause" : "5",
"scan-time" : "5",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"shaders" : "1792",
"thread-concurrency" : "16000",
"gpu-thread" : "1",
"gpu-engine" : "1125",
"sharethreads" : "32",
"lookup-gap" : "2",
"gpu-powertune" : "20",
"gpu-memclock" : "1500"

I hope this helps someone, cheers!

[SirGeekalot]

hmm..

i have the asus variant and it only has 1280 shaders and if i put the memclock over 1450 the system locks up.

very strange.

[dangerdave]

hmm..

i have the asus variant and it only has 1280 shaders and if i put the memclock over 1450 the system locks up.

very strange.

Im also using the asus 270oc, what settings are you using at what speeds/temps?

[SirGeekalot]

my box is currently in the living in a case while i test it so temps are a little high.

i undervolted the bios to 1.1v and i use the setting below.

"xintensity" : "4",
"gpu-threads" : "2",
"worksize" : "256",
"gpu-engine" : "1060",
"thread-concurrency" : "5121",
"gpu-fan" : "0-90",
"gpu-memclock" : "1250",
"gpu-powertune" : "20",
"temp-cutoff" : "90",
"temp-overheat" : "80",
"temp-target" : "75",
"auto-fan" : true,
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"monitor" : "cat >> /home/cgminer.log",
"kernel" : "alexkarnew",
"kernel-path" : "/opt/miners/sgminer/kernel"



credit goes to http://www.reddit.com/r/litecoinmining/comments/1wc5th/bounty_undervolting_gigabyte_r9_270_bios/cf0y97g for the idea.. i just weaked it a litle for my own use.

[xbudahx]

my box is currently in the living in a case while i test it so temps are a little high.

i undervolted the bios to 1.1v and i use the setting below.

"xintensity" : "4",
"gpu-threads" : "2",
"worksize" : "256",
"gpu-engine" : "1060",
"thread-concurrency" : "5121",
"gpu-fan" : "0-90",
"gpu-memclock" : "1250",
"gpu-powertune" : "20",
"temp-cutoff" : "90",
"temp-overheat" : "80",
"temp-target" : "75",
"auto-fan" : true,
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"monitor" : "cat >> /home/cgminer.log",
"kernel" : "alexkarnew",
"kernel-path" : "/opt/miners/sgminer/kernel"



credit goes to http://www.reddit.com/r/litecoinmining/comments/1wc5th/bounty_undervolting_gigabyte_r9_270_bios/cf0y97g for the idea.. i just weaked it a litle for my own use.

How much power does undervolting save? I'm running the cards harder, is that a risk?

Still going strong at 480 though.

[SirGeekalot]

i haven't managed to get a Power meter onto my rig yet, i'm waiting for the Belkin Wemo insight to be launched so i can do it remotely.. my rig is in my loft so its not very easy to get up and mess with or check the wattage.

I've never been able to get my machine up that high. every time i put the Memclock over 1400 it hangs on me. i thought it might have been because i was using Linux but you're using the same cards and OS as me, so who knows..

also, for the addition of £70 a year to my total, id rather have my cards last that little bit longer. 

[IncognitoBurritto]

Does anyone know offhand how much juice these pull (W) when hashing? Be nice to make a card comparison chart or something. Really hard to find the info.

[IncognitoBurritto]

Think I found it there on amazon somewhere. Thanks man!!! #nohomo

[Dabs]

shaders are not used if you have thread concurrency, so you can safely omit that line.

[urbanhacker]

The 270x settings I posted here may perform just as well on the 270. Donno, give it a crack.

http://forums.overclockers.co.uk/showpost.php?p=25916656&postcount=55

[sikman]

Gigabyte 270 ( Non-x) 490Kh under Windows 8 with Sgminer 4.0.0

-w 256 -I 19 -g 1 --thread-concurrency 21568 --gpu-fan 80 --gpu-engine 1150 --gpu-memclock 1500 --lookup-gap 2

[xbudahx]

Gigabyte 270 ( Non-x) 490Kh under Windows 8 with Sgminer 4.0.0

-w 256 -I 19 -g 1 --thread-concurrency 21568 --gpu-fan 80 --gpu-engine 1150 --gpu-memclock 1500 --lookup-gap 2

Thanks, I am also at 490 now using those intensity and gpu values, will run for a while and see if it's stable and what the temps are but you might have a winner there.

[Wipeout2097]

500 Kh/s  with sgminer 4.1.0


"xintensity" : "4",
"kernel" : "zuikkis",
"thread-concurrency" : "8193",
"gpu-threads" : "2",
"gpu-engine" : "1160",
"gpu-memclock" : "1500",

[Dabs]

Someone tried gpu engine 1170... But stability is important.

[Wolf_Pack]

500 Kh/s  with sgminer 4.1.0


"xintensity" : "4",
"kernel" : "zuikkis",
"thread-concurrency" : "8193",
"gpu-threads" : "2",
"gpu-engine" : "1160",
"gpu-memclock" : "1500",

Is this all you have in your config? It only gave me 360 kh.

[silvetti]

500 Kh/s  with sgminer 4.1.0


"xintensity" : "4",
"kernel" : "zuikkis",
"thread-concurrency" : "8193",
"gpu-threads" : "2",
"gpu-engine" : "1160",
"gpu-memclock" : "1500",

Is this all you have in your config? It only gave me 360 kh.

I'm also curious.

[Wipeout2097]

{
"pools" : [
   {
      "url" : "stratum+tcp://stratum.coinex.pw:9024",
      "user" : "Wipeout2097.1",
      "pass" : "x"
   }
]
,
"xintensity" : "4",
"worksize" : "256",
"kernel" : "zuikkis",
"lookup-gap" : "2",
"thread-concurrency" : "8193",
"shaders" : "1280",
"gpu-engine" : "1160",
"gpu-fan" : "80-100",
"gpu-memclock" : "1500",
"gpu-memdiff" : "0",
"gpu-powertune" : "20",
"gpu-vddc" : "1.05",
"gpu-threads": "2",
"temp-cutoff" : "72",
"temp-overheat" : "69",
"temp-target" : "66",
"api-listen" : true,
"api-mcast-port" : "4028",
"api-port" : "4028",
"auto-fan" : true,
"expiry" : "15",
"gpu-dyninterval" : "10",
"gpu-platform" : "0",
"log" : "5",
"no-pool-disable" : true,
"queue" : "0",
"scan-time" : "15",
"tcp-keepalive" : "60",
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin",
"api-allow" : "W:127.0.0.1,W:192.168.1.100"
}

[xbudahx]

Gigabyte 270 ( Non-x) 490Kh under Windows 8 with Sgminer 4.0.0

-w 256 -I 19 -g 1 --thread-concurrency 21568 --gpu-fan 80 --gpu-engine 1150 --gpu-memclock 1500 --lookup-gap 2

Thanks, I am also at 490 now using those intensity and gpu values, will run for a while and see if it's stable and what the temps are but you might have a winner there.

I found this to be unstable, reverted back to OP settings.

[Wolf_Pack]

{
"pools" : [
   {
      "url" : "stratum+tcp://stratum.coinex.pw:9024",
      "user" : "Wipeout2097.1",
      "pass" : "x"
   }
]
,
"xintensity" : "4",
"worksize" : "256",
"kernel" : "zuikkis",
"lookup-gap" : "2",
"thread-concurrency" : "8193",
"shaders" : "1280",
"gpu-engine" : "1160",
"gpu-fan" : "80-100",
"gpu-memclock" : "1500",
"gpu-memdiff" : "0",
"gpu-powertune" : "20",
"gpu-vddc" : "1.05",
"gpu-threads": "2",
"temp-cutoff" : "72",
"temp-overheat" : "69",
"temp-target" : "66",
"api-listen" : true,
"api-mcast-port" : "4028",
"api-port" : "4028",
"auto-fan" : true,
"expiry" : "15",
"gpu-dyninterval" : "10",
"gpu-platform" : "0",
"log" : "5",
"no-pool-disable" : true,
"queue" : "0",
"scan-time" : "15",
"tcp-keepalive" : "60",
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin",
"api-allow" : "W:127.0.0.1,W:192.168.1.100"
}

Thanks. I'll give it a try.

[Dabs]

Running for about 5 to 6 hours already.

Although I'm using a Sapphire 270X, not a Gigabyte 270.