SAPPHIRE R9 290 OC TRI-X 4 GB GDDR5 only 849khash

[dobrystudio]

i have this:
https://i.imgur.com/TQdGJca.png

My settings:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
sgminer.exe -o stratum+tcp://pool-eu.hash.so:1337/ -u xxx.xx -p xxx  -I 20 -g 1 -w 256 --thread-concurrency 24500 --gpu-engine 947 --gpu-memclock 1250 --gpu-powertune 25 --gpu-fan 95

Can i get better hashrate? This is a uefi r9 290 tr-x max gpu engne is 1000 and memclock 1300
When i change to 1350 windows is crach

asrcock h81 BTC
ram 16gb
caleron 2,7ghz
2x corsair 1000 watt gold

[grippy54]

You should be able to get a bit more out of them. I don't have that exact card, but my Gigabyte R9 290 does 880+. It was higher, but I turned the intensity down a bit to curb rejects.

You have 290's so you can probably set it to auto fan. They have their own fan speed controller and can do a good job adjusting it itself. You also have some pretty high rejects. You should be able to get them lower with some tuning. I'm at 0.3% now, but it can also depend on your pool, so check to see what's normal there.

Take some time and adjust one thing at a time and see the result. Try MSI Afterburner to tweak card settings in real time and watch the khs go up or down. Try going up in small increments. Also try going down. I know it sounds unintuitive, but under clocking works sometimes. You should be able to get the perfect setup in a couple hours.

For thread concurrency, try (n * shaders) +- 1. In my case, (12 * 2560) -1 = 30719. Don't ask why the -1. I have no idea, but it gives better khs. Give it a try.

Here's my config if it helps.

   "failover-only": true,
   "xintensity": "500",
   "vectors": "1",
   "worksize": "256",
   "lookup-gap": "2",
   "thread-concurrency": "30719",
   "gpu-engine": "1002",
   "gpu-memclock": "1500",
   "gpu-powertune": "20",
   "gpu-threads": "1",
   "auto-fan": true,
   "temp-cutoff": "90",
   "temp-overheat": "85",
   "temp-target": "80",
   "queue": "0",
   "scan-time": "1",
   "expiry": "120",
   "api-port": "4028",
   "log": "5",
   "temp-hysteresis": "3",
   "kernel-path": "/usr/local/bin"

[Starscream]

"only 868 KH/s" - that's not so bad considering your power consumption should be (that was in my case) at around 250w per card, which gives it a 3.47 KH / watt ratio! Granted, you need to undervolt, but yeah, the potential is there.

I get 900KH/s now with 275w (3.27 KH / watt) per card with 1015/1250, 20481 TC 1.07v. Try it out.

FYI, your clock settings will vary to get optimal settings if you got Elpida or HynixMFR memory (I got HynixAFR).

[dobrystudio]

You should be able to get a bit more out of them. I don't have that exact card, but my Gigabyte R9 290 does 880+. It was higher, but I turned the intensity down a bit to curb rejects.

You have 290's so you can probably set it to auto fan. They have their own fan speed controller and can do a good job adjusting it itself. You also have some pretty high rejects. You should be able to get them lower with some tuning. I'm at 0.3% now, but it can also depend on your pool, so check to see what's normal there.

Take some time and adjust one thing at a time and see the result. Try MSI Afterburner to tweak card settings in real time and watch the khs go up or down. Try going up in small increments. Also try going down. I know it sounds unintuitive, but under clocking works sometimes. You should be able to get the perfect setup in a couple hours.

For thread concurrency, try (n * shaders) +- 1. In my case, (12 * 2560) -1 = 30719. Don't ask why the -1. I have no idea, but it gives better khs. Give it a try.

Here's my config if it helps.

   "failover-only": true,
   "xintensity": "500",
   "vectors": "1",
   "worksize": "256",
   "lookup-gap": "2",
   "thread-concurrency": "30719",
   "gpu-engine": "1002",
   "gpu-memclock": "1500",
   "gpu-powertune": "20",
   "gpu-threads": "1",
   "auto-fan": true,
   "temp-cutoff": "90",
   "temp-overheat": "85",
   "temp-target": "80",
   "queue": "0",
   "scan-time": "1",
   "expiry": "120",
   "api-port": "4028",
   "log": "5",
   "temp-hysteresis": "3",
   "kernel-path": "/usr/local/bin"

i can't change memclock to 1500 max in my card's it 1300 when i try more my rig freeze

[grippy54]

I would mess with the gpu and mem speeds once everything else is dialed in on your config. Just them to stock first. Once you max it out, then tweak the clocks with MSI Afterburner like I described above. Every card is different, so my config may not be optimal for you.