Sapphire R9 280X Vapor-X OC mining settings

[pengoau]

https://litecointalk.org/index.php?topic=10313.45

Have a read, tell me if my findings help you.

[Superdaan]

I have been getting about 745kh/s per GPU with three of these cards in a rig.
My settings are similar to most people apart from the gpu engine, which i've clocked to 1100:

-I 13 -g 2 -w 256 --lookup-gap 2 --thread-concurrency 8192 --gpu-engine 1100 --gpu-memclock 1500 --temp-target 70 --auto-fan

My rig's been extremely stable since I installed it about two weeks ago, however that was with two cards, I've only recently installed the third and am planning to add a 4th GPU (a 7950 this time). Temp's have been around 70c so far, an zero HW errors.

I'm just wondering about my gpu engine clock setting of 1100, as I don't really see anyone else posting such a high OC value. Would it be considered too high a risk to clock it that far? (factory setting is 1000)

[pengoau]

Try reading the thread I linked to, contains a lot of good info (including settings, clocks etc to try).

[RussIT99]

on the newer cards with the new bios has the hardware changed ie new vrms or do you think saphire were getting to many failures returned due to blown vrms so they made the new restricted bios?

[pengoau]

Problems seems to be with the vram, if you use Elpida you may or not have a problem as its cheaper (and not as good) vram than using Hynix (which is better).

Looks like they cut corners on the vram and possibly the vrms vs other oems to make a cheaper product.

[Nameless2013]

I just bought a R9 280X tri-x today, I had an Nvidia before. Sorry I'm really new at mining, every time I open Cgminer and run the the bat file, it closes automatically. I just downloaded the 3.9 version, which version should I use and which settings would work best?

Thanks!!

[pengoau]

3.7.2 is last to support gpus.

Settings, you gotta read this thread and see what works best for you. No one setting works well for all.

GL.

Use at your own risk: http://k-dev.net/cgminer/

[targosh]

Try : cgminer.exe --scrypt -I 20 -g 1 -w 256 --lookup-gap 2 --temp-target 75 --auto-fan --temp-cutoff 90 --thread-concurrency 24000 --gpu-engine 1050 --gpu-memclock 1500 (if You see HW Errors set -I 18-19)

Thanks to yours settings I'm getting 700-705 kH/s!!! Any other setting fail to break 700...
Can I know what bios version u have on those cards? Any problem with temperature? And have you checked VRM temp? One more (), what kH/s you obtain with that config?

[topnetdeal]

Sorry, I have not 280X, my card it's MSI R7970 Lightning, but that's the same what all card's R9 280X. With this settings I have above 750 kH/s and temp 74-75, without any problems.

[noegzit]

I got a few Sapphire R9 280X Dual X
Hashrate is generally between 700 and 730 KH/s

my settings
-I 13 -g 2 -w 256 --lookup-gap 2 --thread-concurrency 11200 --gpu-engine 1035 --gpu-memclock 1500

I never managed to get more than 650 KH/s with only 1 gpu-thread  (-g 1) even whith higher intensities (-I 20)

I'm using Trixx to handle the fans (custom graph with 100% around 70°C)  and to set the VVDC to 1.100
The low voltage gives no noticeable hashrate drops but lowers significantly the temperature.

[dougtpx]

I am running 5 Sapphire Vapor-X R9 280X cards with a Lepa G1600 PSU. When I try to run them fast I use -I 13,13,13,12,12 to ensure I do not pull over 1400 watts. I already tried switching out G1600 PSUs.

The cards will run for days at about 575 kh/s using the following settings:

 -I 13 -w 256 --auto-fan --gpu-memclock 1500 --gpu-engine 1080 --thread-concurrency 8192 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

The cards with -I 13 will run at about 720 kh/s with the following settings:

 --thread-concurrency 8192 -I 13,13,13,12,12 -g 2 --lookup-gap 2 -w 256 --auto-fan --auto-gpu --gpu-memclock 1500 --gpu-engine 1070

... but either the machine will simply reboot in a couple minutes, or I will start seeing messages stating that the display driver as crashed and recovered.

I have tried running each of the 5 cards at a time with the same result.

It appears that without " -g 2 --lookup-gap 2" the cards will be stable but slow and when I add ' -g 2 --lookup-gap 2" the cards will briefly run fast and then crash.

Any suggestions?  Sapphire tech support has been of no help.

[MoneyMorpheus]

I only have one vapor-x, in that rig there are 2 dual-x as well. This are my settings:

color 02
setx GPU_MAX_ALLOC_PERCENT 100
cgminer.exe --scrypt -u *.1 -p x --worksize 384,384,384 -I 13,13,13 -g 2 -v 1 --temp-target 75 --temp-cutoff 95 --gpu-engine 1090,1020,1070 --gpu-memclock 1500,1500,1500 --gpu-threads 2 --thread-concurrency 8192,8192,8192 --shaders 2048,2048,2048 --lookup-gap 2,2,2 -o stratum+tcp://pool1.us.multipool.us:7777 --failover-only -o stratum+tcp://pool1.eu.multipool.us:7777 -u *.1 -p x

I don't experience crashes with this settings. The vapor-x is the third one in the values. It runs at 739 k/h at 80c (though 35º outside temp...). The oced dual-x runs at 752 k/h 73º and the other at 690 94º. I need to get some risers for that rig so I can separate them and get better temps. But if I can cool them I don't see why all of them wouldn't run at 750+...

Notice the extra options and that I'm not using auto-fan or auto-gpu. Perhaps that is what is causing the crashing? I think also that the fan speed works automatically as well when you define your temp-target.


Feel free to tip 

[mattfox27]

Im trying this setup in the OP on a saphire 280x and it doesn't show my GPU temp, but if i just use a basic script the temp shows is there a command in the OP's config that stop the temp from showing?

EDIT:   I think i figured it out...im mining on linux and ssh'ing in so i had to change the SETX to EXPORT this is my config below im getting about 708 kh/s on a Sapphire R280x B4 Edition, does this seem about right or can i bump it up a little?

export DISPLAY=:0
export GPU_MAX_ALLOC_PERCENT=100
export GPU_USE_SYNC_OBJECTS=1
cd /home/matt/cgminer-3.7.2-x86_64-built
./cgminer --scrypt --intensity 13 -g 2 -w 256 --lookup-gap 2 --temp-target 70 --auto-fan --temp-cutoff 90 --thread-concurrency 8192 --gpu-engine 1000 --gpu-memclock 1500 -o tcp://pool.dogechain.info:3333  -u user.user -p password

[Pavlinius]

I'm accepting 0.05 BTC reward per GPU (280X only) for a setup producing at least 700KH/s and also undervolting a card. Team viewer or VNC is required. PM me if interested with details about your system.

[DK5000]

After days of problems with one of the cards overheating the following settings work best for me.
Especially since the cards are not cheap i think everyone would like to get the maximum from their card without exhausting it so it will last more then a few months

--scrypt --gpu-dyninterval 7 --shaders 2048 --vectors 1 --lookup-gap 2 --thread-concurrency 11200 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 30-75 --temp-cutoff 90 --temp-overheat 85 --temp-target 75 --gpu-memclock 1500 --gpu-engine 1080 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

*Some coins seem to work better with thread concurrency 8192.
*Powertune works better on -20 then it does on +20.

This info is free as it should be but donations/tips are always welcome 


--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
bitcoin@1Du9DFKtMFaVz4hFW1FGpRamcdYzkGTAFW
litecoin@LdNz7mvNn7Swyym8Uj53mMr87oJTpcmgtK
noblecoin@9URzRiG8eX7x9X1uZWXmDzmPqJS61Wfckp

[neoxxx]

how many kh/s

[CoinDaddy]

With the R9's do NOT use cgminer/bfgminer to adjust the voltage, fan speed, core or memory clocks.
Use a manual overclocking tool like Sapphire TRIXX(will let you set individual cards separately too), and set the fan at a high enough speed that it won't overheat at load.
CGMiner, when it's adjusting settings on the fly will go lower than it should, as it doesn't realize that the r9s can operate in the higher temp ranges.  I keep my 290 at 80 degrees with the fan set at a static 4400rpm.

Now use the scrypt mining tweak guide in your cgminer directory to tune it, and you should be good.

Also note, depending on what pool and what coin you are mining, it can sometimes make a 100kh difference, so choose a pool with good connection speeds.

That is all.

[ncedomir]

Hello,

I'm getting around 768-771 kH/s average

The best way to do this is to use conf file. You can find the conf file, called example.conf inside the cgminer dir. Edit it to look like this

{
"pools" : [
   {
      "url" : "YourPool",
      "user" : "YourWorker",
      "pass" : "YourPassword"
   }
],

"intensity" : "13",
"gpu-engine" : "1100",
"gpu-memclock" : "1770",
"gpu-fan" : "65",
"gpu-powertune" : "5",
"thread-concurrency" : "8913" ,
"shaders" : "2048" ,
"gpu-threads" : "2" ,
"auto-fan" : true,
"expiry" : "120",
"failover-only" : true,
"gpu-threads" : "2",
"log" : "5",
"queue" : "1",
"scan-time" : "30",
"temp-hysteresis" : "3",
"scrypt" : true,
"kernel-path" : "/usr/local/bin"
}


After this I will save it and name it YourConf.conf and start it over cmd. CD into the cgminer folder and type:
cgminer --config YourConf.conf

* If the temperature goes higher than 66C then change the "gpu-fan" option to 70 or more

I hope this helps a lot of you guys

[fouantre7]

Hi everyone. I have a R9 280x sapphire and i mine with 560 hr/s. Can you tell me if this is my best hash rate and if not how can i increase it? Thanks in advance!

[bl8cz]

Hi Guys,

I have recently bought a sapphire radeon r9 280x for litecoin mining.
I have tried several different cgminer settings and so far this is giving me the best results so far ( 700 kh/s )

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt --intensity 13 -g 2 -w 256 --lookup-gap 2 --temp-target 70 --auto-fan --temp-cutoff 90 --thread-concurrency 8192 --gpu-engine 1000 --gpu-memclock 1500 -o stratum+tcp://world.wemineltc.com:3333 -u workername -p password


Ive read people get 750 kh/s with this card, so if anyone can help me out with that?
I tried playing with thread concurrency and set it to 11200, also set memclock lower but none of those help.

Also i heard about undervolting the card, but i am not really confident doing that.

At first check your BIOS version via GPU-Z if it contains string similar to 15.41.XXXXXXXXXXV42, you're not the lucky one and bought one of the "throttling" series. On this card the VRM temperature is to high and you need to lower the voltage. Try voltage change to 1,089V (use Sapphire Trixx software not cgminer argument) and provide good cooling (temps 73'C or less). With this card you're able to do approx 740kH/s.

If you have other BIOS version, you can do up to 780kH/s with increasing GPU engine to 1130MHz (1150mV / 63'C in  my case).

The best params I've found are generally based on 8193 thread concurrency.

CGMiner settings:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
del *.bin
cgminer --scrypt --intensity 13 -g 2 -w 256 --lookup-gap 2 --temp-target 68 --auto-fan --temp-cutoff 90 --thread-concurrency 8193 --gpu-engine 1050 --gpu-memclock 1500 -o stratum+tcp://middlecoin.com:3333 -u 1ETYyETSWhkVxyj7HrBVEr5iAxAx2uSfTe -p x

 

If you're desperate, try PM me and I can try to solve it for you via remote desktop or similar SW.