Sapphire R9 280X Vapor-X OC mining settings

[forgotmypants]

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.

[ellave]

Picked up one of these today & having a hard time with it so far, its also voltage locked which is a bummer.

Currently I get 550 ish without tweaking, confident I should get it up to the 700's so will post back my config when I do

[mbeezy84]

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.

You should be able to get at least 735-740. Try changing TC to 8191 and gpu engine to 1045 or 1050.

Just mess around with the values of gpu engine and TC. You'll find a sweet spot.

[hownowbrowncow]

You could try increasing intensity to 16 or 17. I've seen some go as high as 19 and even 20.

[unclejones]

I have my intensity set to 20 on a r9 290, non x.

[TheHashBuster]

I'm getting 735K on my 280x Toxic with this settings:

-I 13 -g 2 -w 256 --gpu-memclock 1500 --gpu-engine 1080 --gpu-powertune 20 --thread-concurrency 8192 --auto-fan --gpu-fan 30-75 --temp-cutoff 90 --temp-overheat 85 --temp-target 70

Hope it helps

[badalien]

Hi Guys, i get four Sapphire R9 280X Vapor-X OC, the hasrate is very poor, only 550 mhs per card. I have tested the cards in two different Mobos with the same result. With two MSI R9 280x i get 720MHs per card.  Have anybody a hint for me.

[topnetdeal]

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)

[jedarius]

I'm running these settings:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o URL -u USERNAME -p PASSWORD --lookup-gap 2 --thread-concurrency 8193 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 30-85 --temp-cutoff 90 --temp-overheat 85 --temp-target 70 --gpu-memclock 1500 --gpu-engine 1052 --gpu-powertune -20

Don't remember where I got them exactly...I know they are a bit quirky, but I was able to consistently get ~730 Kh/s with these settings.  Good luck.

[transposon]

These are the core/memory settings that have worked for me for the various 280x s ive purchased. 

1085/1500

1035/1500

1050/1500

My cards' performance have varied.  The older cards I got could hit 750 kh/s while all the newer ones can only get around 725kh/s.

[badalien]

its so strange, i install trixx and activate disable ULPS on the Win7 system and play with the other settings, i see three cards runs with 715khs and the card with monitor con runs with 560khs. When all cards run with full power they will crash after a view minutes, so i reduced the GPU freq. and VDDV  a litte bit with the result they hash now stable with 705khs.

[grendel25]

I just ordered a 280X.  My first card actually capable of some high hashrate.  So excited.  Want to buy about 10 more but not at $300.  I got 'lucky' i suppose in this market and have one on order for $310.  Wishing I had a pulse around black friday ><

anyways... this website is a really good reference for some ideas on settings.. but also on configuration:  https://litecoin.info/Mining_hardware_comparison

Give you some idea for miner configs and also how you setup your system... for example, method of cooling, operating system and such

here's to falling video card prices in early 2014

[blacklig]

These are the core/memory settings that have worked for me for the various 280x s ive purchased. 

1085/1500

1035/1500

1050/1500

My cards' performance have varied.  The older cards I got could hit 750 kh/s while all the newer ones can only get around 725kh/s.

Thats nice.. I am running mine at 1049/1500 pushing 732 and another one is stable only at 1020 and pushing only 702 khs.. but as long as I even work on that PC, its very good, because hash rates dont fell much and PC is perfectly controlable.. way better than 7950 on I200 then you cant do anything on such PC

[grendel25]

I would be interested to know what your temps are at when doing these various overclocks.  The hotter it is the more noise and errors.  Cooling is critical to OC.  Whenyou look at the comparison charts, it's the folks with great cooling that are hitting really good kh/s.  But I'm not sure how much other things like cpu mfr and OS may play in as well.

people were getting around 800 khs with 1150/1600 overclock on a 280x

[Varens]

Check that site https://litecoin.info/Mining_hardware_comparison and "Notes (OS/TEMPS/DRIVERS/HARDWARE/FIRMWARE)" about your card version - what conf to do for make xx kh/s.

[sunnyverv]

I owe two 280x cards, one xfx one from gigabyte. And i would recommend to overclock them too heavy. I have them stable at 700 KHs. I know it is possible to have them running higher but with normal settings they will life longer. My settings are just --thread-concurrency 8192 -I 13 -g 2 -w 256 --gpu-fan 85 --lookup-gap 2 --gpu-engine 1030 --gpu-memclock 1500 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

[pengoau]

If you have video BIOS Version: 015.041.000.000.000000, you are out of luck as it has an interal temperature limit that throttles the card if it exceeds 72c. Typically you'll have a problem in multi gpu configs. My card gets 700 khsec in a single config but hashes poorly in a multigpu config (less than and no better than 550khsec).


Flashing the card to an earlier bios say 015.039 does not help as it results in the card not posting. Cards with this bios version don't have this problem. Maybe dumping the existing 015.041 and editing it and reflashing may help? This is just a guess. Also pressing the sapphire button on the card so it operates the 7970 bios may help, I haven't tried yet (will give this a shot tho).

After investigations its due to the vrms running really hot (over 100c). Sapphire has been contacted but won't fix it and says the temps are acceptable :|

To fix it yourself, you may swap it for a toxic edition which has heatsinks on the vrms vs just heatpads that the vaporx uses.

I'm going to try increase the TDP e.g powertune to 30 to see if this helps with hashing performance.

Sorry to be the bearer of bad news if you aren't aware of this.

[dougtpx]

I am mining litecoins with 5 Sapphire R9 280X Vapor-X cards and the following bat file:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o URL -u USERNAME -p PASSWORD --lookup-gap 2 --thread-concurrency 8192 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 30-85 --temp-cutoff 95 --temp-overheat 85 --temp-target 70 --gpu-memclock 1500 --gpu-engine 1045 --gpu-powertune -20

The rig will run file for 2 or 3 hours and then crash.

Any suggestions for finding and fixing the problem?

[grendel25]

What happens when it crashes?  Does the whole computer shutdown?  is there a warning before it shuts down?  What are your temperatures when it crashes?  Is the card directly connected to the mobo or are you using risers?

[thankyou]

As @pengoau suggested with the newer spec Sapphire R9 280x Vapor-X models have a newer bios version; you can try undervolting the cards and see how your performance goes. I'm testing a 4x Sapphire R9 280x Vapor-X rig and it's hashrate is 710-20KHs that are undervolted to 1.093V with default settings besides core clock @ 1030 and thread concurrency @ 8192.

Also, I've been in touch with Sapphire Support trying to find a solution. For anyone who owns Sapphire products or would like to support, please sign an Online Petition to have Sapphire (Althon Micro Inc) address the situation with a bios update.

Google Form Sapphire R9 280x Performance Issue Online Petition: http://goo.gl/F6kSWj

Thanks in advance.

@dougtpx in addition to @grendel25's questions.. Let us know about your PSU (and configuration).. Try and isolate if it is a supply of power issue by either trying with 2 GPUs; 3 GPUs; 4 GPUs; Differing PSU PCIe power plug assignment (T configuration).