New BIOS in Sapphire TOXIC r9 280x decrease hashrate ?

[ibinsad]

Im getting 750 KH/s with 70ºC temp on an AC + FAN room with this settings:

-I 13 -w 256 -g 2 --shaders 2048 --thread-concurrency 8192 --lookup-gap 2 --gpu-engine 1070 --gpu-memclock 1500 --gpu-powertune 20 --gpu-vddc 1.100 --auto-fan --temp-target 72 --expiry 1 --scan-time 1 --queue 0

I get 511 KH/s with these settings

Try sgminer

With this configuration

-xintensity 4 -w 64 -g 2 --shaders 2048 --thread-concurrency 8193 --lookup-gap 2 --gpu-engine 1030 --gpu-memclock 1500 --gpu-powertune 20 --gpu-vddc 1.100 --auto-fan --temp-target 67 --expiry 1 --scan-time 1 --queue 0

I get around 720kh/s
You can also try to undervolt to 1050 1046

[Amph]

What happens when you run max voltage and 1150 core and 1800men? Mine is stable at 810kh/s at those clocks..

your is  probably with the older bios

new toxic come with 43 bios version, and worst mem type

[MTJ151]

Oh damn....

I've now got 3 280x toxics. 2 I got a few months ago and run at 750kh/s.

And the other I just bought. Plugged it in and with the same settings its not even getting close to 750.... more like 650kh/s.

So disappointing... will probably send it back if I can't get any better results.

[ibinsad]

Oh damn....

I've now got 3 280x toxics. 2 I got a few months ago and run at 750kh/s.

And the other I just bought. Plugged it in and with the same settings its not even getting close to 750.... more like 650kh/s.

So disappointing... will probably send it back if I can't get any better results.

If you can send it back go with 290 tri x

I have same issue i can go no more than 720

[Monty-Python]

I have two Toxic, one with the 41 BIOS and ond with the 43. Both cards deliver the same hashrate - 750kh/s (TC 8192, core 1080, mem 1500 ). The Toxic with ne new BIOS version runs hotter though which makes it quite a task to keep it below 70 degrees...

So:
- decrease in hashrate: NO
- increasing temperature: YES

But maybe I am just lucky...

[MTJ151]

Thanks for replies...

I have actually pushed it up to 737kh/s now. Still not the solid 750kh/s I was getting from the other ones by a little bit but much better then 660 kh/s.

I had to up with TC by 1 to 8193 (from 8192).

Also clocked the engine a little slower to 1075 (from 1080).

Memory 1500 on all.

They are all running with VDDC 1.2 (have not risked changing bios on them yet to get lower).

I am considering sending it back for a 290 tri-x.... it is an option... the place I got it from offer 14 day money back guarantee.

[MTJ151]

Guys,

I have managed to get the new 280x toxic to 748kh/s.

To confirm it's the one with Elphida memory & bios 015.043.000.005.000000.

I switched from cgminer 1.7.2 to sgminer 4.1.0 to go higher then my previous post (the last post). I could also then increase the engine speed to 1080.

Using SG miner on my 2 oldler 280x I managed to push one to 760kh/s but the other is still on 750kh/s.

Panic over I think.

[MTJ151]

I'm now getting a problem where the hash is going down dramatically once the screen goes off and does not seem to come back up once the monitor is switched back on.

[TheMusketeer]

Hi everyone. First time poster here and I would like to share some info and ask for advice. I bought 4 280x TOXICs a week ago with  015.043 BIOS.Here is my setup and results:
WIN 8.1 64-bit Catalyst 13.12 + 2.9 SDK
cgminer 3.7.4 and sgminer 4.1.0 config:
"intensity" : "13",
"worksize" : "256",
"lookup-gap" : "2",
"thread-concurrency" : "8193", (8192 for some kernels)
"gpu-threads" : "2",

On 1050core/1500mem clock I get 736-740kh/s with all of the new kernels in the sgminer dir.
On 1080/1500 600-650kh/s.
On 1060/1800 ~750kh/s.
On 1150/1800 ~550kh/s.
MTJ151 can you tell what is the difference between our two setups?
I understand now that is will most likely not be possible to get 800+kh/s form these cards so my goal now is to find a stable 750-760kh/s. with decent power consumption and temps.

[MTJ151]

I get just over 750 kh/s with mine at 1075/1500 with following config file:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
del *.bin
sgminer.exe --gpu-vddc=1.2 -g 2 -w 256 -I 13 --thread-concurrency=8193 --gpu-engine=1075 --gpu-memclock=1500 --auto-fan --gpu-powertune=20 --shaders 2048 -o stratum+tcp://pool-eu.hash.so:1337 -u username.worker -p pass

However after about 15 mins my hashrate drops dramatically and I will start to see some artifacts on the screen. After another 10 mins it actually seems to pick back up to 750kh/s (recovers?) and then has run the whole night at that speed.

I think the whole crashing and recovering thing is down to either drivers or possibly because I have a slight undervolt. I will me messing around with it more today to see if I can work out what's going on.

[MTJ151]

Oh.... I have not even installed the SDK yet.... will have to try that too.

[TheMusketeer]

Some update here:
1060core/1800mem ~750kh/s (If I set the core @65 the card drops to ~650kh/s)
1075/1820 ~760kh/s
@MTJ151 We need to find a modded BIOS with tighter VRAM timings.Search for "Stilt BIOS"
The hardware of the cards is capable of +800kh/s but not with these timings.

[MTJ151]

Some update here:
1060core/1800mem ~750kh/s (If I set the core @65 the card drops to ~650kh/s)
1075/1820 ~760kh/s
@MTJ151 We need to find a modded BIOS with tighter VRAM timings.Search for "Stilt BIOS"
The hardware of the cards is capable of +800kh/s but not with these timings.

I saw the Stilt stuff. I was fairly happy with 750 to be honest! I get 750 from my other 280x with the good ram.

That being said.... it would be great if we can push the cards even further!

The problem that I last posted about... getting random drops in hash power... seems to have fixed it's self now. It's like the card had to be worn in?!?!

[chrisyeap]

Some update here:
1060core/1800mem ~750kh/s (If I set the core @65 the card drops to ~650kh/s)
1075/1820 ~760kh/s
@MTJ151 We need to find a modded BIOS with tighter VRAM timings.Search for "Stilt BIOS"
The hardware of the cards is capable of +800kh/s but not with these timings.

I saw the Stilt stuff. I was fairly happy with 750 to be honest! I get 750 from my other 280x with the good ram.

That being said.... it would be great if we can push the cards even further!

The problem that I last posted about... getting random drops in hash power... seems to have fixed it's self now. It's like the card had to be worn in?!?!

Can you please post your cgminer.conf setting please? 

[chrisyeap]

mine also the latest bios 015.043.000.005.000000 just bought 3 weeks ago.  Cannot get over 600KH/s.  Just morning just play with the configuration reading you all posted configurations with BAMT 1.6 and now get 725KH/s per card.  Not sure how long going to stay this way in stable mode:

{
    "pools": [
        {
       "poolname"    : "Switcher - xx",
         "url"    : "stratum+tcp://united.wemineltc.com:3335",
       "user"   : "xxx",
       "pass"   : "xxx"
        }
    ],
    "auto-fan": true,
    "gpu-fan": "50-85",
    "temp-cutoff": "90",
    "temp-overheat": "85",

    "gpu-memclock" : "1500",
    "gpu-engine" : "1075",
    "gpu-powertune" : "0",
    "gpu-vddc" : "1.200",
    "gpu-threads" : "2",
    "intensity" : "13",
    "lookup-gap" : "2",
   
    "worksize": "256",
    "xintensity": "4",
    "thread-concurrency": "8193",
    "shaders" : "2048",

    "api-port": "4028",
    "api-listen": true,
    "api-allow": "W:127.0.0.1",

    "failover-only" : true,
    "no-pool-disable": true,
    "no-submit-stale" : true,

    "queue": "0",
    "scrypt" : true,
   
    "kernel-path": "/usr/local/bin"
}

sample capture :
stratum+tcp://united.wemineltc.com:3335
   73.0 c   99%   729 Kh/s   211 / 1   0.47%   200 Series   73% (3156)   1075 Mhz   1500 Mhz   1.2v
1   
   stratum+tcp://united.wemineltc.com:3335
   72.0 c   96%   726 Kh/s   217 / 0   0.00%   200 Series   85% (3730)   1075 Mhz   1500 Mhz   1.2v
2   
   stratum+tcp://united.wemineltc.com:3335
   73.0 c   97%   721 Kh/s   244 / 0   0.00%   200 Series   67% (2937)   1075 Mhz   1500 Mhz   1.2v

Any feedback?

Thank you all.

[MTJ151]

I would slowly increase/decrease the engine speed to see if you can get it any higher.

[MTJ151]

Also try TC 8191 or 8192 just incase that's better for your particular card.

[chrisyeap]

Also try TC 8191 or 8192 just incase that's better for your particular card.

Thank you MTJ151 

[projectdimpreza]

cant get above 739 khash with the above settings you posted.. using 4 280x hynix and 2 280x elpida toxic card.. although elpida only reach 719 khash.. any update about this?