FTC mining with R9 280x (BF 4 edition)

edited January 2014 in Feathercoin

So Im mining FTC with R9 280x (BF4 ed.)
and getting 600khash/s

GUIminer-scrypt alpha
using cgminer 3.7.2
catalyst version 13.11
Windows 8.1

TC 8192
worksize 256
vectors 1
GPU threads 2
Intentsiti 13

What windows?
What SDK?
Miner - cgminer ver.? guiminer?
Driver ver?


  • edited January 2014

    What graphic card are you using (model)?

    1) Set your ram speed to 1500
    2) Set your GPU speed to 1000 then slowly increase it by 5 until it reaches above 700.

    I've Sapphire Toxic R9 280x and Gigabyte Windforce R9 280x
    Both running more then 730kHashes but at different settings (Toxic - 1080 GPU, Windforce - 1050).

    Note that the above 2 cards are higher speced (factory overclocked) then the normal range of R9 280 so you might want to start at 1000 then work upwards (or downwards) depending on the type of GPU you use.

    Note2: Sapphire Toxic R9 280x defaults to 1600 ram speed so you need to add into cgminer to lower it to 1500.

  • Thanks for the response!

    3x GV-R928XOC-3GD
    GPU at 1100 MEM at 1500

    if I set TC to 2048, I get 710-730kHash but no shares.

    This card is fine, getting 700-710kHash and shares.

    cg miner is a bit hard to me, allways used guiminer scrypt.
    The system is running for 2 users, me and my brother......and the gui is simple to use.

  • I'm running three R9 280X from Shapphire (OC BF4 Edition) at 720 kHash with:

    GPU: 1050Mhz MEM: 1500Mhz

    TC 8192
    worksize 256
    GPU threads 2
    Intentsity 13

    Using Windows 7 x64 and cgminer 3.7.2

    Maybe it's just a GUIMiner issue ? 
  • i would recommend avoiding guiminer sa much as possible as it is very difficult to troubleshoot and control.  the benefit of the guiminer is to reviev the "console" window what settings were used when setting up the system and then just copy/paste them into a .bat file.

    The problems that I had and could not see with guiminer were:
    - HW errors (due to lack of ram in the pc)
    - REJECTS (due to a to high intensity)

    Im running 3x Sapphice Dual 280x with 705kh at default core clock and mem clock.
  • Mining ftc with 2 - R9 290x Win Home 7 64 bit. cgminer 3.0.1

    Overclocked yesterday, +15% for power and clock speed, ran at 95C for a number of hours. Obtained kH/s of 780+
    Used these parameters loading cgminer
    cgminer --scrypt -o ftc.give-me-coins.com:3336 -O user.miner:pass --thread-concurrency 8192 -w 256 -I 18

    I shut the system down completely for about 4 hours last night. Ran cgminer again overnight Used defaults -- no overclocking. 8 hours. It ran very slowly in comparison to the previous performance. 

    Today, shut down to try to troubleshoot. Unable to run cgminer using  --thread-concurrency 8192 -w 256 -I 18 Error message about thread 0, killing thread 0. Card driver stops and then restarts.

    Can anybody help?

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